/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-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:28:01,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:28:01,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:28:01,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:28:01,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:28:01,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:28:01,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:28:01,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:28:01,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:28:01,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:28:01,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:28:01,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:28:01,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:28:01,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:28:01,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:28:01,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:28:01,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:28:01,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:28:01,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:28:01,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:28:01,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:28:01,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:28:01,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:28:01,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:28:01,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:28:01,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:28:01,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:28:01,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:28:01,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:28:01,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:28:01,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:28:01,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:28:01,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:28:01,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:28:01,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:28:01,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:28:01,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:28:01,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:28:01,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:28:01,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:28:01,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:28:01,319 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-VariableLbe-McrStrategy.epf [2020-04-18 15:28:01,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:28:01,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:28:01,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:28:01,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:28:01,336 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:28:01,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:28:01,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:28:01,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:28:01,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:28:01,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:28:01,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:28:01,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:28:01,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:28:01,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:28:01,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:28:01,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:28:01,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:28:01,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:28:01,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:28:01,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:28:01,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:28:01,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:28:01,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:28:01,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:28:01,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:28:01,340 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:28:01,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:28:01,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:28:01,341 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:28:01,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:28:01,341 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:28:01,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:28:01,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:28:01,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:28:01,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:28:01,643 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:28:01,644 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-04-18 15:28:01,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b884cec/e4e645bd3e434160a408b1322188e654/FLAGe1ba76889 [2020-04-18 15:28:02,255 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:28:02,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-04-18 15:28:02,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b884cec/e4e645bd3e434160a408b1322188e654/FLAGe1ba76889 [2020-04-18 15:28:02,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b884cec/e4e645bd3e434160a408b1322188e654 [2020-04-18 15:28:02,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:28:02,540 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:28:02,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:28:02,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:28:02,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:28:02,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:28:02" (1/1) ... [2020-04-18 15:28:02,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc2989a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:02, skipping insertion in model container [2020-04-18 15:28:02,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:28:02" (1/1) ... [2020-04-18 15:28:02,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:28:02,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:28:03,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:28:03,205 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:28:03,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:28:03,335 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:28:03,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03 WrapperNode [2020-04-18 15:28:03,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:28:03,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:28:03,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:28:03,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:28:03,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:28:03,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:28:03,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:28:03,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:28:03,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (1/1) ... [2020-04-18 15:28:03,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:28:03,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:28:03,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:28:03,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:28:03,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (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 [2020-04-18 15:28:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:28:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:28:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:28:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:28:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:28:03,491 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:28:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:28:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:28:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:28:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:28:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:28:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:28:03,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:28:03,497 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:28:03,892 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:28:03,892 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:28:03,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:28:03 BoogieIcfgContainer [2020-04-18 15:28:03,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:28:03,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:28:03,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:28:03,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:28:03,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:28:02" (1/3) ... [2020-04-18 15:28:03,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b796cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:28:03, skipping insertion in model container [2020-04-18 15:28:03,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:28:03" (2/3) ... [2020-04-18 15:28:03,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b796cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:28:03, skipping insertion in model container [2020-04-18 15:28:03,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:28:03" (3/3) ... [2020-04-18 15:28:03,906 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-04-18 15:28:03,917 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:28:03,917 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:28:03,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:28:03,925 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:28:03,953 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,954 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,954 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,955 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,955 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,956 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,956 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,956 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,957 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,957 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,957 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,958 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,958 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,958 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,959 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,959 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,959 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,960 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,964 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,964 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,964 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,965 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,971 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,971 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,972 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,972 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,975 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,975 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,975 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,975 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:28:03,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:28:04,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:28:04,013 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:28:04,014 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:28:04,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:28:04,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:28:04,014 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:28:04,014 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:28:04,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:28:04,031 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 15:28:04,033 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:28:04,079 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:28:04,080 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:28:04,085 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:28:04,088 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 15:28:04,110 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 15:28:04,111 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:28:04,111 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:28:04,114 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:28:04,115 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:28:05,611 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-04-18 15:28:05,818 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 15:28:05,818 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 15:28:05,822 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:28:05,850 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:28:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:28:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:28:05,860 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:28:05,861 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:28:05,861 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:28:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:05,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 15:28:05,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:28:05,876 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1975787991] [2020-04-18 15:28:05,893 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:05,906 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:28:05,908 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:28:05,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:28:05,909 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:28:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:05,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 2 times [2020-04-18 15:28:05,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:05,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094456550] [2020-04-18 15:28:05,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:06,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094456550] [2020-04-18 15:28:06,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:06,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:28:06,181 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:06,182 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:06,188 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:28:06,189 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:06,200 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:28:06,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:28:06,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:06,207 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:28:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:06,211 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:28:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:28:06,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:28:06,213 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1975787991] [2020-04-18 15:28:06,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:28:06,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:28:06,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1975787991] [2020-04-18 15:28:06,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:28:06,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:28:06,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:28:06,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:06,222 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:28:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:06,271 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:28:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:28:06,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:28:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:28:06,310 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:28:06,311 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:28:06,314 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:06,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:28:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:28:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:28:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:28:06,411 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:28:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:28:06,412 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:28:06,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:28:06,413 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:28:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:28:06,414 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:28:06,414 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:28:06,414 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:28:06,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:06,415 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 1 times [2020-04-18 15:28:06,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:28:06,415 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [799962051] [2020-04-18 15:28:06,415 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:06,416 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:28:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:28:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:28:06,417 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:28:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:06,417 INFO L82 PathProgramCache]: Analyzing trace with hash -225370989, now seen corresponding path program 2 times [2020-04-18 15:28:06,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:06,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779207857] [2020-04-18 15:28:06,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:06,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779207857] [2020-04-18 15:28:06,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:06,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:06,504 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:06,505 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:06,507 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:28:06,508 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:06,511 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:28:06,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:28:06,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:06,512 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:28:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:06,515 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:28:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:28:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:28:06,515 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:28:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:06,516 INFO L82 PathProgramCache]: Analyzing trace with hash -225372369, now seen corresponding path program 3 times [2020-04-18 15:28:06,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:06,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504699683] [2020-04-18 15:28:06,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:06,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504699683] [2020-04-18 15:28:06,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:06,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:06,579 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:06,580 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:06,581 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:28:06,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:06,599 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:28:06,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:28:06,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:28:06,599 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-04-18 15:28:06,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:06,619 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:28:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:28:06,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:28:06,620 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [799962051] [2020-04-18 15:28:06,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:28:06,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:28:06,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [799962051] [2020-04-18 15:28:06,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:28:06,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:28:06,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:28:06,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:28:06,623 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 15:28:06,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:06,651 INFO L93 Difference]: Finished difference Result 278 states and 745 transitions. [2020-04-18 15:28:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:28:06,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:28:06,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:28:06,653 INFO L225 Difference]: With dead ends: 278 [2020-04-18 15:28:06,654 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 15:28:06,655 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:28:06,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 15:28:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 15:28:06,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 15:28:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 481 transitions. [2020-04-18 15:28:06,668 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 481 transitions. Word has length 9 [2020-04-18 15:28:06,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:28:06,669 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 481 transitions. [2020-04-18 15:28:06,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:28:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 481 transitions. [2020-04-18 15:28:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:28:06,670 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:28:06,670 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:28:06,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:28:06,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:06,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 1 times [2020-04-18 15:28:06,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:28:06,672 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1967850403] [2020-04-18 15:28:06,672 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:06,673 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:28:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:28:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:28:06,674 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:28:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1603400938, now seen corresponding path program 2 times [2020-04-18 15:28:06,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:06,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90671535] [2020-04-18 15:28:06,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:06,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90671535] [2020-04-18 15:28:06,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:06,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:06,733 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:06,734 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:06,735 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:28:06,735 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:06,739 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:28:06,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:28:06,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:06,739 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 15:28:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:06,743 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 15:28:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 15:28:06,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:28:06,744 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:28:06,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:06,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1603399558, now seen corresponding path program 3 times [2020-04-18 15:28:06,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:06,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704235547] [2020-04-18 15:28:06,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:06,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704235547] [2020-04-18 15:28:06,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:06,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:28:06,817 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:06,818 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:06,820 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 18 transitions. [2020-04-18 15:28:06,820 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:06,865 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:28:06,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:28:06,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:28:06,866 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 5 states. [2020-04-18 15:28:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:06,888 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-04-18 15:28:06,889 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-04-18 15:28:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:28:06,889 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:28:06,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:06,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1603391338, now seen corresponding path program 4 times [2020-04-18 15:28:06,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:06,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230859400] [2020-04-18 15:28:06,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:06,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230859400] [2020-04-18 15:28:06,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:06,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:28:06,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:06,967 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:06,971 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:28:06,971 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:06,984 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:28:06,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:28:06,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:28:06,990 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-04-18 15:28:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,011 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-04-18 15:28:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-04-18 15:28:07,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:28:07,012 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1967850403] [2020-04-18 15:28:07,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:28:07,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:28:07,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1967850403] [2020-04-18 15:28:07,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:28:07,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:28:07,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:28:07,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:28:07,014 INFO L87 Difference]: Start difference. First operand 182 states and 481 transitions. Second operand 7 states. [2020-04-18 15:28:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,076 INFO L93 Difference]: Finished difference Result 218 states and 556 transitions. [2020-04-18 15:28:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:28:07,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-04-18 15:28:07,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:28:07,078 INFO L225 Difference]: With dead ends: 218 [2020-04-18 15:28:07,079 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 15:28:07,079 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:28:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 15:28:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 15:28:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 15:28:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 15:28:07,091 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 15:28:07,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:28:07,091 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 15:28:07,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:28:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 15:28:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:28:07,093 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:28:07,094 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:28:07,094 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:28:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-18 15:28:07,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:28:07,096 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2034421915] [2020-04-18 15:28:07,097 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,097 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:28:07,098 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:28:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:28:07,098 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:28:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1834241260, now seen corresponding path program 2 times [2020-04-18 15:28:07,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:07,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795019037] [2020-04-18 15:28:07,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:07,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795019037] [2020-04-18 15:28:07,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:07,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:07,176 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:07,177 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,179 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:28:07,179 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:07,184 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:28:07,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:28:07,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:07,185 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:28:07,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,188 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:28:07,189 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:28:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:28:07,189 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:28:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 3 times [2020-04-18 15:28:07,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:07,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293736797] [2020-04-18 15:28:07,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:07,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293736797] [2020-04-18 15:28:07,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:07,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:07,268 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:07,270 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,273 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:28:07,274 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:07,287 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:28:07,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:28:07,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:28:07,289 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 4 states. [2020-04-18 15:28:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,306 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:28:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:28:07,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:28:07,308 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2034421915] [2020-04-18 15:28:07,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:28:07,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:28:07,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2034421915] [2020-04-18 15:28:07,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:28:07,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:28:07,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:28:07,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:28:07,310 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 5 states. [2020-04-18 15:28:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,390 INFO L93 Difference]: Finished difference Result 165 states and 377 transitions. [2020-04-18 15:28:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 15:28:07,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 15:28:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:28:07,392 INFO L225 Difference]: With dead ends: 165 [2020-04-18 15:28:07,392 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 15:28:07,393 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:28:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 15:28:07,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 15:28:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 15:28:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 284 transitions. [2020-04-18 15:28:07,410 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 284 transitions. Word has length 11 [2020-04-18 15:28:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:28:07,410 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 284 transitions. [2020-04-18 15:28:07,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:28:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 284 transitions. [2020-04-18 15:28:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:28:07,412 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:28:07,412 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:28:07,412 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:28:07,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-18 15:28:07,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:28:07,413 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [463281298] [2020-04-18 15:28:07,415 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,416 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 64 transitions. [2020-04-18 15:28:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 15:28:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:28:07,417 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:28:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1026920870, now seen corresponding path program 2 times [2020-04-18 15:28:07,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:07,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973347269] [2020-04-18 15:28:07,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:07,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973347269] [2020-04-18 15:28:07,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:07,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:07,460 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:07,461 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,463 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:28:07,464 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:07,469 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:28:07,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:28:07,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:07,470 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-04-18 15:28:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,474 INFO L93 Difference]: Finished difference Result 40 states and 67 transitions. [2020-04-18 15:28:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2020-04-18 15:28:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:28:07,475 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:28:07,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1026922250, now seen corresponding path program 3 times [2020-04-18 15:28:07,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:07,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217241839] [2020-04-18 15:28:07,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:07,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217241839] [2020-04-18 15:28:07,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:07,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:07,542 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:07,544 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,547 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 15:28:07,547 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:07,559 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:28:07,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:28:07,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:28:07,560 INFO L87 Difference]: Start difference. First operand 40 states and 67 transitions. Second operand 4 states. [2020-04-18 15:28:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,579 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 15:28:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 15:28:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:28:07,580 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:28:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 4 times [2020-04-18 15:28:07,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:07,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878912741] [2020-04-18 15:28:07,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:07,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878912741] [2020-04-18 15:28:07,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:07,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:28:07,657 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:07,658 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,660 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 15:28:07,661 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:07,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:28:07,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:28:07,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:28:07,697 INFO L87 Difference]: Start difference. First operand 45 states and 71 transitions. Second operand 6 states. [2020-04-18 15:28:07,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,722 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2020-04-18 15:28:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2020-04-18 15:28:07,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:28:07,723 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [463281298] [2020-04-18 15:28:07,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:28:07,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:28:07,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [463281298] [2020-04-18 15:28:07,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:28:07,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:28:07,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:28:07,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:28:07,724 INFO L87 Difference]: Start difference. First operand 125 states and 284 transitions. Second operand 7 states. [2020-04-18 15:28:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,829 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 15:28:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:28:07,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 15:28:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:28:07,836 INFO L225 Difference]: With dead ends: 122 [2020-04-18 15:28:07,837 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 15:28:07,837 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:28:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 15:28:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 15:28:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 15:28:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 15:28:07,842 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 12 [2020-04-18 15:28:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:28:07,842 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 15:28:07,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:28:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 15:28:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:28:07,843 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:28:07,843 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:28:07,843 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:28:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-18 15:28:07,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:28:07,844 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [424482154] [2020-04-18 15:28:07,845 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,846 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 15:28:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 15:28:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:28:07,847 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:28:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,848 INFO L82 PathProgramCache]: Analyzing trace with hash 971527177, now seen corresponding path program 2 times [2020-04-18 15:28:07,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:07,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608441980] [2020-04-18 15:28:07,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:07,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608441980] [2020-04-18 15:28:07,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:07,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:07,894 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:07,895 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,898 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 32 transitions. [2020-04-18 15:28:07,898 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:07,907 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:28:07,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:28:07,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:07,908 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 15:28:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:07,913 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 15:28:07,913 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 15:28:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:28:07,914 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:28:07,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:07,917 INFO L82 PathProgramCache]: Analyzing trace with hash 970144267, now seen corresponding path program 3 times [2020-04-18 15:28:07,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:07,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541251497] [2020-04-18 15:28:07,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:07,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541251497] [2020-04-18 15:28:07,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:07,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:28:07,973 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:07,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:07,977 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:28:07,978 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:07,995 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:28:07,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:28:07,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:28:07,997 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 4 states. [2020-04-18 15:28:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:08,025 INFO L93 Difference]: Finished difference Result 89 states and 160 transitions. [2020-04-18 15:28:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 160 transitions. [2020-04-18 15:28:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:28:08,026 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:28:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1873050359, now seen corresponding path program 4 times [2020-04-18 15:28:08,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:08,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724705959] [2020-04-18 15:28:08,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:08,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724705959] [2020-04-18 15:28:08,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:08,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:28:08,092 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:08,094 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:08,099 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 36 transitions. [2020-04-18 15:28:08,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:08,134 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:28:08,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:28:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:28:08,135 INFO L87 Difference]: Start difference. First operand 89 states and 160 transitions. Second operand 6 states. [2020-04-18 15:28:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:08,186 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 15:28:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 15:28:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:28:08,187 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:28:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 5 times [2020-04-18 15:28:08,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:08,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246218397] [2020-04-18 15:28:08,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:08,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246218397] [2020-04-18 15:28:08,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:08,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:28:08,280 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:08,281 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:08,284 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:28:08,284 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:08,309 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:28:08,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:28:08,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:28:08,310 INFO L87 Difference]: Start difference. First operand 91 states and 161 transitions. Second operand 7 states. [2020-04-18 15:28:08,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:08,357 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2020-04-18 15:28:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 161 transitions. [2020-04-18 15:28:08,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:28:08,358 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [424482154] [2020-04-18 15:28:08,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:28:08,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:28:08,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [424482154] [2020-04-18 15:28:08,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 15:28:08,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:28:08,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:28:08,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:28:08,359 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 8 states. [2020-04-18 15:28:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:08,462 INFO L93 Difference]: Finished difference Result 92 states and 190 transitions. [2020-04-18 15:28:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:28:08,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-04-18 15:28:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:28:08,463 INFO L225 Difference]: With dead ends: 92 [2020-04-18 15:28:08,463 INFO L226 Difference]: Without dead ends: 84 [2020-04-18 15:28:08,464 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:28:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-04-18 15:28:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-04-18 15:28:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-04-18 15:28:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 176 transitions. [2020-04-18 15:28:08,467 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 176 transitions. Word has length 14 [2020-04-18 15:28:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:28:08,468 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 176 transitions. [2020-04-18 15:28:08,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 15:28:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 176 transitions. [2020-04-18 15:28:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:08,468 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:28:08,469 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:28:08,469 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:28:08,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:08,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-18 15:28:08,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:28:08,470 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1174689699] [2020-04-18 15:28:08,470 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:08,476 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:28:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:28:08,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:08,480 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:28:08,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:08,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1057896634, now seen corresponding path program 2 times [2020-04-18 15:28:08,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:08,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627246677] [2020-04-18 15:28:08,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:08,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627246677] [2020-04-18 15:28:08,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:08,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:08,514 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:08,516 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:08,523 INFO L259 McrAutomatonBuilder]: Finished intersection with 52 states and 95 transitions. [2020-04-18 15:28:08,523 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:08,532 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:28:08,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:28:08,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:28:08,533 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:28:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:08,540 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 15:28:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 15:28:08,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:08,543 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:28:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash -508157784, now seen corresponding path program 3 times [2020-04-18 15:28:08,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:08,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90295508] [2020-04-18 15:28:08,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:08,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90295508] [2020-04-18 15:28:08,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:08,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:28:08,572 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:08,574 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:08,582 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 113 transitions. [2020-04-18 15:28:08,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:08,630 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 15:28:08,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:28:08,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:28:08,630 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 6 states. [2020-04-18 15:28:08,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:08,682 INFO L93 Difference]: Finished difference Result 448 states and 1122 transitions. [2020-04-18 15:28:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1122 transitions. [2020-04-18 15:28:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:08,684 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:28:08,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash 219088266, now seen corresponding path program 4 times [2020-04-18 15:28:08,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:08,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557852145] [2020-04-18 15:28:08,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:08,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557852145] [2020-04-18 15:28:08,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:08,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:28:08,712 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:08,713 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:08,719 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 83 transitions. [2020-04-18 15:28:08,719 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:08,795 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 15:28:08,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:28:08,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:28:08,796 INFO L87 Difference]: Start difference. First operand 448 states and 1122 transitions. Second operand 6 states. [2020-04-18 15:28:08,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:08,827 INFO L93 Difference]: Finished difference Result 670 states and 1595 transitions. [2020-04-18 15:28:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1595 transitions. [2020-04-18 15:28:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:08,830 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:28:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:08,830 INFO L82 PathProgramCache]: Analyzing trace with hash 273605796, now seen corresponding path program 5 times [2020-04-18 15:28:08,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:08,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286879482] [2020-04-18 15:28:08,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:08,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286879482] [2020-04-18 15:28:08,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:08,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:28:08,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:08,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:08,871 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 93 transitions. [2020-04-18 15:28:08,871 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:08,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:28:08,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:28:08,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:28:08,903 INFO L87 Difference]: Start difference. First operand 670 states and 1595 transitions. Second operand 4 states. [2020-04-18 15:28:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:08,938 INFO L93 Difference]: Finished difference Result 928 states and 2059 transitions. [2020-04-18 15:28:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 2059 transitions. [2020-04-18 15:28:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:08,941 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:28:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash -287452954, now seen corresponding path program 6 times [2020-04-18 15:28:08,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:08,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959017172] [2020-04-18 15:28:08,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:08,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959017172] [2020-04-18 15:28:08,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:08,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:28:08,976 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:08,977 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:08,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 81 transitions. [2020-04-18 15:28:08,982 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:09,037 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:28:09,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:28:09,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-04-18 15:28:09,038 INFO L87 Difference]: Start difference. First operand 928 states and 2059 transitions. Second operand 6 states. [2020-04-18 15:28:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:09,130 INFO L93 Difference]: Finished difference Result 998 states and 2142 transitions. [2020-04-18 15:28:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 2142 transitions. [2020-04-18 15:28:09,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:09,133 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:28:09,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:09,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1691795752, now seen corresponding path program 7 times [2020-04-18 15:28:09,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:09,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335903912] [2020-04-18 15:28:09,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:09,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335903912] [2020-04-18 15:28:09,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:09,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:28:09,205 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:09,206 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:09,210 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-04-18 15:28:09,211 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:09,282 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:28:09,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:28:09,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-04-18 15:28:09,283 INFO L87 Difference]: Start difference. First operand 998 states and 2142 transitions. Second operand 7 states. [2020-04-18 15:28:09,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:09,400 INFO L93 Difference]: Finished difference Result 1006 states and 2146 transitions. [2020-04-18 15:28:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 2146 transitions. [2020-04-18 15:28:09,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:09,403 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:28:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:09,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 8 times [2020-04-18 15:28:09,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:09,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126917629] [2020-04-18 15:28:09,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:09,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126917629] [2020-04-18 15:28:09,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:09,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:28:09,433 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:09,434 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:09,436 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-04-18 15:28:09,437 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:09,510 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:28:09,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:28:09,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2020-04-18 15:28:09,511 INFO L87 Difference]: Start difference. First operand 1006 states and 2146 transitions. Second operand 5 states. [2020-04-18 15:28:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:09,553 INFO L93 Difference]: Finished difference Result 1412 states and 2920 transitions. [2020-04-18 15:28:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2920 transitions. [2020-04-18 15:28:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:28:09,557 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 15:28:09,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:28:09,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 9 times [2020-04-18 15:28:09,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:28:09,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977731884] [2020-04-18 15:28:09,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:28:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:28:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:28:09,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977731884] [2020-04-18 15:28:09,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:28:09,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:28:09,589 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:28:09,590 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:28:09,593 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 21 transitions. [2020-04-18 15:28:09,593 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:28:09,618 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:28:09,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:28:09,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2020-04-18 15:28:09,619 INFO L87 Difference]: Start difference. First operand 1412 states and 2920 transitions. Second operand 4 states. [2020-04-18 15:28:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:09,655 INFO L93 Difference]: Finished difference Result 2075 states and 4253 transitions. [2020-04-18 15:28:09,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 4253 transitions. [2020-04-18 15:28:09,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:28:09,661 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1174689699] [2020-04-18 15:28:09,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:28:09,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:28:09,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1174689699] [2020-04-18 15:28:09,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 15:28:09,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:28:09,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 15:28:09,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-04-18 15:28:09,663 INFO L87 Difference]: Start difference. First operand 84 states and 176 transitions. Second operand 20 states. [2020-04-18 15:28:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:28:11,005 INFO L93 Difference]: Finished difference Result 152 states and 299 transitions. [2020-04-18 15:28:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-18 15:28:11,006 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2020-04-18 15:28:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:28:11,006 INFO L225 Difference]: With dead ends: 152 [2020-04-18 15:28:11,007 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:28:11,009 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=813, Invalid=4157, Unknown=0, NotChecked=0, Total=4970 [2020-04-18 15:28:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:28:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:28:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:28:11,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:28:11,010 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:28:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:28:11,011 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:28:11,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 15:28:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:28:11,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:28:11,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:28:11 BasicIcfg [2020-04-18 15:28:11,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:28:11,016 INFO L168 Benchmark]: Toolchain (without parser) took 8492.17 ms. Allocated memory was 145.2 MB in the beginning and 313.0 MB in the end (delta: 167.8 MB). Free memory was 100.7 MB in the beginning and 198.8 MB in the end (delta: -98.2 MB). Peak memory consumption was 69.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:28:11,016 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 15:28:11,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.86 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 98.6 MB in the beginning and 159.9 MB in the end (delta: -61.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-04-18 15:28:11,018 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.42 ms. Allocated memory is still 202.9 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:28:11,018 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:28:11,019 INFO L168 Benchmark]: RCFGBuilder took 482.54 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 134.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 15:28:11,019 INFO L168 Benchmark]: TraceAbstraction took 7116.08 ms. Allocated memory was 202.9 MB in the beginning and 313.0 MB in the end (delta: 110.1 MB). Free memory was 133.6 MB in the beginning and 198.8 MB in the end (delta: -65.3 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:28:11,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 794.86 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 98.6 MB in the beginning and 159.9 MB in the end (delta: -61.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.42 ms. Allocated memory is still 202.9 MB. Free memory was 159.9 MB in the beginning and 157.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.62 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.54 ms. Allocated memory is still 202.9 MB. Free memory was 155.9 MB in the beginning and 134.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7116.08 ms. Allocated memory was 202.9 MB in the beginning and 313.0 MB in the end (delta: 110.1 MB). Free memory was 133.6 MB in the beginning and 198.8 MB in the end (delta: -65.3 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 148 SDtfs, 327 SDslu, 537 SDs, 0 SdLazy, 612 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 456 GetRequests, 342 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1434 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...