./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe006_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe006_pso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 9a0b11f92f532492d7d2cba0513d63f9ff116a54 .............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:28:34,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:28:34,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:28:34,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:28:34,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:28:34,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:28:34,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:28:34,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:28:34,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:28:34,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:28:34,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:28:34,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:28:34,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:28:34,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:28:34,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:28:34,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:28:34,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:28:34,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:28:34,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:28:34,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:28:34,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:28:34,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:28:34,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:28:34,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:28:34,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:28:34,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:28:34,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:28:34,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:28:34,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:28:34,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:28:34,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:28:34,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:28:34,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:28:34,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:28:34,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:28:34,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:28:34,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:28:34,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:28:34,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:28:34,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:28:34,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:28:34,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:28:34,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:28:34,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:28:34,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:28:34,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:28:34,691 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:28:34,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:28:34,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:28:34,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:28:34,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:28:34,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:28:34,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:28:34,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:28:34,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:28:34,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:28:34,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:28:34,694 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:28:34,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:28:34,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:28:34,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:28:34,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:28:34,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:28:34,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:28:34,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:28:34,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:28:34,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:28:34,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:28:34,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:28:34,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:28:34,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:28:34,699 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a0b11f92f532492d7d2cba0513d63f9ff116a54 [2020-10-26 00:28:35,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:28:35,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:28:35,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:28:35,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:28:35,138 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:28:35,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe006_pso.oepc.i [2020-10-26 00:28:35,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544143def/6237ae2b2510498785da9413332ef769/FLAGd4f0dbac7 [2020-10-26 00:28:35,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:28:35,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe006_pso.oepc.i [2020-10-26 00:28:35,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544143def/6237ae2b2510498785da9413332ef769/FLAGd4f0dbac7 [2020-10-26 00:28:36,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544143def/6237ae2b2510498785da9413332ef769 [2020-10-26 00:28:36,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:28:36,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:28:36,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:28:36,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:28:36,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:28:36,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0dbe8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36, skipping insertion in model container [2020-10-26 00:28:36,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:28:36,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:28:36,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:28:36,714 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:28:36,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:28:36,886 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:28:36,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36 WrapperNode [2020-10-26 00:28:36,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:28:36,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:28:36,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:28:36,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:28:36,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:28:36,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:28:36,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:28:36,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:28:36,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... [2020-10-26 00:28:36,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:28:36,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:28:36,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:28:36,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:28:36,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 00:28:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:28:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:28:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:28:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:28:37,054 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:28:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:28:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:28:37,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:28:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:28:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:28:37,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:28:37,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:28:37,057 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:28:37,427 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:28:37,428 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:28:37,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:28:37 BoogieIcfgContainer [2020-10-26 00:28:37,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:28:37,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:28:37,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:28:37,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:28:37,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:28:36" (1/3) ... [2020-10-26 00:28:37,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521c701a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:28:37, skipping insertion in model container [2020-10-26 00:28:37,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:28:36" (2/3) ... [2020-10-26 00:28:37,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521c701a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:28:37, skipping insertion in model container [2020-10-26 00:28:37,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:28:37" (3/3) ... [2020-10-26 00:28:37,440 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc.i [2020-10-26 00:28:37,452 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:28:37,453 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:28:37,457 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:28:37,458 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:28:37,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,492 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,492 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,497 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,505 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,505 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,505 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,515 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,516 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,516 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,516 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:28:37,526 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:28:37,541 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-26 00:28:37,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:28:37,580 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:28:37,580 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:28:37,580 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:28:37,580 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:28:37,581 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:28:37,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:28:37,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:28:37,601 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:28:37,603 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-26 00:28:37,607 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-26 00:28:37,610 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-10-26 00:28:37,698 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-10-26 00:28:37,699 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:28:37,703 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. [2020-10-26 00:28:37,708 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-26 00:28:38,985 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-26 00:28:39,349 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-26 00:28:39,453 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 00:28:39,483 INFO L131 LiptonReduction]: Checked pairs total: 1892 [2020-10-26 00:28:39,483 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-10-26 00:28:39,489 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-10-26 00:28:39,502 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-10-26 00:28:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-26 00:28:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 00:28:39,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:28:39,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 00:28:39,512 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:28:39,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:28:39,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-10-26 00:28:39,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:28:39,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463063702] [2020-10-26 00:28:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:28:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:28:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:28:39,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463063702] [2020-10-26 00:28:39,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:28:39,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:28:39,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374138532] [2020-10-26 00:28:39,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:28:39,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:28:39,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:28:39,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:28:39,728 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-26 00:28:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:28:39,754 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-10-26 00:28:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:28:39,756 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-26 00:28:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:28:39,768 INFO L225 Difference]: With dead ends: 90 [2020-10-26 00:28:39,769 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 00:28:39,770 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 [2020-10-26 00:28:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 00:28:39,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-26 00:28:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-26 00:28:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-10-26 00:28:39,829 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-10-26 00:28:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:28:39,831 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-10-26 00:28:39,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:28:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-10-26 00:28:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-26 00:28:39,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:28:39,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:28:39,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:28:39,834 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:28:39,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:28:39,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-10-26 00:28:39,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:28:39,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826597758] [2020-10-26 00:28:39,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:28:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:28:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:28:40,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826597758] [2020-10-26 00:28:40,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:28:40,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:28:40,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139885563] [2020-10-26 00:28:40,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:28:40,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:28:40,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:28:40,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:28:40,012 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-10-26 00:28:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:28:40,048 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-10-26 00:28:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:28:40,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-26 00:28:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:28:40,051 INFO L225 Difference]: With dead ends: 82 [2020-10-26 00:28:40,051 INFO L226 Difference]: Without dead ends: 66 [2020-10-26 00:28:40,052 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 [2020-10-26 00:28:40,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-26 00:28:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-26 00:28:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-26 00:28:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-10-26 00:28:40,062 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-10-26 00:28:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:28:40,062 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-10-26 00:28:40,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:28:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-10-26 00:28:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:28:40,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:28:40,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:28:40,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:28:40,064 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:28:40,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:28:40,065 INFO L82 PathProgramCache]: Analyzing trace with hash 722349434, now seen corresponding path program 1 times [2020-10-26 00:28:40,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:28:40,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620935269] [2020-10-26 00:28:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:28:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:28:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:28:40,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620935269] [2020-10-26 00:28:40,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:28:40,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:28:40,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922748944] [2020-10-26 00:28:40,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:28:40,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:28:40,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:28:40,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:28:40,155 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 5 states. [2020-10-26 00:28:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:28:40,221 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2020-10-26 00:28:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:28:40,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-26 00:28:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:28:40,223 INFO L225 Difference]: With dead ends: 78 [2020-10-26 00:28:40,223 INFO L226 Difference]: Without dead ends: 42 [2020-10-26 00:28:40,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:28:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-26 00:28:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-26 00:28:40,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 00:28:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-10-26 00:28:40,234 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 8 [2020-10-26 00:28:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:28:40,235 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-10-26 00:28:40,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:28:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-10-26 00:28:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:28:40,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:28:40,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:28:40,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:28:40,237 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:28:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:28:40,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-10-26 00:28:40,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:28:40,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81181817] [2020-10-26 00:28:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:28:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:28:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:28:40,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81181817] [2020-10-26 00:28:40,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:28:40,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:28:40,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636009519] [2020-10-26 00:28:40,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:28:40,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:28:40,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:28:40,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:28:40,386 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 6 states. [2020-10-26 00:28:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:28:40,482 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-10-26 00:28:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 00:28:40,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 00:28:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:28:40,483 INFO L225 Difference]: With dead ends: 36 [2020-10-26 00:28:40,483 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:28:40,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:28:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:28:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:28:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:28:40,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:28:40,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-26 00:28:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:28:40,484 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:28:40,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:28:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:28:40,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:28:40,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:28:40,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:28:40 BasicIcfg [2020-10-26 00:28:40,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:28:40,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:28:40,490 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:28:40,490 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:28:40,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:28:37" (3/4) ... [2020-10-26 00:28:40,494 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:28:40,501 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:28:40,501 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:28:40,506 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-26 00:28:40,507 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:28:40,507 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:28:40,516 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:28:40,560 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:28:40,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:28:40,563 INFO L168 Benchmark]: Toolchain (without parser) took 4421.26 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 23.6 MB in the beginning and 65.8 MB in the end (delta: -42.2 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:28:40,565 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 29.5 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:28:40,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.99 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 41.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-10-26 00:28:40,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.38 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 39.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:28:40,569 INFO L168 Benchmark]: Boogie Preprocessor took 29.41 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 37.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:28:40,571 INFO L168 Benchmark]: RCFGBuilder took 456.79 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 35.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:28:40,572 INFO L168 Benchmark]: TraceAbstraction took 3057.11 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 34.7 MB in the beginning and 20.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-10-26 00:28:40,574 INFO L168 Benchmark]: Witness Printer took 71.13 ms. Allocated memory is still 86.0 MB. Free memory was 20.7 MB in the beginning and 65.8 MB in the end (delta: -45.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:28:40,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 29.5 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 736.99 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 41.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.38 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 39.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.41 ms. Allocated memory is still 58.7 MB. Free memory was 39.2 MB in the beginning and 37.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 456.79 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 35.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3057.11 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 34.7 MB in the beginning and 20.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Witness Printer took 71.13 ms. Allocated memory is still 86.0 MB. Free memory was 20.7 MB in the beginning and 65.8 MB in the end (delta: -45.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 543 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 43 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 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: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 56 SDtfs, 67 SDslu, 66 SDs, 0 SdLazy, 44 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s 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, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 916 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...