./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/16_peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-ext/16_peterson.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe2a87bf03514f77a2923708fa633129c30ac7f0 ...................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:58:00,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:58:00,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:58:00,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:58:00,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:58:01,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:58:01,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:58:01,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:58:01,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:58:01,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:58:01,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:58:01,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:58:01,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:58:01,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:58:01,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:58:01,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:58:01,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:58:01,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:58:01,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:58:01,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:58:01,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:58:01,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:58:01,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:58:01,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:58:01,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:58:01,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:58:01,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:58:01,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:58:01,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:58:01,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:58:01,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:58:01,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:58:01,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:58:01,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:58:01,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:58:01,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:58:01,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:58:01,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:58:01,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:58:01,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:58:01,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:58:01,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:58:01,109 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:58:01,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:58:01,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:58:01,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:58:01,115 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:58:01,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:58:01,117 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:58:01,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:58:01,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:58:01,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:58:01,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:58:01,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:58:01,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:58:01,118 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:58:01,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:58:01,119 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:58:01,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:58:01,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:58:01,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:58:01,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:58:01,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:58:01,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:58:01,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:58:01,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:58:01,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:58:01,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:58:01,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:58:01,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:58:01,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:58:01,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> fe2a87bf03514f77a2923708fa633129c30ac7f0 [2019-11-28 17:58:01,427 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:58:01,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:58:01,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:58:01,449 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:58:01,450 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:58:01,451 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/16_peterson.i [2019-11-28 17:58:01,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63501a197/6394f7e0ca2f44ceb3ad62959d428e29/FLAG71a9a0e57 [2019-11-28 17:58:02,123 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:58:02,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/16_peterson.i [2019-11-28 17:58:02,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63501a197/6394f7e0ca2f44ceb3ad62959d428e29/FLAG71a9a0e57 [2019-11-28 17:58:02,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63501a197/6394f7e0ca2f44ceb3ad62959d428e29 [2019-11-28 17:58:02,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:58:02,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:58:02,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:58:02,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:58:02,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:58:02,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:02,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ef6a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02, skipping insertion in model container [2019-11-28 17:58:02,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:02,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:58:02,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:58:02,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:58:02,867 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:58:02,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:58:02,987 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:58:02,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02 WrapperNode [2019-11-28 17:58:02,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:58:02,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:58:02,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:58:02,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:58:02,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:58:03,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:58:03,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:58:03,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:58:03,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (1/1) ... [2019-11-28 17:58:03,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:58:03,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:58:03,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:58:03,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:58:03,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (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 [2019-11-28 17:58:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-28 17:58:03,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-28 17:58:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:58:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:58:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:58:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:58:03,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:58:03,132 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 17:58:03,483 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:58:03,484 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-28 17:58:03,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:03 BoogieIcfgContainer [2019-11-28 17:58:03,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:58:03,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:58:03,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:58:03,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:58:03,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:58:02" (1/3) ... [2019-11-28 17:58:03,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e642c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:58:03, skipping insertion in model container [2019-11-28 17:58:03,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:02" (2/3) ... [2019-11-28 17:58:03,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e642c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:58:03, skipping insertion in model container [2019-11-28 17:58:03,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:03" (3/3) ... [2019-11-28 17:58:03,495 INFO L109 eAbstractionObserver]: Analyzing ICFG 16_peterson.i [2019-11-28 17:58:03,505 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 17:58:03,506 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:58:03,513 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 17:58:03,514 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 17:58:03,539 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:03,540 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:03,540 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:03,541 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:03,542 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:03,542 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:03,562 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 17:58:03,581 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:58:03,582 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:58:03,582 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:58:03,582 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:58:03,582 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:58:03,582 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:58:03,582 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:58:03,582 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:58:03,595 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 51 transitions [2019-11-28 17:58:03,597 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2019-11-28 17:58:03,631 INFO L134 PetriNetUnfolder]: 6/50 cut-off events. [2019-11-28 17:58:03,632 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:58:03,643 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs. 3/45 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2019-11-28 17:58:03,648 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions [2019-11-28 17:58:03,675 INFO L134 PetriNetUnfolder]: 6/50 cut-off events. [2019-11-28 17:58:03,675 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:58:03,677 INFO L76 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 6/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs. 3/45 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2019-11-28 17:58:03,679 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2019-11-28 17:58:03,680 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 17:58:04,607 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1164 [2019-11-28 17:58:04,607 INFO L214 etLargeBlockEncoding]: Total number of compositions: 34 [2019-11-28 17:58:04,611 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 23 transitions [2019-11-28 17:58:04,626 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2019-11-28 17:58:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2019-11-28 17:58:04,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 17:58:04,636 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:04,637 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 17:58:04,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:04,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1914205477, now seen corresponding path program 1 times [2019-11-28 17:58:04,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:04,656 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113290090] [2019-11-28 17:58:04,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:04,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113290090] [2019-11-28 17:58:04,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:04,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:04,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011585950] [2019-11-28 17:58:04,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 17:58:04,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:04,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 17:58:04,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 17:58:04,863 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2019-11-28 17:58:04,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:04,887 INFO L93 Difference]: Finished difference Result 74 states and 146 transitions. [2019-11-28 17:58:04,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 17:58:04,889 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-28 17:58:04,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:04,922 INFO L225 Difference]: With dead ends: 74 [2019-11-28 17:58:04,924 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 17:58:04,925 INFO L630 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 [2019-11-28 17:58:04,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 17:58:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-28 17:58:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-28 17:58:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 134 transitions. [2019-11-28 17:58:04,975 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 134 transitions. Word has length 6 [2019-11-28 17:58:04,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:04,976 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 134 transitions. [2019-11-28 17:58:04,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 17:58:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 134 transitions. [2019-11-28 17:58:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:58:04,977 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:04,977 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:04,978 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:04,979 INFO L82 PathProgramCache]: Analyzing trace with hash -789185163, now seen corresponding path program 1 times [2019-11-28 17:58:04,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:04,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265006933] [2019-11-28 17:58:04,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:05,059 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265006933] [2019-11-28 17:58:05,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:05,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:05,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687990168] [2019-11-28 17:58:05,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:05,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:05,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:05,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:05,062 INFO L87 Difference]: Start difference. First operand 68 states and 134 transitions. Second operand 3 states. [2019-11-28 17:58:05,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:05,092 INFO L93 Difference]: Finished difference Result 73 states and 134 transitions. [2019-11-28 17:58:05,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:05,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 17:58:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:05,095 INFO L225 Difference]: With dead ends: 73 [2019-11-28 17:58:05,095 INFO L226 Difference]: Without dead ends: 58 [2019-11-28 17:58:05,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-28 17:58:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2019-11-28 17:58:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 17:58:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 101 transitions. [2019-11-28 17:58:05,106 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 101 transitions. Word has length 7 [2019-11-28 17:58:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:05,107 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 101 transitions. [2019-11-28 17:58:05,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 101 transitions. [2019-11-28 17:58:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:58:05,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:05,108 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:05,109 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -773727376, now seen corresponding path program 1 times [2019-11-28 17:58:05,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:05,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946999220] [2019-11-28 17:58:05,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:05,155 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946999220] [2019-11-28 17:58:05,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:05,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:05,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191958031] [2019-11-28 17:58:05,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:05,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:05,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:05,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:05,158 INFO L87 Difference]: Start difference. First operand 54 states and 101 transitions. Second operand 3 states. [2019-11-28 17:58:05,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:05,185 INFO L93 Difference]: Finished difference Result 50 states and 88 transitions. [2019-11-28 17:58:05,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:05,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 17:58:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:05,186 INFO L225 Difference]: With dead ends: 50 [2019-11-28 17:58:05,186 INFO L226 Difference]: Without dead ends: 40 [2019-11-28 17:58:05,187 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-28 17:58:05,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-28 17:58:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 17:58:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 69 transitions. [2019-11-28 17:58:05,194 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 69 transitions. Word has length 7 [2019-11-28 17:58:05,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:05,195 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 69 transitions. [2019-11-28 17:58:05,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:05,195 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 69 transitions. [2019-11-28 17:58:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:58:05,196 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:05,196 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:05,196 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:05,197 INFO L82 PathProgramCache]: Analyzing trace with hash -426072120, now seen corresponding path program 1 times [2019-11-28 17:58:05,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:05,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101822194] [2019-11-28 17:58:05,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:05,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101822194] [2019-11-28 17:58:05,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:05,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 17:58:05,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739603724] [2019-11-28 17:58:05,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:58:05,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:05,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:58:05,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:58:05,278 INFO L87 Difference]: Start difference. First operand 40 states and 69 transitions. Second operand 4 states. [2019-11-28 17:58:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:05,329 INFO L93 Difference]: Finished difference Result 45 states and 78 transitions. [2019-11-28 17:58:05,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:58:05,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 17:58:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:05,332 INFO L225 Difference]: With dead ends: 45 [2019-11-28 17:58:05,333 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 17:58:05,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:58:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 17:58:05,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-28 17:58:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 17:58:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2019-11-28 17:58:05,340 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 11 [2019-11-28 17:58:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:05,342 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2019-11-28 17:58:05,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:58:05,342 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2019-11-28 17:58:05,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:58:05,343 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:05,343 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:05,344 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:05,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1603258680, now seen corresponding path program 2 times [2019-11-28 17:58:05,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:05,345 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858185602] [2019-11-28 17:58:05,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:05,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858185602] [2019-11-28 17:58:05,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:05,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 17:58:05,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984167309] [2019-11-28 17:58:05,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 17:58:05,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:05,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 17:58:05,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:58:05,427 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2019-11-28 17:58:05,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:05,444 INFO L93 Difference]: Finished difference Result 17 states and 29 transitions. [2019-11-28 17:58:05,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 17:58:05,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 17:58:05,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:05,445 INFO L225 Difference]: With dead ends: 17 [2019-11-28 17:58:05,445 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:58:05,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 17:58:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:58:05,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:58:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:58:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:58:05,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-28 17:58:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:05,447 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:58:05,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 17:58:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:58:05,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:58:05,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:58:05 BasicIcfg [2019-11-28 17:58:05,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:58:05,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:58:05,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:58:05,452 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:58:05,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:03" (3/4) ... [2019-11-28 17:58:05,456 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:58:05,463 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-28 17:58:05,467 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-11-28 17:58:05,467 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:58:05,467 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 17:58:05,510 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:58:05,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:58:05,513 INFO L168 Benchmark]: Toolchain (without parser) took 3133.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 960.4 MB in the beginning and 946.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 169.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:05,514 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:58:05,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:05,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:05,516 INFO L168 Benchmark]: Boogie Preprocessor took 25.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:05,517 INFO L168 Benchmark]: RCFGBuilder took 425.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:05,518 INFO L168 Benchmark]: TraceAbstraction took 1964.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.2 MB in the end (delta: 153.6 MB). Peak memory consumption was 153.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:05,518 INFO L168 Benchmark]: Witness Printer took 58.91 ms. Allocated memory is still 1.2 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:58:05,522 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 606.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 425.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1964.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.2 MB in the end (delta: 153.6 MB). Peak memory consumption was 153.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.91 ms. Allocated memory is still 1.2 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 49 ProgramPointsBefore, 20 ProgramPointsAfterwards, 51 TransitionsBefore, 23 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 320 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 19 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1164 CheckedPairsTotal, 34 TotalNumberOfCompositions - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 46 SDslu, 35 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...