./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.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-wmm/safe005_tso.opt.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 8ed4e776f61f45179464b0c5963a32fbca5f06af ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:03:30,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:03:30,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:03:31,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:03:31,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:03:31,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:03:31,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:03:31,053 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:03:31,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:03:31,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:03:31,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:03:31,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:03:31,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:03:31,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:03:31,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:03:31,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:03:31,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:03:31,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:03:31,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:03:31,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:03:31,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:03:31,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:03:31,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:03:31,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:03:31,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:03:31,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:03:31,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:03:31,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:03:31,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:03:31,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:03:31,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:03:31,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:03:31,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:03:31,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:03:31,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:03:31,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:03:31,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:03:31,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:03:31,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:03:31,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:03:31,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:03:31,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:03:31,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:03:31,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:03:31,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:03:31,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:03:31,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:03:31,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:03:31,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:03:31,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:03:31,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:03:31,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:03:31,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:03:31,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:03:31,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:03:31,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:03:31,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:03:31,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:03:31,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:03:31,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:03:31,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:03:31,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:03:31,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:03:31,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:03:31,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:03:31,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:03:31,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:03:31,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:03:31,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:03:31,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:03:31,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:03:31,174 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(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 -> 8ed4e776f61f45179464b0c5963a32fbca5f06af [2020-10-20 03:03:31,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:03:31,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:03:31,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:03:31,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:03:31,394 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:03:31,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i [2020-10-20 03:03:31,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cce8818fd/0674a1531b264b58871fc59eb8d18020/FLAGa8b03cb3a [2020-10-20 03:03:31,941 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:03:31,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.opt.i [2020-10-20 03:03:31,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cce8818fd/0674a1531b264b58871fc59eb8d18020/FLAGa8b03cb3a [2020-10-20 03:03:32,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cce8818fd/0674a1531b264b58871fc59eb8d18020 [2020-10-20 03:03:32,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:03:32,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:03:32,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:03:32,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:03:32,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:03:32,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22296bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:32, skipping insertion in model container [2020-10-20 03:03:32,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:03:32" (1/1) ... [2020-10-20 03:03:32,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:03:32,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:03:32,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:03:32,889 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:03:32,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:03:33,033 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:03:33,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33 WrapperNode [2020-10-20 03:03:33,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:03:33,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:03:33,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:03:33,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:03:33,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:03:33,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:03:33,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:03:33,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:03:33,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (1/1) ... [2020-10-20 03:03:33,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:03:33,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:03:33,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:03:33,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:03:33,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (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 [2020-10-20 03:03:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:03:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:03:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:03:33,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:03:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:03:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:03:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:03:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:03:33,214 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:03:33,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:03:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:03:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:03:33,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:03:33,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:03:33,217 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:03:33,587 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:03:33,587 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:03:33,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:33 BoogieIcfgContainer [2020-10-20 03:03:33,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:03:33,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:03:33,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:03:33,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:03:33,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:03:32" (1/3) ... [2020-10-20 03:03:33,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b076bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:03:33, skipping insertion in model container [2020-10-20 03:03:33,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:03:33" (2/3) ... [2020-10-20 03:03:33,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b076bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:03:33, skipping insertion in model container [2020-10-20 03:03:33,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:33" (3/3) ... [2020-10-20 03:03:33,610 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-10-20 03:03:33,623 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:03:33,624 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:03:33,632 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:03:33,633 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:03:33,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,665 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,665 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,666 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,670 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,678 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,681 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,682 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,682 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,695 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,701 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,701 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:03:33,705 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:03:33,720 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:03:33,742 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:03:33,743 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:03:33,743 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:03:33,743 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:03:33,743 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:03:33,744 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:03:33,744 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:03:33,744 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:03:33,758 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:03:33,761 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:33,763 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:33,764 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:03:33,812 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:03:33,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:03:33,818 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-20 03:03:33,821 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:03:35,853 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-20 03:03:36,078 INFO L132 LiptonReduction]: Checked pairs total: 2926 [2020-10-20 03:03:36,078 INFO L134 LiptonReduction]: Total number of compositions: 72 [2020-10-20 03:03:36,085 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-20 03:03:36,113 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-20 03:03:36,116 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-20 03:03:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:03:36,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:36,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:36,126 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:36,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-10-20 03:03:36,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:36,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576300547] [2020-10-20 03:03:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576300547] [2020-10-20 03:03:36,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 03:03:36,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423480919] [2020-10-20 03:03:36,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:03:36,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:03:36,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:03:36,394 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-20 03:03:36,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,444 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-20 03:03:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:03:36,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 03:03:36,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,466 INFO L225 Difference]: With dead ends: 266 [2020-10-20 03:03:36,466 INFO L226 Difference]: Without dead ends: 202 [2020-10-20 03:03:36,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:03:36,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-20 03:03:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-20 03:03:36,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-20 03:03:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-20 03:03:36,546 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-20 03:03:36,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,549 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-20 03:03:36,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:03:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-20 03:03:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:03:36,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:36,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:36,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:03:36,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:36,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1311186850, now seen corresponding path program 1 times [2020-10-20 03:03:36,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:36,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168872847] [2020-10-20 03:03:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168872847] [2020-10-20 03:03:36,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:03:36,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811133578] [2020-10-20 03:03:36,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:36,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:36,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:36,688 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-10-20 03:03:36,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,726 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-10-20 03:03:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:03:36,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 03:03:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,729 INFO L225 Difference]: With dead ends: 254 [2020-10-20 03:03:36,730 INFO L226 Difference]: Without dead ends: 190 [2020-10-20 03:03:36,730 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 [2020-10-20 03:03:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-20 03:03:36,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-20 03:03:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-20 03:03:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-10-20 03:03:36,748 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-10-20 03:03:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,749 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-10-20 03:03:36,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-10-20 03:03:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 03:03:36,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:36,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:36,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:03:36,752 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:36,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1456303369, now seen corresponding path program 1 times [2020-10-20 03:03:36,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:36,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544083126] [2020-10-20 03:03:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544083126] [2020-10-20 03:03:36,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:36,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813598504] [2020-10-20 03:03:36,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:36,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:36,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:36,811 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-10-20 03:03:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,841 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-10-20 03:03:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:03:36,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 03:03:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,843 INFO L225 Difference]: With dead ends: 286 [2020-10-20 03:03:36,843 INFO L226 Difference]: Without dead ends: 178 [2020-10-20 03:03:36,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-20 03:03:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-10-20 03:03:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-20 03:03:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-10-20 03:03:36,857 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-10-20 03:03:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,857 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-10-20 03:03:36,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-10-20 03:03:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:03:36,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:36,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:36,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:03:36,860 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:36,861 INFO L82 PathProgramCache]: Analyzing trace with hash -337791903, now seen corresponding path program 1 times [2020-10-20 03:03:36,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:36,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635237296] [2020-10-20 03:03:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:36,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635237296] [2020-10-20 03:03:36,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:36,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:03:36,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732134542] [2020-10-20 03:03:36,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 03:03:36,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:36,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 03:03:36,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 03:03:36,955 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-10-20 03:03:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:36,987 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-10-20 03:03:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 03:03:36,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-20 03:03:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:36,989 INFO L225 Difference]: With dead ends: 174 [2020-10-20 03:03:36,989 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 03:03:36,989 INFO L677 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 [2020-10-20 03:03:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 03:03:36,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-20 03:03:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 03:03:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-10-20 03:03:36,996 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-10-20 03:03:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:36,997 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-10-20 03:03:36,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 03:03:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-10-20 03:03:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:03:37,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:37,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:37,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:03:37,001 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1881630110, now seen corresponding path program 1 times [2020-10-20 03:03:37,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:37,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700404927] [2020-10-20 03:03:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:37,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700404927] [2020-10-20 03:03:37,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:37,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:03:37,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182438491] [2020-10-20 03:03:37,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:37,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:37,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:37,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:37,065 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-10-20 03:03:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:37,097 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-10-20 03:03:37,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:03:37,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:03:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:37,098 INFO L225 Difference]: With dead ends: 85 [2020-10-20 03:03:37,099 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 03:03:37,099 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 [2020-10-20 03:03:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 03:03:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-20 03:03:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 03:03:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-10-20 03:03:37,103 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-10-20 03:03:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:37,103 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-10-20 03:03:37,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-10-20 03:03:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:03:37,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:37,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:37,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:03:37,104 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:37,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:37,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1813720345, now seen corresponding path program 1 times [2020-10-20 03:03:37,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:37,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593300778] [2020-10-20 03:03:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:37,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593300778] [2020-10-20 03:03:37,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:37,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:37,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818590944] [2020-10-20 03:03:37,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:03:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:03:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:37,164 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-10-20 03:03:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:37,203 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-20 03:03:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:03:37,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 03:03:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:37,204 INFO L225 Difference]: With dead ends: 62 [2020-10-20 03:03:37,204 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 03:03:37,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:03:37,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 03:03:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 03:03:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 03:03:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-20 03:03:37,208 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-20 03:03:37,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:37,208 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-20 03:03:37,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:03:37,208 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-20 03:03:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:03:37,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:37,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:37,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:03:37,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:37,210 INFO L82 PathProgramCache]: Analyzing trace with hash 391097630, now seen corresponding path program 1 times [2020-10-20 03:03:37,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:37,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792549122] [2020-10-20 03:03:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:37,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792549122] [2020-10-20 03:03:37,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:37,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:03:37,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834171708] [2020-10-20 03:03:37,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:03:37,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:37,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:03:37,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:03:37,335 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-10-20 03:03:37,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:37,397 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-10-20 03:03:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:03:37,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 03:03:37,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:37,400 INFO L225 Difference]: With dead ends: 44 [2020-10-20 03:03:37,400 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 03:03:37,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:03:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 03:03:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 03:03:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 03:03:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-10-20 03:03:37,404 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-10-20 03:03:37,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:37,405 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-10-20 03:03:37,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:03:37,406 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-10-20 03:03:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 03:03:37,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:03:37,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:03:37,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:03:37,408 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:03:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:03:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2114303388, now seen corresponding path program 1 times [2020-10-20 03:03:37,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:03:37,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504522345] [2020-10-20 03:03:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:03:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:03:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:03:37,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504522345] [2020-10-20 03:03:37,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:03:37,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:03:37,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050146449] [2020-10-20 03:03:37,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:03:37,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:03:37,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:03:37,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:03:37,497 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-10-20 03:03:37,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:03:37,514 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-10-20 03:03:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:03:37,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-20 03:03:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:03:37,515 INFO L225 Difference]: With dead ends: 37 [2020-10-20 03:03:37,515 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:03:37,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:03:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:03:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:03:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:03:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:03:37,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 03:03:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:03:37,520 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:03:37,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:03:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:03:37,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:03:37,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:03:37,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:03:37 BasicIcfg [2020-10-20 03:03:37,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:03:37,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:03:37,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:03:37,531 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:03:37,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:03:33" (3/4) ... [2020-10-20 03:03:37,536 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:03:37,544 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:03:37,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:03:37,545 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:03:37,552 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:03:37,552 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:03:37,552 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:03:37,553 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:03:37,596 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:03:37,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:03:37,599 INFO L168 Benchmark]: Toolchain (without parser) took 5307.94 ms. Allocated memory was 34.6 MB in the beginning and 70.8 MB in the end (delta: 36.2 MB). Free memory was 9.9 MB in the beginning and 19.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:37,600 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.5 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 03:03:37,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.56 ms. Allocated memory was 34.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Free memory was 9.0 MB in the beginning and 25.3 MB in the end (delta: -16.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:37,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.40 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 23.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:37,602 INFO L168 Benchmark]: Boogie Preprocessor took 26.11 ms. Allocated memory is still 46.1 MB. Free memory was 23.3 MB in the beginning and 21.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:37,602 INFO L168 Benchmark]: RCFGBuilder took 477.96 ms. Allocated memory was 46.1 MB in the beginning and 47.2 MB in the end (delta: 1.0 MB). Free memory was 21.7 MB in the beginning and 12.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:37,603 INFO L168 Benchmark]: TraceAbstraction took 3927.22 ms. Allocated memory was 47.7 MB in the beginning and 70.8 MB in the end (delta: 23.1 MB). Free memory was 28.6 MB in the beginning and 23.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:37,604 INFO L168 Benchmark]: Witness Printer took 67.54 ms. Allocated memory is still 70.8 MB. Free memory was 22.4 MB in the beginning and 19.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:03:37,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.5 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 739.56 ms. Allocated memory was 34.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Free memory was 9.0 MB in the beginning and 25.3 MB in the end (delta: -16.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 50.40 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 23.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.11 ms. Allocated memory is still 46.1 MB. Free memory was 23.3 MB in the beginning and 21.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 477.96 ms. Allocated memory was 46.1 MB in the beginning and 47.2 MB in the end (delta: 1.0 MB). Free memory was 21.7 MB in the beginning and 12.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3927.22 ms. Allocated memory was 47.7 MB in the beginning and 70.8 MB in the end (delta: 23.1 MB). Free memory was 28.6 MB in the beginning and 23.2 MB in the end (delta: 5.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 14.3 GB. * Witness Printer took 67.54 ms. Allocated memory is still 70.8 MB. Free memory was 22.4 MB in the beginning and 19.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1009 VarBasedMoverChecksPositive, 52 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 39 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 75 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.3s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 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 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 156 SDtfs, 122 SDslu, 177 SDs, 0 SdLazy, 115 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...