./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/lazy01.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_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/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 4de3a2ca09971f3eb45edfe4b976415f8e15d63f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:06:52,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:06:52,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:06:52,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:06:52,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:06:52,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:06:52,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:06:52,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:06:52,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:06:52,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:06:52,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:06:52,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:06:52,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:06:52,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:06:52,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:06:52,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:06:52,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:06:52,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:06:52,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:06:52,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:06:52,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:06:52,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:06:52,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:06:52,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:06:52,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:06:52,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:06:52,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:06:52,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:06:52,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:06:52,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:06:52,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:06:52,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:06:52,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:06:52,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:06:52,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:06:52,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:06:52,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:06:52,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:06:52,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:06:52,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:06:52,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:06:52,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:06:52,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:06:52,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:06:52,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:06:52,682 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:06:52,682 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:06:52,682 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:06:52,682 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:06:52,683 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:06:52,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:06:52,683 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:06:52,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:06:52,683 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:06:52,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:06:52,683 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:06:52,683 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:06:52,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:06:52,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:06:52,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:06:52,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:06:52,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:06:52,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:06:52,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:06:52,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:06:52,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:06:52,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:06:52,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:06:52,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:06:52,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:06:52,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:06:52,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:06:52,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:06:52,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:06:52,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:06:52,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:06:52,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:06:52,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:06:52,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:06:52,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:06:52,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:06:52,686 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_708afc3c-ecad-49c2-9c3f-3ed386769781/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de3a2ca09971f3eb45edfe4b976415f8e15d63f [2020-12-09 07:06:52,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:06:52,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:06:52,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:06:52,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:06:52,885 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:06:52,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/../../sv-benchmarks/c/pthread/lazy01.i [2020-12-09 07:06:52,927 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/data/52fb1c7a2/300df5efb2854f93a7c1effe502239c7/FLAGefb5b04a2 [2020-12-09 07:06:53,359 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:06:53,359 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/sv-benchmarks/c/pthread/lazy01.i [2020-12-09 07:06:53,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/data/52fb1c7a2/300df5efb2854f93a7c1effe502239c7/FLAGefb5b04a2 [2020-12-09 07:06:53,380 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/data/52fb1c7a2/300df5efb2854f93a7c1effe502239c7 [2020-12-09 07:06:53,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:06:53,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:06:53,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:06:53,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:06:53,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:06:53,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69166d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53, skipping insertion in model container [2020-12-09 07:06:53,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:06:53,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:06:53,626 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_708afc3c-ecad-49c2-9c3f-3ed386769781/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2020-12-09 07:06:53,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:06:53,639 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:06:53,666 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_708afc3c-ecad-49c2-9c3f-3ed386769781/sv-benchmarks/c/pthread/lazy01.i[31042,31055] [2020-12-09 07:06:53,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:06:53,718 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:06:53,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53 WrapperNode [2020-12-09 07:06:53,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:06:53,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:06:53,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:06:53,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:06:53,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:06:53,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:06:53,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:06:53,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:06:53,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... [2020-12-09 07:06:53,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:06:53,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:06:53,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:06:53,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:06:53,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/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 07:06:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 07:06:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-12-09 07:06:53,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-12-09 07:06:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-12-09 07:06:53,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-12-09 07:06:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-12-09 07:06:53,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-12-09 07:06:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 07:06:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-12-09 07:06:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:06:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 07:06:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:06:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:06:53,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:06:53,822 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 07:06:54,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:06:54,069 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 07:06:54,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:06:54 BoogieIcfgContainer [2020-12-09 07:06:54,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:06:54,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:06:54,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:06:54,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:06:54,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:06:53" (1/3) ... [2020-12-09 07:06:54,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5428cf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:06:54, skipping insertion in model container [2020-12-09 07:06:54,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:53" (2/3) ... [2020-12-09 07:06:54,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5428cf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:06:54, skipping insertion in model container [2020-12-09 07:06:54,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:06:54" (3/3) ... [2020-12-09 07:06:54,076 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2020-12-09 07:06:54,085 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 07:06:54,085 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:06:54,087 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 07:06:54,088 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 07:06:54,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,109 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,109 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,110 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,110 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,112 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,112 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,112 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,112 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,113 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,113 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,113 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,114 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,114 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,114 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,115 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,115 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,115 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,115 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,115 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,115 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,115 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,115 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,116 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,118 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,118 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,123 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,123 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,123 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,123 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,123 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,126 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,126 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,126 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,126 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,126 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 07:06:54,137 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2020-12-09 07:06:54,146 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-09 07:06:54,163 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:06:54,163 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:06:54,163 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:06:54,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:06:54,163 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:06:54,163 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:06:54,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:06:54,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:06:54,174 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 07:06:54,176 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 83 transitions, 208 flow [2020-12-09 07:06:54,178 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 83 transitions, 208 flow [2020-12-09 07:06:54,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 208 flow [2020-12-09 07:06:54,223 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2020-12-09 07:06:54,223 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-12-09 07:06:54,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 91 events. 6/91 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2020-12-09 07:06:54,230 INFO L116 LiptonReduction]: Number of co-enabled transitions 1168 [2020-12-09 07:06:56,467 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111 [2020-12-09 07:06:56,658 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-09 07:06:57,116 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111 [2020-12-09 07:06:57,296 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-12-09 07:06:57,301 INFO L131 LiptonReduction]: Checked pairs total: 4518 [2020-12-09 07:06:57,302 INFO L133 LiptonReduction]: Total number of compositions: 51 [2020-12-09 07:06:57,305 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 37 transitions, 116 flow [2020-12-09 07:06:57,327 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 492 states. [2020-12-09 07:06:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states. [2020-12-09 07:06:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:06:57,333 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:57,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:06:57,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:57,337 INFO L82 PathProgramCache]: Analyzing trace with hash 498075008, now seen corresponding path program 1 times [2020-12-09 07:06:57,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:57,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61413134] [2020-12-09 07:06:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:57,470 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 07:06:57,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61413134] [2020-12-09 07:06:57,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:06:57,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 07:06:57,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302798517] [2020-12-09 07:06:57,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:06:57,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:57,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:06:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:06:57,484 INFO L87 Difference]: Start difference. First operand 492 states. Second operand 3 states. [2020-12-09 07:06:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:57,517 INFO L93 Difference]: Finished difference Result 480 states and 1245 transitions. [2020-12-09 07:06:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:06:57,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 07:06:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:57,527 INFO L225 Difference]: With dead ends: 480 [2020-12-09 07:06:57,527 INFO L226 Difference]: Without dead ends: 250 [2020-12-09 07:06:57,528 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 07:06:57,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-09 07:06:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-12-09 07:06:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-12-09 07:06:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 622 transitions. [2020-12-09 07:06:57,567 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 622 transitions. Word has length 8 [2020-12-09 07:06:57,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:57,568 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 622 transitions. [2020-12-09 07:06:57,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:06:57,568 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 622 transitions. [2020-12-09 07:06:57,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:06:57,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:57,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:06:57,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:06:57,570 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1946340514, now seen corresponding path program 1 times [2020-12-09 07:06:57,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:57,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528315451] [2020-12-09 07:06:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:57,618 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 07:06:57,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528315451] [2020-12-09 07:06:57,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:06:57,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:06:57,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354663145] [2020-12-09 07:06:57,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:06:57,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:57,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:06:57,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:06:57,620 INFO L87 Difference]: Start difference. First operand 250 states and 622 transitions. Second operand 3 states. [2020-12-09 07:06:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:57,636 INFO L93 Difference]: Finished difference Result 142 states and 253 transitions. [2020-12-09 07:06:57,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:06:57,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 07:06:57,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:57,638 INFO L225 Difference]: With dead ends: 142 [2020-12-09 07:06:57,638 INFO L226 Difference]: Without dead ends: 140 [2020-12-09 07:06:57,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:06:57,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-09 07:06:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-12-09 07:06:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-09 07:06:57,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 250 transitions. [2020-12-09 07:06:57,645 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 250 transitions. Word has length 10 [2020-12-09 07:06:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:57,645 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 250 transitions. [2020-12-09 07:06:57,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:06:57,645 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 250 transitions. [2020-12-09 07:06:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 07:06:57,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:57,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:06:57,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:06:57,647 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:57,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:57,647 INFO L82 PathProgramCache]: Analyzing trace with hash -206983733, now seen corresponding path program 1 times [2020-12-09 07:06:57,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:57,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889142728] [2020-12-09 07:06:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:57,684 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 07:06:57,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889142728] [2020-12-09 07:06:57,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:06:57,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:06:57,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760915140] [2020-12-09 07:06:57,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:06:57,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:57,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:06:57,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:06:57,686 INFO L87 Difference]: Start difference. First operand 140 states and 250 transitions. Second operand 4 states. [2020-12-09 07:06:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:57,698 INFO L93 Difference]: Finished difference Result 135 states and 241 transitions. [2020-12-09 07:06:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:06:57,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 07:06:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:57,700 INFO L225 Difference]: With dead ends: 135 [2020-12-09 07:06:57,700 INFO L226 Difference]: Without dead ends: 130 [2020-12-09 07:06:57,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:06:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-09 07:06:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-12-09 07:06:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-09 07:06:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 232 transitions. [2020-12-09 07:06:57,706 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 232 transitions. Word has length 11 [2020-12-09 07:06:57,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:57,706 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 232 transitions. [2020-12-09 07:06:57,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:06:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 232 transitions. [2020-12-09 07:06:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 07:06:57,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:57,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:06:57,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:06:57,708 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:57,708 INFO L82 PathProgramCache]: Analyzing trace with hash 225996396, now seen corresponding path program 1 times [2020-12-09 07:06:57,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:57,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48282425] [2020-12-09 07:06:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:57,760 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 07:06:57,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48282425] [2020-12-09 07:06:57,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:06:57,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:06:57,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609428224] [2020-12-09 07:06:57,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:06:57,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:57,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:06:57,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:06:57,763 INFO L87 Difference]: Start difference. First operand 130 states and 232 transitions. Second operand 5 states. [2020-12-09 07:06:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:57,783 INFO L93 Difference]: Finished difference Result 125 states and 223 transitions. [2020-12-09 07:06:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:06:57,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 07:06:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:57,785 INFO L225 Difference]: With dead ends: 125 [2020-12-09 07:06:57,785 INFO L226 Difference]: Without dead ends: 120 [2020-12-09 07:06:57,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:06:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-09 07:06:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-12-09 07:06:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-09 07:06:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 214 transitions. [2020-12-09 07:06:57,792 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 214 transitions. Word has length 12 [2020-12-09 07:06:57,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:57,792 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 214 transitions. [2020-12-09 07:06:57,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:06:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 214 transitions. [2020-12-09 07:06:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 07:06:57,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:57,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:06:57,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:06:57,793 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:57,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:57,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1097626273, now seen corresponding path program 1 times [2020-12-09 07:06:57,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:57,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418560328] [2020-12-09 07:06:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:06:57,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:06:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:06:57,839 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:06:57,857 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:06:57,857 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:06:57,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 07:06:57,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:06:57 BasicIcfg [2020-12-09 07:06:57,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:06:57,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:06:57,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:06:57,882 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:06:57,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:06:54" (3/4) ... [2020-12-09 07:06:57,884 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:06:57,918 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_708afc3c-ecad-49c2-9c3f-3ed386769781/bin/utaipan/witness.graphml [2020-12-09 07:06:57,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:06:57,919 INFO L168 Benchmark]: Toolchain (without parser) took 4536.02 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 75.9 MB in the beginning and 114.5 MB in the end (delta: -38.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:57,920 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 113.2 MB. Free memory is still 93.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:06:57,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.30 ms. Allocated memory is still 113.2 MB. Free memory was 75.7 MB in the beginning and 71.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:57,921 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.53 ms. Allocated memory is still 113.2 MB. Free memory was 70.6 MB in the beginning and 69.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:57,921 INFO L168 Benchmark]: Boogie Preprocessor took 17.49 ms. Allocated memory is still 113.2 MB. Free memory was 69.0 MB in the beginning and 67.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:57,922 INFO L168 Benchmark]: RCFGBuilder took 304.23 ms. Allocated memory is still 113.2 MB. Free memory was 67.4 MB in the beginning and 90.7 MB in the end (delta: -23.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:57,922 INFO L168 Benchmark]: TraceAbstraction took 3810.82 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 90.0 MB in the beginning and 118.7 MB in the end (delta: -28.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:57,923 INFO L168 Benchmark]: Witness Printer took 36.28 ms. Allocated memory is still 163.6 MB. Free memory was 118.7 MB in the beginning and 114.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:57,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 113.2 MB. Free memory is still 93.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.30 ms. Allocated memory is still 113.2 MB. Free memory was 75.7 MB in the beginning and 71.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.53 ms. Allocated memory is still 113.2 MB. Free memory was 70.6 MB in the beginning and 69.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.49 ms. Allocated memory is still 113.2 MB. Free memory was 69.0 MB in the beginning and 67.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 304.23 ms. Allocated memory is still 113.2 MB. Free memory was 67.4 MB in the beginning and 90.7 MB in the end (delta: -23.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3810.82 ms. Allocated memory was 113.2 MB in the beginning and 163.6 MB in the end (delta: 50.3 MB). Free memory was 90.0 MB in the beginning and 118.7 MB in the end (delta: -28.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * Witness Printer took 36.28 ms. Allocated memory is still 163.6 MB. Free memory was 118.7 MB in the beginning and 114.5 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 823 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 16 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 207 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 86 PlacesBefore, 40 PlacesAfterwards, 83 TransitionsBefore, 37 TransitionsAfterwards, 1168 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 51 TotalNumberOfCompositions, 4518 MoverChecksTotal - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={10:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, data=1, mutex={10:0}] [L709] 1 return 0; [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={10:0}] [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={10:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={10:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 117 SDtfs, 57 SDslu, 135 SDs, 0 SdLazy, 37 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=492occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...