./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46e60384d076cd36e28bd9e22b5f4fd53aad4615 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:30:11,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:30:11,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:30:11,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:30:11,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:30:11,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:30:11,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:30:11,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:30:11,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:30:11,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:30:11,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:30:11,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:30:11,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:30:11,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:30:11,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:30:11,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:30:11,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:30:11,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:30:11,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:30:11,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:30:11,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:30:11,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:30:11,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:30:11,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:30:11,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:30:11,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:30:11,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:30:11,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:30:11,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:30:11,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:30:11,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:30:11,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:30:11,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:30:11,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:30:11,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:30:11,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:30:11,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:30:11,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:30:11,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:30:11,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:30:11,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:30:11,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:30:11,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:30:11,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:30:11,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:30:11,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:30:11,327 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:30:11,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:30:11,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:30:11,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:30:11,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:30:11,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:30:11,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:30:11,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:30:11,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:30:11,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:30:11,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:30:11,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:30:11,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:30:11,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:30:11,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:30:11,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:30:11,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:30:11,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:30:11,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:30:11,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:30:11,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:30:11,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:30:11,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:30:11,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:30:11,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:30:11,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46e60384d076cd36e28bd9e22b5f4fd53aad4615 [2020-10-26 00:30:11,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:30:11,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:30:11,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:30:11,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:30:11,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:30:11,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2020-10-26 00:30:11,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f8456a2/34976f8066934eb4ab3d85564fc069da/FLAGc0f90d37d [2020-10-26 00:30:12,582 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:30:12,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2020-10-26 00:30:12,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f8456a2/34976f8066934eb4ab3d85564fc069da/FLAGc0f90d37d [2020-10-26 00:30:12,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f8456a2/34976f8066934eb4ab3d85564fc069da [2020-10-26 00:30:12,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:30:12,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:30:12,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:12,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:30:12,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:30:12,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:12" (1/1) ... [2020-10-26 00:30:12,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17007c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:12, skipping insertion in model container [2020-10-26 00:30:12,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:30:12" (1/1) ... [2020-10-26 00:30:12,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:30:12,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:30:13,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:13,449 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:30:13,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:30:13,617 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:30:13,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13 WrapperNode [2020-10-26 00:30:13,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:30:13,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:13,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:30:13,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:30:13,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:30:13,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:30:13,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:30:13,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:30:13,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... [2020-10-26 00:30:13,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:30:13,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:30:13,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:30:13,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:30:13,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:30:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:30:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:30:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:30:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:30:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-26 00:30:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-26 00:30:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-26 00:30:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-26 00:30:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-26 00:30:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-26 00:30:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:30:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:30:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:30:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:30:13,822 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:30:14,223 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:30:14,223 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-26 00:30:14,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:14 BoogieIcfgContainer [2020-10-26 00:30:14,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:30:14,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:30:14,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:30:14,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:30:14,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:30:12" (1/3) ... [2020-10-26 00:30:14,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f28d5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:30:14, skipping insertion in model container [2020-10-26 00:30:14,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:30:13" (2/3) ... [2020-10-26 00:30:14,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f28d5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:30:14, skipping insertion in model container [2020-10-26 00:30:14,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:14" (3/3) ... [2020-10-26 00:30:14,235 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2020-10-26 00:30:14,248 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:30:14,249 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:30:14,254 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:30:14,255 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:30:14,298 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,299 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,302 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,302 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,304 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,304 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,305 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,305 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,305 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,306 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,306 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,306 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,312 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,312 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,325 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,326 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,329 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,330 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:30:14,332 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:30:14,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-26 00:30:14,374 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:30:14,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:30:14,374 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:30:14,374 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:30:14,374 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:30:14,375 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:30:14,375 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:30:14,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:30:14,389 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:30:14,391 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:14,395 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:14,397 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-26 00:30:14,452 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-26 00:30:14,452 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:30:14,456 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-26 00:30:14,460 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-26 00:30:16,357 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-26 00:30:16,504 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-26 00:30:17,005 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-26 00:30:17,112 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-26 00:30:17,118 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-10-26 00:30:17,118 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-10-26 00:30:17,125 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-26 00:30:17,173 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-26 00:30:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-26 00:30:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:30:17,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:17,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:17,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:17,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:17,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-10-26 00:30:17,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:17,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418828191] [2020-10-26 00:30:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:17,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418828191] [2020-10-26 00:30:17,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:17,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:30:17,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704956771] [2020-10-26 00:30:17,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:17,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:17,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:17,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:17,600 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-26 00:30:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:17,654 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-26 00:30:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:17,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-26 00:30:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:17,673 INFO L225 Difference]: With dead ends: 282 [2020-10-26 00:30:17,673 INFO L226 Difference]: Without dead ends: 218 [2020-10-26 00:30:17,675 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 [2020-10-26 00:30:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-26 00:30:17,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-26 00:30:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-26 00:30:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-26 00:30:17,746 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-26 00:30:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:17,747 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-26 00:30:17,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-26 00:30:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 00:30:17,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:17,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:17,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:30:17,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-10-26 00:30:17,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:17,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454330418] [2020-10-26 00:30:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:17,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454330418] [2020-10-26 00:30:17,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:17,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:17,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511069834] [2020-10-26 00:30:17,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:17,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:17,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:17,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:17,814 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-10-26 00:30:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:17,851 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-10-26 00:30:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:17,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-26 00:30:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:17,855 INFO L225 Difference]: With dead ends: 202 [2020-10-26 00:30:17,855 INFO L226 Difference]: Without dead ends: 202 [2020-10-26 00:30:17,856 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 [2020-10-26 00:30:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-26 00:30:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-26 00:30:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-26 00:30:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-26 00:30:17,875 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-10-26 00:30:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:17,875 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-26 00:30:17,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-26 00:30:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:30:17,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:17,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:17,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:30:17,877 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:17,878 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-10-26 00:30:17,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:17,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361229] [2020-10-26 00:30:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:17,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361229] [2020-10-26 00:30:17,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:17,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:30:17,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592542583] [2020-10-26 00:30:17,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:17,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:17,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:17,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:17,991 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-26 00:30:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,008 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-10-26 00:30:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:18,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 00:30:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,012 INFO L225 Difference]: With dead ends: 198 [2020-10-26 00:30:18,015 INFO L226 Difference]: Without dead ends: 198 [2020-10-26 00:30:18,015 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 [2020-10-26 00:30:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-26 00:30:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-10-26 00:30:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-26 00:30:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-10-26 00:30:18,041 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-10-26 00:30:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,042 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-10-26 00:30:18,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-10-26 00:30:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:30:18,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:18,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:18,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:30:18,047 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:18,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061887, now seen corresponding path program 1 times [2020-10-26 00:30:18,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:18,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121297991] [2020-10-26 00:30:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:18,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121297991] [2020-10-26 00:30:18,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:18,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-26 00:30:18,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024104048] [2020-10-26 00:30:18,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:18,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:18,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:18,148 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-10-26 00:30:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,158 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-10-26 00:30:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:18,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-26 00:30:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,163 INFO L225 Difference]: With dead ends: 192 [2020-10-26 00:30:18,163 INFO L226 Difference]: Without dead ends: 192 [2020-10-26 00:30:18,164 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 [2020-10-26 00:30:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-26 00:30:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-10-26 00:30:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-26 00:30:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-10-26 00:30:18,180 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-10-26 00:30:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,181 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-10-26 00:30:18,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-10-26 00:30:18,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:30:18,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:18,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:18,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:30:18,183 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:18,184 INFO L82 PathProgramCache]: Analyzing trace with hash 2114610558, now seen corresponding path program 1 times [2020-10-26 00:30:18,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:18,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392856843] [2020-10-26 00:30:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:18,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392856843] [2020-10-26 00:30:18,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:18,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:18,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510991894] [2020-10-26 00:30:18,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:30:18,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:18,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:30:18,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:30:18,252 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 3 states. [2020-10-26 00:30:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,279 INFO L93 Difference]: Finished difference Result 248 states and 635 transitions. [2020-10-26 00:30:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:30:18,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-26 00:30:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,283 INFO L225 Difference]: With dead ends: 248 [2020-10-26 00:30:18,283 INFO L226 Difference]: Without dead ends: 200 [2020-10-26 00:30:18,288 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 [2020-10-26 00:30:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-26 00:30:18,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-10-26 00:30:18,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-26 00:30:18,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 475 transitions. [2020-10-26 00:30:18,301 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 475 transitions. Word has length 12 [2020-10-26 00:30:18,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,302 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 475 transitions. [2020-10-26 00:30:18,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:30:18,302 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 475 transitions. [2020-10-26 00:30:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:30:18,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:18,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:18,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:30:18,306 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:18,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:18,306 INFO L82 PathProgramCache]: Analyzing trace with hash 2115787814, now seen corresponding path program 1 times [2020-10-26 00:30:18,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:18,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715565037] [2020-10-26 00:30:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:18,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715565037] [2020-10-26 00:30:18,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:18,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:18,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930012307] [2020-10-26 00:30:18,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:18,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:18,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:18,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:18,354 INFO L87 Difference]: Start difference. First operand 188 states and 475 transitions. Second operand 4 states. [2020-10-26 00:30:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,387 INFO L93 Difference]: Finished difference Result 260 states and 643 transitions. [2020-10-26 00:30:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:18,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:30:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,389 INFO L225 Difference]: With dead ends: 260 [2020-10-26 00:30:18,389 INFO L226 Difference]: Without dead ends: 188 [2020-10-26 00:30:18,389 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 [2020-10-26 00:30:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-26 00:30:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-26 00:30:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-26 00:30:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-10-26 00:30:18,396 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-10-26 00:30:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,397 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-10-26 00:30:18,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-10-26 00:30:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:30:18,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:18,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:18,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 00:30:18,398 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:18,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 2 times [2020-10-26 00:30:18,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:18,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147745228] [2020-10-26 00:30:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:18,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147745228] [2020-10-26 00:30:18,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:18,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:18,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883398542] [2020-10-26 00:30:18,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:18,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:18,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:18,481 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 4 states. [2020-10-26 00:30:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,529 INFO L93 Difference]: Finished difference Result 221 states and 507 transitions. [2020-10-26 00:30:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:30:18,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-26 00:30:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,531 INFO L225 Difference]: With dead ends: 221 [2020-10-26 00:30:18,531 INFO L226 Difference]: Without dead ends: 157 [2020-10-26 00:30:18,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-26 00:30:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-26 00:30:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-26 00:30:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-10-26 00:30:18,539 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 12 [2020-10-26 00:30:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,540 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-10-26 00:30:18,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:18,540 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-10-26 00:30:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:30:18,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:18,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:18,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 00:30:18,542 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:18,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:18,543 INFO L82 PathProgramCache]: Analyzing trace with hash 596662620, now seen corresponding path program 1 times [2020-10-26 00:30:18,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:18,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637310166] [2020-10-26 00:30:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:18,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637310166] [2020-10-26 00:30:18,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:18,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:18,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623445427] [2020-10-26 00:30:18,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:30:18,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:18,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:30:18,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:18,614 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-10-26 00:30:18,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,665 INFO L93 Difference]: Finished difference Result 159 states and 336 transitions. [2020-10-26 00:30:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 00:30:18,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-26 00:30:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,667 INFO L225 Difference]: With dead ends: 159 [2020-10-26 00:30:18,667 INFO L226 Difference]: Without dead ends: 122 [2020-10-26 00:30:18,667 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 [2020-10-26 00:30:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-26 00:30:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-26 00:30:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-26 00:30:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-10-26 00:30:18,673 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 13 [2020-10-26 00:30:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,673 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-10-26 00:30:18,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:30:18,674 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-10-26 00:30:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:30:18,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:18,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:18,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 00:30:18,675 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:18,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-10-26 00:30:18,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:18,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445757223] [2020-10-26 00:30:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:18,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445757223] [2020-10-26 00:30:18,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:18,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:30:18,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639040081] [2020-10-26 00:30:18,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:30:18,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:18,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:30:18,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:30:18,737 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 6 states. [2020-10-26 00:30:18,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,801 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-10-26 00:30:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:30:18,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-26 00:30:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,803 INFO L225 Difference]: With dead ends: 118 [2020-10-26 00:30:18,803 INFO L226 Difference]: Without dead ends: 54 [2020-10-26 00:30:18,803 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 [2020-10-26 00:30:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-26 00:30:18,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-26 00:30:18,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 00:30:18,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-10-26 00:30:18,807 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-10-26 00:30:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,807 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-10-26 00:30:18,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:30:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-10-26 00:30:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:30:18,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:18,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:18,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 00:30:18,808 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:18,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:18,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-10-26 00:30:18,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:18,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510033412] [2020-10-26 00:30:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:18,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510033412] [2020-10-26 00:30:18,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:18,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:30:18,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821253835] [2020-10-26 00:30:18,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:18,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:18,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:18,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:18,846 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-10-26 00:30:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,873 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-10-26 00:30:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:30:18,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:30:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,875 INFO L225 Difference]: With dead ends: 63 [2020-10-26 00:30:18,875 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 00:30:18,875 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 [2020-10-26 00:30:18,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 00:30:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-26 00:30:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 00:30:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-10-26 00:30:18,877 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-10-26 00:30:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,878 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-10-26 00:30:18,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-10-26 00:30:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:30:18,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:30:18,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:30:18,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 00:30:18,879 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:30:18,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:30:18,879 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-10-26 00:30:18,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:30:18,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900566587] [2020-10-26 00:30:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:30:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:30:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:30:18,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900566587] [2020-10-26 00:30:18,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:30:18,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:30:18,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182795864] [2020-10-26 00:30:18,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:30:18,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:30:18,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:30:18,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:30:18,918 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-10-26 00:30:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:30:18,936 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-10-26 00:30:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:30:18,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-26 00:30:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:30:18,937 INFO L225 Difference]: With dead ends: 34 [2020-10-26 00:30:18,937 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:30:18,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:30:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:30:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:30:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:30:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:30:18,938 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-26 00:30:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:30:18,939 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:30:18,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:30:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:30:18,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:30:18,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 00:30:18,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:30:18 BasicIcfg [2020-10-26 00:30:18,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:30:18,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:30:18,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:30:18,944 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:30:18,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:30:14" (3/4) ... [2020-10-26 00:30:18,949 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:30:18,956 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-26 00:30:18,957 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-26 00:30:18,957 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-26 00:30:18,963 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-26 00:30:18,963 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:30:18,964 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:30:18,964 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:30:19,013 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:30:19,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:30:19,015 INFO L168 Benchmark]: Toolchain (without parser) took 6159.73 ms. Allocated memory was 48.2 MB in the beginning and 113.2 MB in the end (delta: 65.0 MB). Free memory was 25.0 MB in the beginning and 76.9 MB in the end (delta: -51.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:19,017 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 48.2 MB. Free memory was 33.9 MB in the beginning and 33.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:30:19,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.47 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 24.3 MB in the beginning and 41.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:19,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.50 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 39.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:19,022 INFO L168 Benchmark]: Boogie Preprocessor took 42.64 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 38.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:30:19,024 INFO L168 Benchmark]: RCFGBuilder took 506.95 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 32.2 MB in the end (delta: 5.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:19,025 INFO L168 Benchmark]: TraceAbstraction took 4715.48 ms. Allocated memory was 60.8 MB in the beginning and 113.2 MB in the end (delta: 52.4 MB). Free memory was 31.8 MB in the beginning and 79.0 MB in the end (delta: -47.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:19,026 INFO L168 Benchmark]: Witness Printer took 69.69 ms. Allocated memory is still 113.2 MB. Free memory was 79.0 MB in the beginning and 76.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:30:19,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 48.2 MB. Free memory was 33.9 MB in the beginning and 33.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 753.47 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 24.3 MB in the beginning and 41.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.50 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 39.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.64 ms. Allocated memory is still 60.8 MB. Free memory was 39.4 MB in the beginning and 38.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 506.95 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 32.2 MB in the end (delta: 5.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4715.48 ms. Allocated memory was 60.8 MB in the beginning and 113.2 MB in the end (delta: 52.4 MB). Free memory was 31.8 MB in the beginning and 79.0 MB in the end (delta: -47.2 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Witness Printer took 69.69 ms. Allocated memory is still 113.2 MB. Free memory was 79.0 MB in the beginning and 76.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 891 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 220 SDtfs, 143 SDslu, 240 SDs, 0 SdLazy, 133 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 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, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...