./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_pso.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/safe014_pso.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 5c886f694f55e62d2d7ee054d88d9b6d1c1dd73c ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:04:50,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:04:50,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:04:50,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:04:50,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:04:50,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:04:50,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:04:50,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:04:50,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:04:50,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:04:50,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:04:50,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:04:50,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:04:50,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:04:50,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:04:50,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:04:50,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:04:50,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:04:50,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:04:50,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:04:50,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:04:50,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:04:50,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:04:50,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:04:50,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:04:50,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:04:50,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:04:50,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:04:50,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:04:50,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:04:50,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:04:50,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:04:50,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:04:50,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:04:50,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:04:50,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:04:50,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:04:50,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:04:50,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:04:50,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:04:50,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:04:50,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:04:50,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:04:50,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:04:50,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:04:50,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:04:50,304 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:04:50,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:04:50,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:04:50,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:04:50,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:04:50,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:04:50,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:04:50,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:04:50,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:04:50,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:04:50,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:04:50,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:04:50,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:04:50,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:04:50,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:04:50,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:04:50,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:04:50,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:04:50,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:04:50,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:04:50,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:04:50,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:04:50,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:04:50,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:04:50,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:04:50,312 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 -> 5c886f694f55e62d2d7ee054d88d9b6d1c1dd73c [2020-10-20 03:04:50,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:04:50,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:04:50,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:04:50,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:04:50,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:04:50,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_pso.opt.i [2020-10-20 03:04:50,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baecbad0/d7528b3b3d6443c680708918b60f92d7/FLAGd3f97aa23 [2020-10-20 03:04:51,172 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:04:51,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.opt.i [2020-10-20 03:04:51,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baecbad0/d7528b3b3d6443c680708918b60f92d7/FLAGd3f97aa23 [2020-10-20 03:04:51,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baecbad0/d7528b3b3d6443c680708918b60f92d7 [2020-10-20 03:04:51,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:04:51,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:04:51,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:51,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:04:51,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:04:51,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:51" (1/1) ... [2020-10-20 03:04:51,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@524722f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:51, skipping insertion in model container [2020-10-20 03:04:51,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:04:51" (1/1) ... [2020-10-20 03:04:51,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:04:51,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:04:51,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:51,980 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:04:52,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:04:52,147 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:04:52,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52 WrapperNode [2020-10-20 03:04:52,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:04:52,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:52,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:04:52,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:04:52,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:04:52,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:04:52,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:04:52,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:04:52,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (1/1) ... [2020-10-20 03:04:52,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:04:52,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:04:52,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:04:52,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:04:52,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (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 03:04:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:04:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-20 03:04:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:04:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:04:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-20 03:04:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-20 03:04:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-20 03:04:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-20 03:04:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-20 03:04:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-20 03:04:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:04:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-20 03:04:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:04:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:04:52,321 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 03:04:52,688 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:04:52,688 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-20 03:04:52,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:52 BoogieIcfgContainer [2020-10-20 03:04:52,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:04:52,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:04:52,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:04:52,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:04:52,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:04:51" (1/3) ... [2020-10-20 03:04:52,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0fbb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:52, skipping insertion in model container [2020-10-20 03:04:52,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:04:52" (2/3) ... [2020-10-20 03:04:52,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0fbb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:04:52, skipping insertion in model container [2020-10-20 03:04:52,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:52" (3/3) ... [2020-10-20 03:04:52,710 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-10-20 03:04:52,722 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:04:52,722 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:04:52,729 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 03:04:52,729 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:04:52,754 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,755 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,755 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,756 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,757 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,757 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,757 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,758 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,758 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,759 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,759 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,781 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,784 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,784 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,787 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,787 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,787 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,787 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:04:52,789 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-20 03:04:52,804 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 03:04:52,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:04:52,823 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:04:52,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:04:52,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:04:52,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:04:52,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:04:52,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:04:52,824 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:04:52,836 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:04:52,838 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:52,841 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:52,842 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-20 03:04:52,892 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-20 03:04:52,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-20 03:04:52,899 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 57 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 03:04:52,902 INFO L117 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-20 03:04:53,374 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-10-20 03:04:55,001 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-20 03:04:55,113 INFO L132 LiptonReduction]: Checked pairs total: 2779 [2020-10-20 03:04:55,113 INFO L134 LiptonReduction]: Total number of compositions: 70 [2020-10-20 03:04:55,120 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-20 03:04:55,148 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-20 03:04:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-20 03:04:55,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 03:04:55,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:55,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:55,174 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:55,180 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-10-20 03:04:55,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:55,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847856026] [2020-10-20 03:04:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:55,398 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 03:04:55,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847856026] [2020-10-20 03:04:55,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:55,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:55,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036705400] [2020-10-20 03:04:55,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:04:55,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:55,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:04:55,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:04:55,423 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-20 03:04:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:55,458 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-20 03:04:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:04:55,459 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 03:04:55,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:55,478 INFO L225 Difference]: With dead ends: 362 [2020-10-20 03:04:55,479 INFO L226 Difference]: Without dead ends: 298 [2020-10-20 03:04:55,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:04:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-20 03:04:55,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-20 03:04:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-20 03:04:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-20 03:04:55,557 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-20 03:04:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:55,559 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-20 03:04:55,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:04:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-20 03:04:55,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 03:04:55,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:55,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:55,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:04:55,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:55,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:55,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-10-20 03:04:55,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:55,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643937549] [2020-10-20 03:04:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:55,686 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 03:04:55,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643937549] [2020-10-20 03:04:55,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:55,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:55,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904081996] [2020-10-20 03:04:55,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:55,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:55,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:55,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:55,691 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-10-20 03:04:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:55,768 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-10-20 03:04:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 03:04:55,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-20 03:04:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:55,773 INFO L225 Difference]: With dead ends: 330 [2020-10-20 03:04:55,774 INFO L226 Difference]: Without dead ends: 266 [2020-10-20 03:04:55,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-20 03:04:55,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-20 03:04:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-20 03:04:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-10-20 03:04:55,823 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-10-20 03:04:55,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:55,824 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-10-20 03:04:55,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-10-20 03:04:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 03:04:55,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:55,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:55,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 03:04:55,827 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:55,828 INFO L82 PathProgramCache]: Analyzing trace with hash 585999155, now seen corresponding path program 1 times [2020-10-20 03:04:55,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:55,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28436671] [2020-10-20 03:04:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:55,925 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 03:04:55,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28436671] [2020-10-20 03:04:55,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:55,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:55,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433784140] [2020-10-20 03:04:55,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:04:55,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:55,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:04:55,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:55,928 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-10-20 03:04:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:56,039 INFO L93 Difference]: Finished difference Result 344 states and 924 transitions. [2020-10-20 03:04:56,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 03:04:56,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 03:04:56,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:56,043 INFO L225 Difference]: With dead ends: 344 [2020-10-20 03:04:56,043 INFO L226 Difference]: Without dead ends: 170 [2020-10-20 03:04:56,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-20 03:04:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-20 03:04:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-20 03:04:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-20 03:04:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 428 transitions. [2020-10-20 03:04:56,056 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 428 transitions. Word has length 10 [2020-10-20 03:04:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:56,060 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 428 transitions. [2020-10-20 03:04:56,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:04:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 428 transitions. [2020-10-20 03:04:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 03:04:56,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:56,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:56,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 03:04:56,065 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:56,066 INFO L82 PathProgramCache]: Analyzing trace with hash 229025079, now seen corresponding path program 1 times [2020-10-20 03:04:56,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:56,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268437683] [2020-10-20 03:04:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:56,162 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 03:04:56,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268437683] [2020-10-20 03:04:56,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:56,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 03:04:56,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605788106] [2020-10-20 03:04:56,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:56,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:56,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:56,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:56,164 INFO L87 Difference]: Start difference. First operand 170 states and 428 transitions. Second operand 4 states. [2020-10-20 03:04:56,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:56,280 INFO L93 Difference]: Finished difference Result 182 states and 442 transitions. [2020-10-20 03:04:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:56,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 03:04:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:56,283 INFO L225 Difference]: With dead ends: 182 [2020-10-20 03:04:56,283 INFO L226 Difference]: Without dead ends: 158 [2020-10-20 03:04:56,284 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 03:04:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-20 03:04:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-20 03:04:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-20 03:04:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 390 transitions. [2020-10-20 03:04:56,293 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 390 transitions. Word has length 12 [2020-10-20 03:04:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:56,294 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 390 transitions. [2020-10-20 03:04:56,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 390 transitions. [2020-10-20 03:04:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:04:56,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:56,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:56,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 03:04:56,296 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:56,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1697755731, now seen corresponding path program 1 times [2020-10-20 03:04:56,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:56,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263227585] [2020-10-20 03:04:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:56,385 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 03:04:56,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263227585] [2020-10-20 03:04:56,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:56,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:04:56,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337766989] [2020-10-20 03:04:56,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 03:04:56,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:56,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 03:04:56,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:56,387 INFO L87 Difference]: Start difference. First operand 158 states and 390 transitions. Second operand 7 states. [2020-10-20 03:04:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:56,499 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-20 03:04:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 03:04:56,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-20 03:04:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:56,502 INFO L225 Difference]: With dead ends: 172 [2020-10-20 03:04:56,502 INFO L226 Difference]: Without dead ends: 130 [2020-10-20 03:04:56,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-20 03:04:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-20 03:04:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-10-20 03:04:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-20 03:04:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-10-20 03:04:56,510 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 13 [2020-10-20 03:04:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:56,510 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-10-20 03:04:56,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 03:04:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-10-20 03:04:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 03:04:56,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:56,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:56,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 03:04:56,513 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1286592520, now seen corresponding path program 1 times [2020-10-20 03:04:56,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:56,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398151438] [2020-10-20 03:04:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:56,593 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 03:04:56,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398151438] [2020-10-20 03:04:56,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:56,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:56,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392694551] [2020-10-20 03:04:56,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:56,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:56,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:56,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:56,596 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 4 states. [2020-10-20 03:04:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:56,622 INFO L93 Difference]: Finished difference Result 134 states and 317 transitions. [2020-10-20 03:04:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:56,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 03:04:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:56,624 INFO L225 Difference]: With dead ends: 134 [2020-10-20 03:04:56,624 INFO L226 Difference]: Without dead ends: 116 [2020-10-20 03:04:56,624 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 03:04:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-20 03:04:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-20 03:04:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-20 03:04:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 278 transitions. [2020-10-20 03:04:56,631 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 278 transitions. Word has length 13 [2020-10-20 03:04:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:56,631 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 278 transitions. [2020-10-20 03:04:56,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 278 transitions. [2020-10-20 03:04:56,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 03:04:56,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:56,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:56,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 03:04:56,634 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:56,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1405608924, now seen corresponding path program 1 times [2020-10-20 03:04:56,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:56,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489384373] [2020-10-20 03:04:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:56,690 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 03:04:56,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489384373] [2020-10-20 03:04:56,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:56,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:56,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804552317] [2020-10-20 03:04:56,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 03:04:56,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:56,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 03:04:56,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 03:04:56,693 INFO L87 Difference]: Start difference. First operand 116 states and 278 transitions. Second operand 4 states. [2020-10-20 03:04:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:56,717 INFO L93 Difference]: Finished difference Result 137 states and 301 transitions. [2020-10-20 03:04:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 03:04:56,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 03:04:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:56,719 INFO L225 Difference]: With dead ends: 137 [2020-10-20 03:04:56,719 INFO L226 Difference]: Without dead ends: 97 [2020-10-20 03:04:56,720 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 03:04:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-20 03:04:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-20 03:04:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 03:04:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 208 transitions. [2020-10-20 03:04:56,724 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 208 transitions. Word has length 14 [2020-10-20 03:04:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:56,725 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 208 transitions. [2020-10-20 03:04:56,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 03:04:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 208 transitions. [2020-10-20 03:04:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 03:04:56,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:56,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:56,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 03:04:56,727 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash -27259733, now seen corresponding path program 1 times [2020-10-20 03:04:56,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:56,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108569198] [2020-10-20 03:04:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:56,799 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 03:04:56,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108569198] [2020-10-20 03:04:56,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:56,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:56,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938854588] [2020-10-20 03:04:56,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:56,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:56,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:56,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:56,802 INFO L87 Difference]: Start difference. First operand 97 states and 208 transitions. Second operand 5 states. [2020-10-20 03:04:56,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:56,845 INFO L93 Difference]: Finished difference Result 95 states and 185 transitions. [2020-10-20 03:04:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:56,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 03:04:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:56,847 INFO L225 Difference]: With dead ends: 95 [2020-10-20 03:04:56,848 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 03:04:56,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 03:04:56,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-20 03:04:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 03:04:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 129 transitions. [2020-10-20 03:04:56,858 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 129 transitions. Word has length 15 [2020-10-20 03:04:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:56,859 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 129 transitions. [2020-10-20 03:04:56,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 129 transitions. [2020-10-20 03:04:56,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 03:04:56,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:56,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:56,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 03:04:56,862 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:56,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:56,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1628487690, now seen corresponding path program 1 times [2020-10-20 03:04:56,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:56,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74561907] [2020-10-20 03:04:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:56,960 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 03:04:56,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74561907] [2020-10-20 03:04:56,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:56,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 03:04:56,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036600616] [2020-10-20 03:04:56,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 03:04:56,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:56,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 03:04:56,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 03:04:56,964 INFO L87 Difference]: Start difference. First operand 70 states and 129 transitions. Second operand 6 states. [2020-10-20 03:04:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:57,021 INFO L93 Difference]: Finished difference Result 63 states and 113 transitions. [2020-10-20 03:04:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:04:57,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 03:04:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:57,023 INFO L225 Difference]: With dead ends: 63 [2020-10-20 03:04:57,023 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 03:04:57,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 03:04:57,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 03:04:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-20 03:04:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 03:04:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-20 03:04:57,028 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-10-20 03:04:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:57,029 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-20 03:04:57,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 03:04:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-20 03:04:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:57,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:57,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:57,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 03:04:57,031 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:57,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1397206146, now seen corresponding path program 1 times [2020-10-20 03:04:57,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:57,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983562406] [2020-10-20 03:04:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:57,135 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 03:04:57,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983562406] [2020-10-20 03:04:57,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:57,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:57,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604434833] [2020-10-20 03:04:57,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:57,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:57,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:57,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:57,140 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-10-20 03:04:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:57,189 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-10-20 03:04:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:57,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:04:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:57,190 INFO L225 Difference]: With dead ends: 65 [2020-10-20 03:04:57,190 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 03:04:57,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 03:04:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-20 03:04:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 03:04:57,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2020-10-20 03:04:57,196 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 18 [2020-10-20 03:04:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:57,196 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2020-10-20 03:04:57,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2020-10-20 03:04:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:57,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:57,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:57,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 03:04:57,198 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:57,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1171950116, now seen corresponding path program 2 times [2020-10-20 03:04:57,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:57,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621505082] [2020-10-20 03:04:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:57,267 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 03:04:57,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621505082] [2020-10-20 03:04:57,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:57,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 03:04:57,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544219380] [2020-10-20 03:04:57,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:57,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:57,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:57,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:57,270 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 5 states. [2020-10-20 03:04:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:57,300 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-10-20 03:04:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 03:04:57,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:04:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:57,301 INFO L225 Difference]: With dead ends: 53 [2020-10-20 03:04:57,301 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 03:04:57,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:57,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 03:04:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-20 03:04:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 03:04:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-10-20 03:04:57,305 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 18 [2020-10-20 03:04:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:57,306 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-10-20 03:04:57,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-10-20 03:04:57,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 03:04:57,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:04:57,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 03:04:57,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 03:04:57,307 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:04:57,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:04:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1333208262, now seen corresponding path program 3 times [2020-10-20 03:04:57,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:04:57,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520249992] [2020-10-20 03:04:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:04:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:04:57,399 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 03:04:57,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520249992] [2020-10-20 03:04:57,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:04:57,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 03:04:57,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784871738] [2020-10-20 03:04:57,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 03:04:57,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:04:57,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 03:04:57,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 03:04:57,401 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 5 states. [2020-10-20 03:04:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:04:57,427 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2020-10-20 03:04:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 03:04:57,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-20 03:04:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:04:57,428 INFO L225 Difference]: With dead ends: 30 [2020-10-20 03:04:57,428 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:04:57,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 03:04:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:04:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:04:57,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:04:57,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:04:57,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-20 03:04:57,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:04:57,430 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:04:57,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 03:04:57,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:04:57,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:04:57,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 03:04:57,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:04:57 BasicIcfg [2020-10-20 03:04:57,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:04:57,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:04:57,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:04:57,436 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:04:57,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:04:52" (3/4) ... [2020-10-20 03:04:57,441 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:04:57,450 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-10-20 03:04:57,450 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-10-20 03:04:57,451 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-10-20 03:04:57,457 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-20 03:04:57,458 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:04:57,458 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:57,458 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:04:57,531 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:04:57,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:04:57,533 INFO L168 Benchmark]: Toolchain (without parser) took 6058.50 ms. Allocated memory was 36.2 MB in the beginning and 83.4 MB in the end (delta: 47.2 MB). Free memory was 12.3 MB in the beginning and 47.6 MB in the end (delta: -35.3 MB). Peak memory consumption was 11.9 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:57,533 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 34.1 MB. Free memory was 19.7 MB in the beginning and 19.6 MB in the end (delta: 66.3 kB). Peak memory consumption was 34.9 kB. Max. memory is 14.3 GB. [2020-10-20 03:04:57,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.91 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 11.4 MB in the beginning and 19.7 MB in the end (delta: -8.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:57,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.38 ms. Allocated memory is still 44.6 MB. Free memory was 19.5 MB in the beginning and 17.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:57,535 INFO L168 Benchmark]: Boogie Preprocessor took 27.57 ms. Allocated memory is still 44.6 MB. Free memory was 17.5 MB in the beginning and 15.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:57,536 INFO L168 Benchmark]: RCFGBuilder took 434.99 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 15.8 MB in the beginning and 10.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:57,536 INFO L168 Benchmark]: TraceAbstraction took 4735.78 ms. Allocated memory was 47.2 MB in the beginning and 83.4 MB in the end (delta: 36.2 MB). Free memory was 29.3 MB in the beginning and 51.4 MB in the end (delta: -22.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:57,537 INFO L168 Benchmark]: Witness Printer took 95.31 ms. Allocated memory is still 83.4 MB. Free memory was 51.4 MB in the beginning and 47.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 03:04:57,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 34.1 MB. Free memory was 19.7 MB in the beginning and 19.6 MB in the end (delta: 66.3 kB). Peak memory consumption was 34.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 667.91 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 11.4 MB in the beginning and 19.7 MB in the end (delta: -8.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 78.38 ms. Allocated memory is still 44.6 MB. Free memory was 19.5 MB in the beginning and 17.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.57 ms. Allocated memory is still 44.6 MB. Free memory was 17.5 MB in the beginning and 15.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 434.99 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 15.8 MB in the beginning and 10.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4735.78 ms. Allocated memory was 47.2 MB in the beginning and 83.4 MB in the end (delta: 36.2 MB). Free memory was 29.3 MB in the beginning and 51.4 MB in the end (delta: -22.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * Witness Printer took 95.31 ms. Allocated memory is still 83.4 MB. Free memory was 51.4 MB in the beginning and 47.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 962 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 66 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.2s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 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: 4.6s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 228 SDtfs, 325 SDslu, 408 SDs, 0 SdLazy, 222 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 12 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 6560 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...