./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 090e2f89585266bac89c2a7b2fff416255c8b847 ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:10:10,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:10:10,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:10:10,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:10:10,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:10:10,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:10:10,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:10:10,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:10:10,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:10:10,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:10:10,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:10:10,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:10:10,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:10:10,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:10:10,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:10:10,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:10:10,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:10:10,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:10:10,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:10:10,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:10:10,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:10:10,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:10:10,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:10:10,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:10:10,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:10:10,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:10:10,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:10:10,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:10:10,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:10:10,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:10:10,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:10:10,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:10:10,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:10:10,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:10:10,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:10:10,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:10:10,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:10:10,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:10:10,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:10:10,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:10:10,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:10:10,607 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:10:10,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:10:10,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:10:10,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:10:10,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:10:10,638 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:10:10,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:10:10,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:10:10,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:10:10,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:10:10,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:10:10,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:10:10,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:10:10,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:10:10,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:10:10,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:10:10,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:10:10,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:10:10,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:10:10,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:10:10,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:10:10,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:10:10,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:10,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:10:10,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:10:10,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:10:10,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:10:10,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:10:10,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:10:10,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:10:10,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 090e2f89585266bac89c2a7b2fff416255c8b847 [2020-11-28 03:10:10,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:10:10,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:10:10,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:10:10,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:10:10,964 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:10:10,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i [2020-11-28 03:10:11,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/data/3447814d1/6438af3c71004165b06c6f24014f8119/FLAG3966f583d [2020-11-28 03:10:11,742 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:10:11,743 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/sv-benchmarks/c/pthread-wmm/safe006_tso.oepc.i [2020-11-28 03:10:11,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/data/3447814d1/6438af3c71004165b06c6f24014f8119/FLAG3966f583d [2020-11-28 03:10:12,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/data/3447814d1/6438af3c71004165b06c6f24014f8119 [2020-11-28 03:10:12,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:10:12,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:10:12,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:12,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:10:12,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:10:12,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406c9dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12, skipping insertion in model container [2020-11-28 03:10:12,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:10:12,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:10:12,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:12,696 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:10:12,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:10:12,838 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:10:12,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12 WrapperNode [2020-11-28 03:10:12,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:10:12,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:10:12,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:10:12,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:10:12,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:10:12,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:10:12,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:10:12,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:10:12,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... [2020-11-28 03:10:12,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:10:12,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:10:12,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:10:12,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:10:12,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:10:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:10:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:10:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:10:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:10:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:10:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:10:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:10:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:10:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:10:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:10:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:10:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:10:13,016 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:10:13,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:10:13,624 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:10:13,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:13 BoogieIcfgContainer [2020-11-28 03:10:13,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:10:13,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:10:13,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:10:13,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:10:13,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:10:12" (1/3) ... [2020-11-28 03:10:13,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633c626f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:13, skipping insertion in model container [2020-11-28 03:10:13,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:10:12" (2/3) ... [2020-11-28 03:10:13,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633c626f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:10:13, skipping insertion in model container [2020-11-28 03:10:13,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:13" (3/3) ... [2020-11-28 03:10:13,640 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_tso.oepc.i [2020-11-28 03:10:13,653 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:10:13,654 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:10:13,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:10:13,660 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:10:13,701 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,701 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,701 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,702 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,703 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,703 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,704 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,705 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,711 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,721 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,721 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,722 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,722 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:10:13,731 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:10:13,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:10:13,798 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:10:13,798 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:10:13,799 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:10:13,799 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:10:13,799 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:10:13,799 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:10:13,800 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:10:13,801 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:10:13,818 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:10:13,821 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-28 03:10:13,825 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-28 03:10:13,827 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-11-28 03:10:13,909 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-11-28 03:10:13,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:10:13,915 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-28 03:10:13,922 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-28 03:10:16,623 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-11-28 03:10:17,128 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-28 03:10:17,317 INFO L131 LiptonReduction]: Checked pairs total: 1892 [2020-11-28 03:10:17,317 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-28 03:10:17,325 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-11-28 03:10:17,348 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-11-28 03:10:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-28 03:10:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:10:17,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:17,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:10:17,357 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:17,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:17,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-11-28 03:10:17,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:17,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029789771] [2020-11-28 03:10:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:17,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029789771] [2020-11-28 03:10:17,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:17,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:10:17,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115381342] [2020-11-28 03:10:17,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:10:17,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:17,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:10:17,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:10:17,680 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-28 03:10:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:17,700 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-11-28 03:10:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:10:17,701 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 03:10:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:17,710 INFO L225 Difference]: With dead ends: 90 [2020-11-28 03:10:17,711 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:10:17,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:10:17,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:10:17,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 03:10:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:10:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-11-28 03:10:17,783 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-11-28 03:10:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:17,784 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-11-28 03:10:17,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:10:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-11-28 03:10:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:10:17,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:17,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:17,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:10:17,787 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:17,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-11-28 03:10:17,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:17,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763196934] [2020-11-28 03:10:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:18,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763196934] [2020-11-28 03:10:18,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:18,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:10:18,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541618774] [2020-11-28 03:10:18,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:10:18,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:18,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:10:18,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:10:18,031 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-11-28 03:10:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:18,084 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-11-28 03:10:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:10:18,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:10:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:18,090 INFO L225 Difference]: With dead ends: 82 [2020-11-28 03:10:18,091 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 03:10:18,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:10:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 03:10:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-28 03:10:18,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 03:10:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-11-28 03:10:18,111 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-11-28 03:10:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:18,112 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-11-28 03:10:18,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:10:18,112 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-11-28 03:10:18,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:10:18,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:18,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:18,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:10:18,114 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:18,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:18,114 INFO L82 PathProgramCache]: Analyzing trace with hash 722349434, now seen corresponding path program 1 times [2020-11-28 03:10:18,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:18,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110537136] [2020-11-28 03:10:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:18,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110537136] [2020-11-28 03:10:18,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:18,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:18,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937969206] [2020-11-28 03:10:18,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:10:18,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:10:18,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:10:18,283 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 6 states. [2020-11-28 03:10:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:18,460 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2020-11-28 03:10:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:10:18,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-28 03:10:18,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:18,467 INFO L225 Difference]: With dead ends: 78 [2020-11-28 03:10:18,467 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 03:10:18,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:10:18,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 03:10:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 03:10:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 03:10:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-11-28 03:10:18,475 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 8 [2020-11-28 03:10:18,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:18,475 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-11-28 03:10:18,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:10:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-11-28 03:10:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:10:18,477 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:10:18,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:10:18,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:10:18,478 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:10:18,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:10:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-11-28 03:10:18,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:10:18,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970131266] [2020-11-28 03:10:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:10:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:10:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:10:18,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970131266] [2020-11-28 03:10:18,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:10:18,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:10:18,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093205439] [2020-11-28 03:10:18,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:10:18,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:10:18,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:10:18,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:10:18,592 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 6 states. [2020-11-28 03:10:18,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:10:18,752 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-11-28 03:10:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:10:18,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:10:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:10:18,753 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:10:18,753 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:10:18,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:10:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:10:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:10:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:10:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:10:18,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 03:10:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:10:18,755 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:10:18,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:10:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:10:18,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:10:18,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:10:18,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:10:18 BasicIcfg [2020-11-28 03:10:18,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:10:18,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:10:18,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:10:18,763 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:10:18,763 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:10:13" (3/4) ... [2020-11-28 03:10:18,767 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:10:18,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:10:18,777 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:10:18,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 03:10:18,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:10:18,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:18,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:10:18,853 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_764a4088-b365-42b6-b3dc-fac98cfdca91/bin/uautomizer/witness.graphml [2020-11-28 03:10:18,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:10:18,857 INFO L168 Benchmark]: Toolchain (without parser) took 6844.56 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 99.0 MB in the beginning and 114.0 MB in the end (delta: -14.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:18,858 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:18,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 823.81 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 84.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:18,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.64 ms. Allocated memory is still 127.9 MB. Free memory was 84.3 MB in the beginning and 82.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:18,861 INFO L168 Benchmark]: Boogie Preprocessor took 31.86 ms. Allocated memory is still 127.9 MB. Free memory was 82.7 MB in the beginning and 81.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:18,864 INFO L168 Benchmark]: RCFGBuilder took 699.61 ms. Allocated memory is still 127.9 MB. Free memory was 81.3 MB in the beginning and 61.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:18,865 INFO L168 Benchmark]: TraceAbstraction took 5129.87 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 60.8 MB in the beginning and 116.1 MB in the end (delta: -55.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:10:18,865 INFO L168 Benchmark]: Witness Printer took 90.70 ms. Allocated memory is still 155.2 MB. Free memory was 116.1 MB in the beginning and 114.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:10:18,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 823.81 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 84.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.64 ms. Allocated memory is still 127.9 MB. Free memory was 84.3 MB in the beginning and 82.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.86 ms. Allocated memory is still 127.9 MB. Free memory was 82.7 MB in the beginning and 81.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 699.61 ms. Allocated memory is still 127.9 MB. Free memory was 81.3 MB in the beginning and 61.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5129.87 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 60.8 MB in the beginning and 116.1 MB in the end (delta: -55.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 90.70 ms. Allocated memory is still 155.2 MB. Free memory was 116.1 MB in the beginning and 114.0 MB in the end (delta: 2.1 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 543 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 43 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 1892 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 51 SDtfs, 76 SDslu, 69 SDs, 0 SdLazy, 65 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1063 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 correct! Received shutdown request...