/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:08:01,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:08:01,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:08:01,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:08:01,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:08:01,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:08:01,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:08:01,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:08:01,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:08:01,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:08:01,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:08:01,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:08:01,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:08:01,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:08:01,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:08:01,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:08:01,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:08:01,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:08:01,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:08:01,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:08:01,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:08:01,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:08:01,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:08:01,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:08:01,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:08:01,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:08:01,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:08:01,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:08:01,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:08:01,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:08:01,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:08:01,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:08:01,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:08:01,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:08:01,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:08:01,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:08:01,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:08:01,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:08:01,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:08:01,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:08:01,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:08:01,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 22:08:01,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:08:01,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:08:01,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:08:01,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:08:01,364 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:08:01,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:08:01,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:08:01,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:08:01,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:08:01,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:08:01,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:08:01,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:08:01,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:08:01,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:08:01,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:08:01,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:08:01,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:08:01,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:08:01,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:08:01,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:08:01,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:08:01,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:08:01,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:08:01,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:08:01,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:08:01,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:08:01,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:08:01,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:08:01,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:08:01,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:08:01,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:08:01,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:08:01,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:08:01,631 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:08:01,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-04-17 22:08:01,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d079a9b/cd37084a627f4dfeb67fd12e6f733d71/FLAGa3899f58b [2020-04-17 22:08:02,186 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:08:02,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2020-04-17 22:08:02,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d079a9b/cd37084a627f4dfeb67fd12e6f733d71/FLAGa3899f58b [2020-04-17 22:08:02,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d079a9b/cd37084a627f4dfeb67fd12e6f733d71 [2020-04-17 22:08:02,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:08:02,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:08:02,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:08:02,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:08:02,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:08:02,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:08:02" (1/1) ... [2020-04-17 22:08:02,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297684a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:02, skipping insertion in model container [2020-04-17 22:08:02,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:08:02" (1/1) ... [2020-04-17 22:08:02,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:08:02,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:08:03,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:08:03,093 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:08:03,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:08:03,258 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:08:03,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03 WrapperNode [2020-04-17 22:08:03,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:08:03,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:08:03,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:08:03,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:08:03,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:08:03,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:08:03,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:08:03,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:08:03,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (1/1) ... [2020-04-17 22:08:03,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:08:03,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:08:03,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:08:03,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:08:03,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (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 [2020-04-17 22:08:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:08:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:08:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:08:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:08:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:08:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:08:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:08:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:08:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:08:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:08:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 22:08:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 22:08:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:08:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:08:03,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:08:03,489 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:08:03,983 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:08:03,983 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:08:03,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:08:03 BoogieIcfgContainer [2020-04-17 22:08:03,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:08:03,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:08:03,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:08:03,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:08:03,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:08:02" (1/3) ... [2020-04-17 22:08:03,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35619f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:08:03, skipping insertion in model container [2020-04-17 22:08:03,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:08:03" (2/3) ... [2020-04-17 22:08:03,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35619f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:08:03, skipping insertion in model container [2020-04-17 22:08:03,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:08:03" (3/3) ... [2020-04-17 22:08:04,000 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-04-17 22:08:04,010 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:08:04,010 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:08:04,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:08:04,019 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:08:04,046 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,047 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,047 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,047 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,048 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,049 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,049 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,049 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,049 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,050 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,050 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,050 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,051 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,051 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,051 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,052 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,052 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,052 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,053 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,053 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,053 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,053 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,054 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,058 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,058 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,058 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,059 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,065 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,065 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,065 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,066 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,069 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,069 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,069 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,069 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,073 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,073 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,073 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,073 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:08:04,090 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 22:08:04,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:08:04,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:08:04,111 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:08:04,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:08:04,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:08:04,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:08:04,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:08:04,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:08:04,128 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:04,130 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:04,181 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 22:08:04,181 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:08:04,187 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 22:08:04,190 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-04-17 22:08:04,215 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-04-17 22:08:04,215 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:08:04,216 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-17 22:08:04,220 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-17 22:08:04,221 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:08:06,092 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-04-17 22:08:06,093 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-04-17 22:08:06,096 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-17 22:08:06,159 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-17 22:08:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-17 22:08:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:08:06,172 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:06,173 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:06,173 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:06,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-04-17 22:08:06,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:06,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310400052] [2020-04-17 22:08:06,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:06,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310400052] [2020-04-17 22:08:06,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:06,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:06,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594944155] [2020-04-17 22:08:06,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:08:06,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:08:06,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:08:06,381 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-17 22:08:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:06,432 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-17 22:08:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:08:06,434 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 22:08:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:06,475 INFO L225 Difference]: With dead ends: 850 [2020-04-17 22:08:06,475 INFO L226 Difference]: Without dead ends: 706 [2020-04-17 22:08:06,477 INFO L678 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 [2020-04-17 22:08:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-17 22:08:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-17 22:08:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-17 22:08:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-17 22:08:06,592 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-17 22:08:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:06,594 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-17 22:08:06,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:08:06,594 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-17 22:08:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:08:06,597 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:06,597 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:06,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:06,598 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-04-17 22:08:06,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:06,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466160818] [2020-04-17 22:08:06,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:06,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466160818] [2020-04-17 22:08:06,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:06,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:06,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331738701] [2020-04-17 22:08:06,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:06,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:06,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:06,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:06,788 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-17 22:08:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:06,827 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-17 22:08:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:06,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:08:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:06,834 INFO L225 Difference]: With dead ends: 778 [2020-04-17 22:08:06,834 INFO L226 Difference]: Without dead ends: 634 [2020-04-17 22:08:06,835 INFO L678 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 [2020-04-17 22:08:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-17 22:08:06,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-17 22:08:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-17 22:08:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-17 22:08:06,865 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-17 22:08:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:06,866 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-17 22:08:06,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-17 22:08:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:08:06,868 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:06,869 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:06,869 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1068447712, now seen corresponding path program 1 times [2020-04-17 22:08:06,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:06,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276250698] [2020-04-17 22:08:06,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:06,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276250698] [2020-04-17 22:08:06,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:06,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:06,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537429555] [2020-04-17 22:08:06,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:06,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:06,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:06,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:06,967 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-17 22:08:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,010 INFO L93 Difference]: Finished difference Result 718 states and 2351 transitions. [2020-04-17 22:08:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:07,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:08:07,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,016 INFO L225 Difference]: With dead ends: 718 [2020-04-17 22:08:07,016 INFO L226 Difference]: Without dead ends: 610 [2020-04-17 22:08:07,016 INFO L678 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 [2020-04-17 22:08:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-04-17 22:08:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2020-04-17 22:08:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-04-17 22:08:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 2042 transitions. [2020-04-17 22:08:07,042 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 2042 transitions. Word has length 12 [2020-04-17 22:08:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,042 INFO L479 AbstractCegarLoop]: Abstraction has 610 states and 2042 transitions. [2020-04-17 22:08:07,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 2042 transitions. [2020-04-17 22:08:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:08:07,045 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,045 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,046 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1923922428, now seen corresponding path program 1 times [2020-04-17 22:08:07,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104482062] [2020-04-17 22:08:07,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104482062] [2020-04-17 22:08:07,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:07,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202561612] [2020-04-17 22:08:07,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:07,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:07,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:07,116 INFO L87 Difference]: Start difference. First operand 610 states and 2042 transitions. Second operand 4 states. [2020-04-17 22:08:07,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,156 INFO L93 Difference]: Finished difference Result 674 states and 2178 transitions. [2020-04-17 22:08:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:07,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 22:08:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,161 INFO L225 Difference]: With dead ends: 674 [2020-04-17 22:08:07,162 INFO L226 Difference]: Without dead ends: 578 [2020-04-17 22:08:07,162 INFO L678 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 [2020-04-17 22:08:07,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-04-17 22:08:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-04-17 22:08:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-04-17 22:08:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-04-17 22:08:07,186 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-04-17 22:08:07,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,187 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-04-17 22:08:07,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:07,187 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-04-17 22:08:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:08:07,189 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,189 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,189 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash -488944074, now seen corresponding path program 1 times [2020-04-17 22:08:07,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601665260] [2020-04-17 22:08:07,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601665260] [2020-04-17 22:08:07,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:07,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156024194] [2020-04-17 22:08:07,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:07,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:07,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:07,285 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-04-17 22:08:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,330 INFO L93 Difference]: Finished difference Result 854 states and 2662 transitions. [2020-04-17 22:08:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:07,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:08:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,335 INFO L225 Difference]: With dead ends: 854 [2020-04-17 22:08:07,336 INFO L226 Difference]: Without dead ends: 618 [2020-04-17 22:08:07,336 INFO L678 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 [2020-04-17 22:08:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-04-17 22:08:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-04-17 22:08:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-04-17 22:08:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1686 transitions. [2020-04-17 22:08:07,357 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1686 transitions. Word has length 14 [2020-04-17 22:08:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,358 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1686 transitions. [2020-04-17 22:08:07,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1686 transitions. [2020-04-17 22:08:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:08:07,359 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,359 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash -311989916, now seen corresponding path program 1 times [2020-04-17 22:08:07,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115059163] [2020-04-17 22:08:07,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115059163] [2020-04-17 22:08:07,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:08:07,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596958153] [2020-04-17 22:08:07,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:07,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:07,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:07,432 INFO L87 Difference]: Start difference. First operand 538 states and 1686 transitions. Second operand 4 states. [2020-04-17 22:08:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,470 INFO L93 Difference]: Finished difference Result 562 states and 1726 transitions. [2020-04-17 22:08:07,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:07,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:08:07,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,477 INFO L225 Difference]: With dead ends: 562 [2020-04-17 22:08:07,477 INFO L226 Difference]: Without dead ends: 514 [2020-04-17 22:08:07,478 INFO L678 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 [2020-04-17 22:08:07,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-04-17 22:08:07,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-04-17 22:08:07,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-04-17 22:08:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1598 transitions. [2020-04-17 22:08:07,499 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1598 transitions. Word has length 14 [2020-04-17 22:08:07,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,499 INFO L479 AbstractCegarLoop]: Abstraction has 514 states and 1598 transitions. [2020-04-17 22:08:07,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1598 transitions. [2020-04-17 22:08:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:07,501 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,502 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,502 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,503 INFO L82 PathProgramCache]: Analyzing trace with hash 350267355, now seen corresponding path program 1 times [2020-04-17 22:08:07,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637350823] [2020-04-17 22:08:07,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637350823] [2020-04-17 22:08:07,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:07,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971956349] [2020-04-17 22:08:07,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:07,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:07,615 INFO L87 Difference]: Start difference. First operand 514 states and 1598 transitions. Second operand 5 states. [2020-04-17 22:08:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,663 INFO L93 Difference]: Finished difference Result 778 states and 2380 transitions. [2020-04-17 22:08:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:07,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:07,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,667 INFO L225 Difference]: With dead ends: 778 [2020-04-17 22:08:07,667 INFO L226 Difference]: Without dead ends: 418 [2020-04-17 22:08:07,669 INFO L678 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 [2020-04-17 22:08:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-04-17 22:08:07,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-04-17 22:08:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-04-17 22:08:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1276 transitions. [2020-04-17 22:08:07,702 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1276 transitions. Word has length 15 [2020-04-17 22:08:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,703 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 1276 transitions. [2020-04-17 22:08:07,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:07,703 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1276 transitions. [2020-04-17 22:08:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:07,704 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,704 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,704 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,705 INFO L82 PathProgramCache]: Analyzing trace with hash -432648259, now seen corresponding path program 2 times [2020-04-17 22:08:07,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102658431] [2020-04-17 22:08:07,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102658431] [2020-04-17 22:08:07,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:07,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907159750] [2020-04-17 22:08:07,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:07,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:07,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:07,786 INFO L87 Difference]: Start difference. First operand 418 states and 1276 transitions. Second operand 5 states. [2020-04-17 22:08:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:07,861 INFO L93 Difference]: Finished difference Result 766 states and 2228 transitions. [2020-04-17 22:08:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:08:07,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:07,865 INFO L225 Difference]: With dead ends: 766 [2020-04-17 22:08:07,865 INFO L226 Difference]: Without dead ends: 370 [2020-04-17 22:08:07,867 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-17 22:08:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-04-17 22:08:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 322. [2020-04-17 22:08:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-04-17 22:08:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 910 transitions. [2020-04-17 22:08:07,881 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 910 transitions. Word has length 15 [2020-04-17 22:08:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:07,884 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 910 transitions. [2020-04-17 22:08:07,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 910 transitions. [2020-04-17 22:08:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:07,893 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:07,893 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:07,894 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:07,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:07,894 INFO L82 PathProgramCache]: Analyzing trace with hash -96752386, now seen corresponding path program 1 times [2020-04-17 22:08:07,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:07,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994911052] [2020-04-17 22:08:07,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:07,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994911052] [2020-04-17 22:08:07,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:07,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:07,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934878101] [2020-04-17 22:08:07,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:07,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:07,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:07,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:07,985 INFO L87 Difference]: Start difference. First operand 322 states and 910 transitions. Second operand 5 states. [2020-04-17 22:08:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:08,020 INFO L93 Difference]: Finished difference Result 454 states and 1236 transitions. [2020-04-17 22:08:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:08,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:08:08,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:08,023 INFO L225 Difference]: With dead ends: 454 [2020-04-17 22:08:08,023 INFO L226 Difference]: Without dead ends: 238 [2020-04-17 22:08:08,023 INFO L678 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 [2020-04-17 22:08:08,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-17 22:08:08,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-04-17 22:08:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-04-17 22:08:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 639 transitions. [2020-04-17 22:08:08,031 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 639 transitions. Word has length 15 [2020-04-17 22:08:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:08,031 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 639 transitions. [2020-04-17 22:08:08,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:08,031 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 639 transitions. [2020-04-17 22:08:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:08:08,032 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:08,032 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:08,032 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:08,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:08,033 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-04-17 22:08:08,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:08,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64676136] [2020-04-17 22:08:08,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:08,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64676136] [2020-04-17 22:08:08,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:08,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:08:08,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280983929] [2020-04-17 22:08:08,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:08:08,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:08:08,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:08:08,087 INFO L87 Difference]: Start difference. First operand 238 states and 639 transitions. Second operand 4 states. [2020-04-17 22:08:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:08,120 INFO L93 Difference]: Finished difference Result 283 states and 696 transitions. [2020-04-17 22:08:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:08:08,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-04-17 22:08:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:08,122 INFO L225 Difference]: With dead ends: 283 [2020-04-17 22:08:08,123 INFO L226 Difference]: Without dead ends: 214 [2020-04-17 22:08:08,123 INFO L678 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 [2020-04-17 22:08:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-04-17 22:08:08,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-04-17 22:08:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-04-17 22:08:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 534 transitions. [2020-04-17 22:08:08,130 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 534 transitions. Word has length 15 [2020-04-17 22:08:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:08,132 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 534 transitions. [2020-04-17 22:08:08,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:08:08,132 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 534 transitions. [2020-04-17 22:08:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:08:08,133 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:08,133 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:08,133 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:08,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:08,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-04-17 22:08:08,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:08,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321540102] [2020-04-17 22:08:08,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:08,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321540102] [2020-04-17 22:08:08,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:08,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:08,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329814279] [2020-04-17 22:08:08,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:08,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:08,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:08,189 INFO L87 Difference]: Start difference. First operand 214 states and 534 transitions. Second operand 5 states. [2020-04-17 22:08:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:08,235 INFO L93 Difference]: Finished difference Result 211 states and 465 transitions. [2020-04-17 22:08:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:08:08,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-04-17 22:08:08,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:08,236 INFO L225 Difference]: With dead ends: 211 [2020-04-17 22:08:08,237 INFO L226 Difference]: Without dead ends: 158 [2020-04-17 22:08:08,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:08:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-17 22:08:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-17 22:08:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-17 22:08:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 339 transitions. [2020-04-17 22:08:08,242 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 339 transitions. Word has length 16 [2020-04-17 22:08:08,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:08,242 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 339 transitions. [2020-04-17 22:08:08,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:08,243 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 339 transitions. [2020-04-17 22:08:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:08:08,243 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:08,243 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:08,244 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:08,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-04-17 22:08:08,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:08,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809857432] [2020-04-17 22:08:08,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:08,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809857432] [2020-04-17 22:08:08,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:08,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 22:08:08,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323791310] [2020-04-17 22:08:08,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:08:08,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:08,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:08:08,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:08:08,307 INFO L87 Difference]: Start difference. First operand 158 states and 339 transitions. Second operand 6 states. [2020-04-17 22:08:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:08,361 INFO L93 Difference]: Finished difference Result 134 states and 268 transitions. [2020-04-17 22:08:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:08:08,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-04-17 22:08:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:08,363 INFO L225 Difference]: With dead ends: 134 [2020-04-17 22:08:08,363 INFO L226 Difference]: Without dead ends: 95 [2020-04-17 22:08:08,363 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:08:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-04-17 22:08:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-04-17 22:08:08,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-04-17 22:08:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 181 transitions. [2020-04-17 22:08:08,367 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 181 transitions. Word has length 17 [2020-04-17 22:08:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:08,367 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 181 transitions. [2020-04-17 22:08:08,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:08:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 181 transitions. [2020-04-17 22:08:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 22:08:08,368 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:08,368 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:08,368 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:08,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:08,369 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-04-17 22:08:08,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:08,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805975622] [2020-04-17 22:08:08,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:08,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805975622] [2020-04-17 22:08:08,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:08,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:08:08,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083448593] [2020-04-17 22:08:08,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:08:08,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:08,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:08:08,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:08:08,422 INFO L87 Difference]: Start difference. First operand 95 states and 181 transitions. Second operand 5 states. [2020-04-17 22:08:08,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:08,454 INFO L93 Difference]: Finished difference Result 109 states and 198 transitions. [2020-04-17 22:08:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:08:08,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-04-17 22:08:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:08,456 INFO L225 Difference]: With dead ends: 109 [2020-04-17 22:08:08,456 INFO L226 Difference]: Without dead ends: 93 [2020-04-17 22:08:08,456 INFO L678 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 [2020-04-17 22:08:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-17 22:08:08,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-04-17 22:08:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-04-17 22:08:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 169 transitions. [2020-04-17 22:08:08,460 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 169 transitions. Word has length 19 [2020-04-17 22:08:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:08,460 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 169 transitions. [2020-04-17 22:08:08,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:08:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 169 transitions. [2020-04-17 22:08:08,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-17 22:08:08,461 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:08:08,461 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:08:08,461 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:08:08,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:08:08,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-04-17 22:08:08,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:08:08,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485223454] [2020-04-17 22:08:08,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:08:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:08:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:08:08,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485223454] [2020-04-17 22:08:08,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:08:08,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-17 22:08:08,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116229752] [2020-04-17 22:08:08,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-17 22:08:08,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:08:08,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-17 22:08:08,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:08:08,545 INFO L87 Difference]: Start difference. First operand 91 states and 169 transitions. Second operand 7 states. [2020-04-17 22:08:08,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:08:08,589 INFO L93 Difference]: Finished difference Result 81 states and 154 transitions. [2020-04-17 22:08:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:08:08,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-04-17 22:08:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:08:08,590 INFO L225 Difference]: With dead ends: 81 [2020-04-17 22:08:08,590 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:08:08,590 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:08:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:08:08,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:08:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:08:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:08:08,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-04-17 22:08:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:08:08,591 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:08:08,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-17 22:08:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:08:08,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:08:08,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:08:08 BasicIcfg [2020-04-17 22:08:08,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:08:08,598 INFO L168 Benchmark]: Toolchain (without parser) took 6086.92 ms. Allocated memory was 139.5 MB in the beginning and 279.4 MB in the end (delta: 140.0 MB). Free memory was 102.7 MB in the beginning and 115.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 127.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:08,599 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 22:08:08,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.87 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.8 MB in the beginning and 160.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:08,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.68 ms. Allocated memory is still 204.5 MB. Free memory was 160.6 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:08,601 INFO L168 Benchmark]: Boogie Preprocessor took 58.04 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:08,602 INFO L168 Benchmark]: RCFGBuilder took 580.73 ms. Allocated memory is still 204.5 MB. Free memory was 156.6 MB in the beginning and 133.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:08,602 INFO L168 Benchmark]: TraceAbstraction took 4606.45 ms. Allocated memory was 204.5 MB in the beginning and 279.4 MB in the end (delta: 75.0 MB). Free memory was 132.6 MB in the beginning and 115.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 92.2 MB. Max. memory is 7.1 GB. [2020-04-17 22:08:08,606 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.87 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 100.8 MB in the beginning and 160.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 89.68 ms. Allocated memory is still 204.5 MB. Free memory was 160.6 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.04 ms. Allocated memory is still 204.5 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 580.73 ms. Allocated memory is still 204.5 MB. Free memory was 156.6 MB in the beginning and 133.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4606.45 ms. Allocated memory was 204.5 MB in the beginning and 279.4 MB in the end (delta: 75.0 MB). Free memory was 132.6 MB in the beginning and 115.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 92.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 953 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 32 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 380 SDtfs, 379 SDslu, 641 SDs, 0 SdLazy, 227 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 7855 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...