/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:02:32,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:02:32,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:02:32,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:02:32,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:02:32,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:02:32,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:02:32,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:02:32,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:02:32,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:02:32,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:02:32,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:02:32,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:02:32,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:02:32,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:02:32,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:02:32,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:02:32,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:02:32,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:02:32,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:02:32,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:02:32,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:02:32,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:02:32,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:02:32,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:02:32,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:02:32,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:02:32,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:02:32,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:02:32,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:02:32,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:02:32,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:02:32,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:02:32,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:02:32,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:02:32,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:02:32,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:02:32,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:02:32,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:02:32,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:02:32,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:02:32,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:02:32,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:02:32,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:02:32,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:02:32,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:02:32,536 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:02:32,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:02:32,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:02:32,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:02:32,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:02:32,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:02:32,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:02:32,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:02:32,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:02:32,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:02:32,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:02:32,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:02:32,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:02:32,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:02:32,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:02:32,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:02:32,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:02:32,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:02:32,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:02:32,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:02:32,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:02:32,540 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:02:32,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:02:32,540 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:02:32,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:02:32,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:02:32,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:02:32,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:02:32,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:02:32,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:02:32,878 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:02:32,879 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-04-18 11:02:32,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba6666df/33729fd695c148d1881977f6d7984df7/FLAG9f9ae5b24 [2020-04-18 11:02:33,542 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:02:33,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.opt.i [2020-04-18 11:02:33,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba6666df/33729fd695c148d1881977f6d7984df7/FLAG9f9ae5b24 [2020-04-18 11:02:33,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba6666df/33729fd695c148d1881977f6d7984df7 [2020-04-18 11:02:33,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:02:33,880 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:02:33,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:02:33,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:02:33,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:02:33,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:02:33" (1/1) ... [2020-04-18 11:02:33,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0b026d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:33, skipping insertion in model container [2020-04-18 11:02:33,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:02:33" (1/1) ... [2020-04-18 11:02:33,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:02:33,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:02:34,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:02:34,430 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:02:34,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:02:34,578 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:02:34,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34 WrapperNode [2020-04-18 11:02:34,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:02:34,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:02:34,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:02:34,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:02:34,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:02:34,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:02:34,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:02:34,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:02:34,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (1/1) ... [2020-04-18 11:02:34,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:02:34,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:02:34,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:02:34,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:02:34,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (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 11:02:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:02:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:02:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:02:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:02:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:02:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:02:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:02:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:02:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:02:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:02:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 11:02:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 11:02:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:02:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:02:34,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:02:34,746 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 11:02:35,173 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:02:35,173 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:02:35,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:02:35 BoogieIcfgContainer [2020-04-18 11:02:35,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:02:35,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:02:35,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:02:35,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:02:35,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:02:33" (1/3) ... [2020-04-18 11:02:35,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d183b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:02:35, skipping insertion in model container [2020-04-18 11:02:35,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:02:34" (2/3) ... [2020-04-18 11:02:35,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d183b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:02:35, skipping insertion in model container [2020-04-18 11:02:35,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:02:35" (3/3) ... [2020-04-18 11:02:35,186 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_tso.opt.i [2020-04-18 11:02:35,197 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:02:35,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:02:35,204 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:02:35,205 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:02:35,235 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,236 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,236 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,236 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,237 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,237 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,238 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,238 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,238 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,238 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,239 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,239 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,240 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,240 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,241 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,241 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,241 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,241 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,242 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,242 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,242 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,243 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,243 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,243 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,247 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,248 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,248 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,248 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,254 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,254 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,254 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,254 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,256 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,257 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,257 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,257 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,260 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,260 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,260 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,260 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:02:35,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 11:02:35,295 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:02:35,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:02:35,295 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:02:35,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:02:35,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:02:35,296 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:02:35,296 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:02:35,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:02:35,311 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 182 flow [2020-04-18 11:02:35,313 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 11:02:35,359 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-04-18 11:02:35,359 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:02:35,364 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 11:02:35,368 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 182 flow [2020-04-18 11:02:35,391 INFO L129 PetriNetUnfolder]: 2/77 cut-off events. [2020-04-18 11:02:35,391 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:02:35,392 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 2/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 11:02:35,395 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 11:02:35,396 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:02:37,244 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-04-18 11:02:37,529 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3093 [2020-04-18 11:02:37,529 INFO L214 etLargeBlockEncoding]: Total number of compositions: 65 [2020-04-18 11:02:37,536 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2020-04-18 11:02:37,589 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-04-18 11:02:37,591 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-04-18 11:02:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:02:37,601 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:37,602 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:37,602 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 1 times [2020-04-18 11:02:37,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:37,616 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1022136456] [2020-04-18 11:02:37,632 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:37,645 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:02:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:02:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:02:37,647 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:37,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2005095105, now seen corresponding path program 2 times [2020-04-18 11:02:37,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:37,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790314480] [2020-04-18 11:02:37,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:37,912 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 11:02:37,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790314480] [2020-04-18 11:02:37,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:37,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:02:37,915 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:37,916 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:37,920 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:02:37,920 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:37,927 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:37,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:37,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:37,933 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-04-18 11:02:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:37,936 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:02:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:02:37,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:37,937 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1022136456] [2020-04-18 11:02:37,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:37,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:02:37,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1022136456] [2020-04-18 11:02:37,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:02:37,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:37,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:37,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:37,945 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-04-18 11:02:37,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:37,992 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-04-18 11:02:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:02:37,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 11:02:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:38,023 INFO L225 Difference]: With dead ends: 670 [2020-04-18 11:02:38,024 INFO L226 Difference]: Without dead ends: 526 [2020-04-18 11:02:38,025 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 11:02:38,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-04-18 11:02:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-04-18 11:02:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-04-18 11:02:38,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-04-18 11:02:38,150 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-04-18 11:02:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:38,151 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-04-18 11:02:38,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:02:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-04-18 11:02:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:02:38,153 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:38,154 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:38,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:38,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 1 times [2020-04-18 11:02:38,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:38,155 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1487930238] [2020-04-18 11:02:38,155 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:38,156 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 19 transitions. [2020-04-18 11:02:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 11:02:38,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:02:38,157 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:38,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:38,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2027599793, now seen corresponding path program 2 times [2020-04-18 11:02:38,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:38,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666830462] [2020-04-18 11:02:38,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:38,272 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 11:02:38,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666830462] [2020-04-18 11:02:38,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:38,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:38,277 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:38,278 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:38,282 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-04-18 11:02:38,283 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:38,337 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:38,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:38,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:02:38,337 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2020-04-18 11:02:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:38,356 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-04-18 11:02:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-04-18 11:02:38,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:38,357 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1487930238] [2020-04-18 11:02:38,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:38,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:38,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1487930238] [2020-04-18 11:02:38,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:02:38,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:38,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:38,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:38,360 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 5 states. [2020-04-18 11:02:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:38,398 INFO L93 Difference]: Finished difference Result 682 states and 2180 transitions. [2020-04-18 11:02:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:02:38,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 11:02:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:38,403 INFO L225 Difference]: With dead ends: 682 [2020-04-18 11:02:38,403 INFO L226 Difference]: Without dead ends: 394 [2020-04-18 11:02:38,405 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-04-18 11:02:38,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2020-04-18 11:02:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-04-18 11:02:38,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2020-04-18 11:02:38,427 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 11 [2020-04-18 11:02:38,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:38,427 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2020-04-18 11:02:38,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:02:38,428 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2020-04-18 11:02:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:02:38,430 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:38,430 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:38,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:38,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 1 times [2020-04-18 11:02:38,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:38,431 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1186690138] [2020-04-18 11:02:38,432 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:38,432 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-04-18 11:02:38,433 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 11:02:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:02:38,433 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:38,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1004375926, now seen corresponding path program 2 times [2020-04-18 11:02:38,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:38,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30263113] [2020-04-18 11:02:38,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:38,503 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 11:02:38,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30263113] [2020-04-18 11:02:38,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:38,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:02:38,505 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:38,506 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:38,508 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-04-18 11:02:38,509 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:38,512 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:38,513 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 11:02:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:38,513 INFO L93 Difference]: Finished difference Result 28 states and 46 transitions. [2020-04-18 11:02:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 46 transitions. [2020-04-18 11:02:38,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:38,514 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1186690138] [2020-04-18 11:02:38,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:38,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:02:38,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1186690138] [2020-04-18 11:02:38,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:02:38,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:38,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:38,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:02:38,516 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand 3 states. [2020-04-18 11:02:38,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:38,533 INFO L93 Difference]: Finished difference Result 376 states and 1155 transitions. [2020-04-18 11:02:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:02:38,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 11:02:38,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:38,539 INFO L225 Difference]: With dead ends: 376 [2020-04-18 11:02:38,540 INFO L226 Difference]: Without dead ends: 376 [2020-04-18 11:02:38,540 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 11:02:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-04-18 11:02:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-04-18 11:02:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-04-18 11:02:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1155 transitions. [2020-04-18 11:02:38,554 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1155 transitions. Word has length 12 [2020-04-18 11:02:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:38,554 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 1155 transitions. [2020-04-18 11:02:38,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:02:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1155 transitions. [2020-04-18 11:02:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:02:38,560 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:38,561 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:38,561 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1070016734, now seen corresponding path program 1 times [2020-04-18 11:02:38,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:38,562 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [357238544] [2020-04-18 11:02:38,563 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:38,564 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 116 transitions. [2020-04-18 11:02:38,568 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 11:02:38,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:02:38,569 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:38,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:38,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1070016734, now seen corresponding path program 2 times [2020-04-18 11:02:38,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:38,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543663840] [2020-04-18 11:02:38,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:38,677 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 11:02:38,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543663840] [2020-04-18 11:02:38,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:38,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:38,679 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:38,683 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:38,689 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 11:02:38,689 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:38,810 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:38,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:38,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:38,811 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 7 states. [2020-04-18 11:02:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:38,825 INFO L93 Difference]: Finished difference Result 54 states and 116 transitions. [2020-04-18 11:02:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 116 transitions. [2020-04-18 11:02:38,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:38,827 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [357238544] [2020-04-18 11:02:38,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:38,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:38,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [357238544] [2020-04-18 11:02:38,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 11:02:38,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:38,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:38,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:38,829 INFO L87 Difference]: Start difference. First operand 376 states and 1155 transitions. Second operand 7 states. [2020-04-18 11:02:38,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:38,878 INFO L93 Difference]: Finished difference Result 526 states and 1582 transitions. [2020-04-18 11:02:38,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 11:02:38,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 11:02:38,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:38,881 INFO L225 Difference]: With dead ends: 526 [2020-04-18 11:02:38,882 INFO L226 Difference]: Without dead ends: 286 [2020-04-18 11:02:38,883 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:38,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-04-18 11:02:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2020-04-18 11:02:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-04-18 11:02:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 851 transitions. [2020-04-18 11:02:38,894 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 851 transitions. Word has length 13 [2020-04-18 11:02:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:38,894 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 851 transitions. [2020-04-18 11:02:38,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 11:02:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 851 transitions. [2020-04-18 11:02:38,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:38,895 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:38,895 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:38,895 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:38,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1152221153, now seen corresponding path program 1 times [2020-04-18 11:02:38,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:38,897 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [710591209] [2020-04-18 11:02:38,898 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:38,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 172 transitions. [2020-04-18 11:02:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 11:02:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:38,904 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:38,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:38,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1152221153, now seen corresponding path program 2 times [2020-04-18 11:02:38,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:38,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738656486] [2020-04-18 11:02:38,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:38,971 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 11:02:38,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738656486] [2020-04-18 11:02:38,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:38,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:38,973 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:38,974 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:38,978 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 42 transitions. [2020-04-18 11:02:38,978 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:39,021 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:39,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:39,022 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 6 states. [2020-04-18 11:02:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:39,061 INFO L93 Difference]: Finished difference Result 88 states and 189 transitions. [2020-04-18 11:02:39,061 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 189 transitions. [2020-04-18 11:02:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:39,062 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:39,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:39,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1189219793, now seen corresponding path program 3 times [2020-04-18 11:02:39,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:39,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97046226] [2020-04-18 11:02:39,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:39,128 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 11:02:39,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97046226] [2020-04-18 11:02:39,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:39,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:39,130 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:39,134 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:39,140 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 72 transitions. [2020-04-18 11:02:39,140 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:39,353 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:39,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:39,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:39,354 INFO L87 Difference]: Start difference. First operand 88 states and 189 transitions. Second operand 7 states. [2020-04-18 11:02:39,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:39,392 INFO L93 Difference]: Finished difference Result 90 states and 190 transitions. [2020-04-18 11:02:39,392 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 190 transitions. [2020-04-18 11:02:39,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:39,393 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [710591209] [2020-04-18 11:02:39,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:39,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:02:39,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [710591209] [2020-04-18 11:02:39,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:02:39,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:39,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:02:39,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:02:39,394 INFO L87 Difference]: Start difference. First operand 286 states and 851 transitions. Second operand 11 states. [2020-04-18 11:02:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:39,471 INFO L93 Difference]: Finished difference Result 458 states and 1291 transitions. [2020-04-18 11:02:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:02:39,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-04-18 11:02:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:39,473 INFO L225 Difference]: With dead ends: 458 [2020-04-18 11:02:39,474 INFO L226 Difference]: Without dead ends: 250 [2020-04-18 11:02:39,474 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:02:39,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-04-18 11:02:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 226. [2020-04-18 11:02:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 11:02:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 619 transitions. [2020-04-18 11:02:39,482 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 619 transitions. Word has length 14 [2020-04-18 11:02:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:39,483 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 619 transitions. [2020-04-18 11:02:39,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:02:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 619 transitions. [2020-04-18 11:02:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:39,484 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:39,484 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:39,484 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:39,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 1 times [2020-04-18 11:02:39,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:39,486 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1458358103] [2020-04-18 11:02:39,486 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:39,487 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 192 transitions. [2020-04-18 11:02:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 11:02:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:39,489 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:39,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1189219835, now seen corresponding path program 2 times [2020-04-18 11:02:39,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:39,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349626927] [2020-04-18 11:02:39,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:39,525 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 11:02:39,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349626927] [2020-04-18 11:02:39,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:39,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:39,526 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:39,528 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:39,532 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 72 transitions. [2020-04-18 11:02:39,532 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:39,612 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:39,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:39,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:39,612 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 7 states. [2020-04-18 11:02:39,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:39,636 INFO L93 Difference]: Finished difference Result 90 states and 212 transitions. [2020-04-18 11:02:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 212 transitions. [2020-04-18 11:02:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:02:39,637 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:39,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1162350155, now seen corresponding path program 3 times [2020-04-18 11:02:39,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:39,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920877126] [2020-04-18 11:02:39,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:39,703 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 11:02:39,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920877126] [2020-04-18 11:02:39,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:39,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:39,704 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:39,705 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:39,710 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 54 transitions. [2020-04-18 11:02:39,710 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:39,733 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:39,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:39,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:39,734 INFO L87 Difference]: Start difference. First operand 90 states and 212 transitions. Second operand 4 states. [2020-04-18 11:02:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:39,752 INFO L93 Difference]: Finished difference Result 90 states and 212 transitions. [2020-04-18 11:02:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 212 transitions. [2020-04-18 11:02:39,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:39,753 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1458358103] [2020-04-18 11:02:39,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:39,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:39,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1458358103] [2020-04-18 11:02:39,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 11:02:39,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:39,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:02:39,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:02:39,755 INFO L87 Difference]: Start difference. First operand 226 states and 619 transitions. Second operand 9 states. [2020-04-18 11:02:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:39,937 INFO L93 Difference]: Finished difference Result 287 states and 728 transitions. [2020-04-18 11:02:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 11:02:39,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 11:02:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:39,940 INFO L225 Difference]: With dead ends: 287 [2020-04-18 11:02:39,940 INFO L226 Difference]: Without dead ends: 206 [2020-04-18 11:02:39,940 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:02:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-04-18 11:02:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-04-18 11:02:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-04-18 11:02:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 530 transitions. [2020-04-18 11:02:39,949 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 530 transitions. Word has length 14 [2020-04-18 11:02:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:39,950 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 530 transitions. [2020-04-18 11:02:39,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 11:02:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 530 transitions. [2020-04-18 11:02:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:39,951 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:39,951 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:39,951 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:39,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 1 times [2020-04-18 11:02:39,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:39,952 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2070125556] [2020-04-18 11:02:39,953 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:39,955 INFO L259 McrAutomatonBuilder]: Finished intersection with 102 states and 268 transitions. [2020-04-18 11:02:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-04-18 11:02:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:39,959 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1788890552, now seen corresponding path program 2 times [2020-04-18 11:02:39,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:39,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055092861] [2020-04-18 11:02:39,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:40,009 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 11:02:40,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055092861] [2020-04-18 11:02:40,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:40,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:40,010 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:40,011 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:40,017 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 73 transitions. [2020-04-18 11:02:40,017 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:40,093 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:40,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:40,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:40,094 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 7 states. [2020-04-18 11:02:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:40,116 INFO L93 Difference]: Finished difference Result 126 states and 320 transitions. [2020-04-18 11:02:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 320 transitions. [2020-04-18 11:02:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:40,117 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:40,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:40,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1673122304, now seen corresponding path program 3 times [2020-04-18 11:02:40,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:40,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140977442] [2020-04-18 11:02:40,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:40,187 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 11:02:40,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140977442] [2020-04-18 11:02:40,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:40,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:40,188 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:40,190 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:40,195 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 69 transitions. [2020-04-18 11:02:40,195 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:40,221 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:40,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:40,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:40,222 INFO L87 Difference]: Start difference. First operand 126 states and 320 transitions. Second operand 4 states. [2020-04-18 11:02:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:40,247 INFO L93 Difference]: Finished difference Result 150 states and 364 transitions. [2020-04-18 11:02:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-04-18 11:02:40,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:02:40,248 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:40,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1647463604, now seen corresponding path program 4 times [2020-04-18 11:02:40,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:40,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523094951] [2020-04-18 11:02:40,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:40,309 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 11:02:40,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523094951] [2020-04-18 11:02:40,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:40,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:40,310 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:40,313 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:40,321 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 59 transitions. [2020-04-18 11:02:40,322 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:40,338 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:02:40,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:40,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:40,339 INFO L87 Difference]: Start difference. First operand 150 states and 364 transitions. Second operand 5 states. [2020-04-18 11:02:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:40,369 INFO L93 Difference]: Finished difference Result 150 states and 364 transitions. [2020-04-18 11:02:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 364 transitions. [2020-04-18 11:02:40,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:40,370 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2070125556] [2020-04-18 11:02:40,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:40,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:02:40,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2070125556] [2020-04-18 11:02:40,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 11:02:40,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:02:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-04-18 11:02:40,372 INFO L87 Difference]: Start difference. First operand 206 states and 530 transitions. Second operand 10 states. [2020-04-18 11:02:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:40,599 INFO L93 Difference]: Finished difference Result 227 states and 530 transitions. [2020-04-18 11:02:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 11:02:40,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-04-18 11:02:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:40,601 INFO L225 Difference]: With dead ends: 227 [2020-04-18 11:02:40,601 INFO L226 Difference]: Without dead ends: 162 [2020-04-18 11:02:40,602 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-04-18 11:02:40,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-04-18 11:02:40,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-04-18 11:02:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-04-18 11:02:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 369 transitions. [2020-04-18 11:02:40,608 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 369 transitions. Word has length 15 [2020-04-18 11:02:40,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:40,609 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 369 transitions. [2020-04-18 11:02:40,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 11:02:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 369 transitions. [2020-04-18 11:02:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:40,610 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:40,610 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:40,610 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:40,610 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 1 times [2020-04-18 11:02:40,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:40,611 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1521998205] [2020-04-18 11:02:40,611 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:40,615 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 422 transitions. [2020-04-18 11:02:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-04-18 11:02:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:40,621 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:40,621 INFO L82 PathProgramCache]: Analyzing trace with hash 378967974, now seen corresponding path program 2 times [2020-04-18 11:02:40,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:40,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670225213] [2020-04-18 11:02:40,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:40,659 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 11:02:40,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670225213] [2020-04-18 11:02:40,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:40,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:40,661 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:40,662 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:40,668 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2020-04-18 11:02:40,668 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:40,768 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:02:40,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:40,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:02:40,769 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 7 states. [2020-04-18 11:02:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:40,796 INFO L93 Difference]: Finished difference Result 186 states and 506 transitions. [2020-04-18 11:02:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 506 transitions. [2020-04-18 11:02:40,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:40,798 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:40,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:40,798 INFO L82 PathProgramCache]: Analyzing trace with hash 327184110, now seen corresponding path program 3 times [2020-04-18 11:02:40,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:40,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370433212] [2020-04-18 11:02:40,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:40,891 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 11:02:40,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370433212] [2020-04-18 11:02:40,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:40,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:02:40,894 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:40,896 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:40,906 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 79 transitions. [2020-04-18 11:02:40,906 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:40,938 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:40,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:02:40,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:40,939 INFO L87 Difference]: Start difference. First operand 186 states and 506 transitions. Second operand 4 states. [2020-04-18 11:02:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:40,974 INFO L93 Difference]: Finished difference Result 242 states and 626 transitions. [2020-04-18 11:02:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 626 transitions. [2020-04-18 11:02:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:40,976 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:40,976 INFO L82 PathProgramCache]: Analyzing trace with hash -468235590, now seen corresponding path program 4 times [2020-04-18 11:02:40,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:40,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601874682] [2020-04-18 11:02:40,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:41,070 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 11:02:41,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601874682] [2020-04-18 11:02:41,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:41,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:41,072 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:41,075 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:41,083 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 69 transitions. [2020-04-18 11:02:41,083 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:41,100 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:02:41,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:41,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:41,102 INFO L87 Difference]: Start difference. First operand 242 states and 626 transitions. Second operand 5 states. [2020-04-18 11:02:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:41,158 INFO L93 Difference]: Finished difference Result 254 states and 642 transitions. [2020-04-18 11:02:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2020-04-18 11:02:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:02:41,159 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:02:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:41,159 INFO L82 PathProgramCache]: Analyzing trace with hash -469082430, now seen corresponding path program 5 times [2020-04-18 11:02:41,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:41,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044009828] [2020-04-18 11:02:41,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:41,244 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 11:02:41,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044009828] [2020-04-18 11:02:41,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:41,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:41,246 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:41,247 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:41,252 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2020-04-18 11:02:41,253 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:41,269 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:02:41,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:41,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:02:41,269 INFO L87 Difference]: Start difference. First operand 254 states and 642 transitions. Second operand 6 states. [2020-04-18 11:02:41,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:41,316 INFO L93 Difference]: Finished difference Result 254 states and 642 transitions. [2020-04-18 11:02:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 642 transitions. [2020-04-18 11:02:41,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:41,317 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1521998205] [2020-04-18 11:02:41,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:41,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:02:41,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1521998205] [2020-04-18 11:02:41,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 11:02:41,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:41,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 11:02:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:02:41,319 INFO L87 Difference]: Start difference. First operand 162 states and 369 transitions. Second operand 11 states. [2020-04-18 11:02:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:41,518 INFO L93 Difference]: Finished difference Result 158 states and 337 transitions. [2020-04-18 11:02:41,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 11:02:41,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-04-18 11:02:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:41,520 INFO L225 Difference]: With dead ends: 158 [2020-04-18 11:02:41,520 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 11:02:41,521 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:02:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 11:02:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 11:02:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 11:02:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 265 transitions. [2020-04-18 11:02:41,525 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 265 transitions. Word has length 16 [2020-04-18 11:02:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:41,526 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 265 transitions. [2020-04-18 11:02:41,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 11:02:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 265 transitions. [2020-04-18 11:02:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:41,526 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:41,527 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:41,527 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:41,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:41,527 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 1 times [2020-04-18 11:02:41,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:41,528 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [698079670] [2020-04-18 11:02:41,528 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:41,533 INFO L259 McrAutomatonBuilder]: Finished intersection with 282 states and 876 transitions. [2020-04-18 11:02:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2020-04-18 11:02:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:41,537 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:41,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:41,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1331930345, now seen corresponding path program 2 times [2020-04-18 11:02:41,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:41,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966494232] [2020-04-18 11:02:41,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:41,570 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 11:02:41,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966494232] [2020-04-18 11:02:41,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:41,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:41,571 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:41,573 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:41,581 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 74 transitions. [2020-04-18 11:02:41,581 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:41,623 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:41,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:41,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:02:41,624 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 6 states. [2020-04-18 11:02:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:41,677 INFO L93 Difference]: Finished difference Result 492 states and 1409 transitions. [2020-04-18 11:02:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1409 transitions. [2020-04-18 11:02:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:41,680 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:41,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1281016031, now seen corresponding path program 3 times [2020-04-18 11:02:41,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:41,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332072845] [2020-04-18 11:02:41,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:41,711 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 11:02:41,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332072845] [2020-04-18 11:02:41,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:41,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:41,713 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:41,715 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:41,720 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 55 transitions. [2020-04-18 11:02:41,720 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:41,728 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:41,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:41,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:02:41,728 INFO L87 Difference]: Start difference. First operand 492 states and 1409 transitions. Second operand 3 states. [2020-04-18 11:02:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:41,734 INFO L93 Difference]: Finished difference Result 558 states and 1537 transitions. [2020-04-18 11:02:41,734 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 1537 transitions. [2020-04-18 11:02:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:41,736 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:41,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1280146481, now seen corresponding path program 4 times [2020-04-18 11:02:41,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:41,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683276717] [2020-04-18 11:02:41,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:41,786 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 11:02:41,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683276717] [2020-04-18 11:02:41,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:41,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:41,787 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:41,789 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:41,795 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 64 transitions. [2020-04-18 11:02:41,795 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:41,851 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:41,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:41,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:41,852 INFO L87 Difference]: Start difference. First operand 558 states and 1537 transitions. Second operand 6 states. [2020-04-18 11:02:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:41,948 INFO L93 Difference]: Finished difference Result 642 states and 1670 transitions. [2020-04-18 11:02:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1670 transitions. [2020-04-18 11:02:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:41,950 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:02:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:41,950 INFO L82 PathProgramCache]: Analyzing trace with hash 484726781, now seen corresponding path program 5 times [2020-04-18 11:02:41,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:41,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961486081] [2020-04-18 11:02:41,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:41,995 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 11:02:41,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961486081] [2020-04-18 11:02:41,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:41,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:02:41,996 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:41,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:42,003 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 60 transitions. [2020-04-18 11:02:42,003 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:42,041 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:42,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:42,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-04-18 11:02:42,042 INFO L87 Difference]: Start difference. First operand 642 states and 1670 transitions. Second operand 7 states. [2020-04-18 11:02:42,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:42,170 INFO L93 Difference]: Finished difference Result 654 states and 1680 transitions. [2020-04-18 11:02:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1680 transitions. [2020-04-18 11:02:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-18 11:02:42,172 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:02:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash 483879941, now seen corresponding path program 6 times [2020-04-18 11:02:42,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:42,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050005296] [2020-04-18 11:02:42,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:42,221 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 11:02:42,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050005296] [2020-04-18 11:02:42,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:42,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:02:42,222 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:42,224 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:42,229 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 58 transitions. [2020-04-18 11:02:42,229 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:42,260 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:42,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:02:42,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:02:42,261 INFO L87 Difference]: Start difference. First operand 654 states and 1680 transitions. Second operand 8 states. [2020-04-18 11:02:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:42,381 INFO L93 Difference]: Finished difference Result 654 states and 1680 transitions. [2020-04-18 11:02:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1680 transitions. [2020-04-18 11:02:42,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:42,383 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [698079670] [2020-04-18 11:02:42,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:42,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:02:42,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [698079670] [2020-04-18 11:02:42,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 11:02:42,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:42,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 11:02:42,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-04-18 11:02:42,384 INFO L87 Difference]: Start difference. First operand 125 states and 265 transitions. Second operand 13 states. [2020-04-18 11:02:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:42,634 INFO L93 Difference]: Finished difference Result 120 states and 253 transitions. [2020-04-18 11:02:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 11:02:42,635 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-04-18 11:02:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:42,636 INFO L225 Difference]: With dead ends: 120 [2020-04-18 11:02:42,636 INFO L226 Difference]: Without dead ends: 71 [2020-04-18 11:02:42,636 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-04-18 11:02:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-04-18 11:02:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-04-18 11:02:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-04-18 11:02:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 143 transitions. [2020-04-18 11:02:42,639 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 143 transitions. Word has length 18 [2020-04-18 11:02:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:42,639 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 143 transitions. [2020-04-18 11:02:42,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 11:02:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 143 transitions. [2020-04-18 11:02:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:42,640 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:02:42,640 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:02:42,640 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:02:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:42,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1087350585, now seen corresponding path program 1 times [2020-04-18 11:02:42,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:02:42,641 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [741422146] [2020-04-18 11:02:42,642 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:42,651 INFO L259 McrAutomatonBuilder]: Finished intersection with 562 states and 1890 transitions. [2020-04-18 11:02:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2020-04-18 11:02:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:42,657 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:02:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash 106505205, now seen corresponding path program 2 times [2020-04-18 11:02:42,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:42,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678537661] [2020-04-18 11:02:42,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:42,688 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 11:02:42,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678537661] [2020-04-18 11:02:42,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:42,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:42,689 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:42,691 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:42,700 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 88 transitions. [2020-04-18 11:02:42,701 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:42,721 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:42,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:42,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:02:42,721 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 5 states. [2020-04-18 11:02:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:42,751 INFO L93 Difference]: Finished difference Result 794 states and 2554 transitions. [2020-04-18 11:02:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 2554 transitions. [2020-04-18 11:02:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:42,754 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:02:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:42,754 INFO L82 PathProgramCache]: Analyzing trace with hash 36358109, now seen corresponding path program 3 times [2020-04-18 11:02:42,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:42,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194822893] [2020-04-18 11:02:42,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:42,815 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 11:02:42,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194822893] [2020-04-18 11:02:42,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:42,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:42,816 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:42,818 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:42,825 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 72 transitions. [2020-04-18 11:02:42,825 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:42,873 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:42,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:42,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:02:42,873 INFO L87 Difference]: Start difference. First operand 794 states and 2554 transitions. Second operand 6 states. [2020-04-18 11:02:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:42,918 INFO L93 Difference]: Finished difference Result 1564 states and 4759 transitions. [2020-04-18 11:02:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 4759 transitions. [2020-04-18 11:02:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:42,922 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:02:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:42,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1599267629, now seen corresponding path program 4 times [2020-04-18 11:02:42,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:42,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406348967] [2020-04-18 11:02:42,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:42,957 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 11:02:42,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406348967] [2020-04-18 11:02:42,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:42,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:42,958 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:42,960 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:42,966 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 55 transitions. [2020-04-18 11:02:42,966 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:42,977 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:02:42,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:02:42,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-04-18 11:02:42,977 INFO L87 Difference]: Start difference. First operand 1564 states and 4759 transitions. Second operand 3 states. [2020-04-18 11:02:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:42,987 INFO L93 Difference]: Finished difference Result 1850 states and 5475 transitions. [2020-04-18 11:02:42,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 5475 transitions. [2020-04-18 11:02:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:42,991 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:02:42,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:42,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1860062117, now seen corresponding path program 5 times [2020-04-18 11:02:42,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:42,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479512413] [2020-04-18 11:02:42,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:43,030 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 11:02:43,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479512413] [2020-04-18 11:02:43,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:43,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:02:43,031 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:43,033 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:43,040 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 64 transitions. [2020-04-18 11:02:43,040 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:43,109 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:02:43,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:02:43,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:02:43,110 INFO L87 Difference]: Start difference. First operand 1850 states and 5475 transitions. Second operand 6 states. [2020-04-18 11:02:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:43,233 INFO L93 Difference]: Finished difference Result 2251 states and 6283 transitions. [2020-04-18 11:02:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 6283 transitions. [2020-04-18 11:02:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:43,239 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:02:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1965909105, now seen corresponding path program 6 times [2020-04-18 11:02:43,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:43,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490774703] [2020-04-18 11:02:43,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:43,287 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 11:02:43,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490774703] [2020-04-18 11:02:43,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:43,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:02:43,288 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:43,290 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:43,296 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-04-18 11:02:43,296 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:43,337 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:43,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:43,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-04-18 11:02:43,338 INFO L87 Difference]: Start difference. First operand 2251 states and 6283 transitions. Second operand 7 states. [2020-04-18 11:02:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:43,530 INFO L93 Difference]: Finished difference Result 2355 states and 6427 transitions. [2020-04-18 11:02:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 6427 transitions. [2020-04-18 11:02:43,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:43,537 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:02:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:43,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1152160785, now seen corresponding path program 7 times [2020-04-18 11:02:43,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:43,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041953715] [2020-04-18 11:02:43,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:43,613 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 11:02:43,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041953715] [2020-04-18 11:02:43,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:43,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:02:43,615 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:43,616 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:43,623 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 60 transitions. [2020-04-18 11:02:43,623 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:43,665 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:02:43,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:02:43,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:02:43,666 INFO L87 Difference]: Start difference. First operand 2355 states and 6427 transitions. Second operand 8 states. [2020-04-18 11:02:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:43,867 INFO L93 Difference]: Finished difference Result 2367 states and 6435 transitions. [2020-04-18 11:02:43,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 6435 transitions. [2020-04-18 11:02:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:43,873 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 11:02:43,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:43,873 INFO L82 PathProgramCache]: Analyzing trace with hash 16625717, now seen corresponding path program 8 times [2020-04-18 11:02:43,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:43,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377382796] [2020-04-18 11:02:43,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:43,953 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 11:02:43,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377382796] [2020-04-18 11:02:43,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:43,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:43,954 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:43,955 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:43,962 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 58 transitions. [2020-04-18 11:02:43,962 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:44,031 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:02:44,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:02:44,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2020-04-18 11:02:44,032 INFO L87 Difference]: Start difference. First operand 2367 states and 6435 transitions. Second operand 5 states. [2020-04-18 11:02:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:44,073 INFO L93 Difference]: Finished difference Result 3755 states and 9942 transitions. [2020-04-18 11:02:44,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 9942 transitions. [2020-04-18 11:02:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-04-18 11:02:44,080 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 11:02:44,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:02:44,081 INFO L82 PathProgramCache]: Analyzing trace with hash 216357237, now seen corresponding path program 9 times [2020-04-18 11:02:44,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:02:44,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713193766] [2020-04-18 11:02:44,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:02:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:02:44,115 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 11:02:44,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713193766] [2020-04-18 11:02:44,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:02:44,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:02:44,116 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:02:44,117 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:02:44,128 INFO L259 McrAutomatonBuilder]: Finished intersection with 69 states and 125 transitions. [2020-04-18 11:02:44,128 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:02:44,323 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:02:44,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:02:44,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2020-04-18 11:02:44,324 INFO L87 Difference]: Start difference. First operand 3755 states and 9942 transitions. Second operand 7 states. [2020-04-18 11:02:44,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:44,380 INFO L93 Difference]: Finished difference Result 5235 states and 13539 transitions. [2020-04-18 11:02:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 13539 transitions. [2020-04-18 11:02:44,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:44,388 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [741422146] [2020-04-18 11:02:44,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:02:44,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:02:44,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [741422146] [2020-04-18 11:02:44,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 11:02:44,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:02:44,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 11:02:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2020-04-18 11:02:44,390 INFO L87 Difference]: Start difference. First operand 71 states and 143 transitions. Second operand 24 states. [2020-04-18 11:02:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:02:45,065 INFO L93 Difference]: Finished difference Result 70 states and 142 transitions. [2020-04-18 11:02:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 11:02:45,070 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 20 [2020-04-18 11:02:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:02:45,071 INFO L225 Difference]: With dead ends: 70 [2020-04-18 11:02:45,071 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:02:45,072 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=437, Invalid=2215, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 11:02:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:02:45,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:02:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:02:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:02:45,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-04-18 11:02:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:02:45,073 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:02:45,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 11:02:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:02:45,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:02:45,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:02:45 BasicIcfg [2020-04-18 11:02:45,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:02:45,079 INFO L168 Benchmark]: Toolchain (without parser) took 11220.35 ms. Allocated memory was 143.7 MB in the beginning and 360.2 MB in the end (delta: 216.5 MB). Free memory was 100.2 MB in the beginning and 119.7 MB in the end (delta: -19.5 MB). Peak memory consumption was 197.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:45,080 INFO L168 Benchmark]: CDTParser took 1.09 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:02:45,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.37 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 98.4 MB in the beginning and 158.1 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:45,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 201.9 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:45,081 INFO L168 Benchmark]: Boogie Preprocessor took 29.57 ms. Allocated memory is still 201.9 MB. Free memory was 156.1 MB in the beginning and 154.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:45,082 INFO L168 Benchmark]: RCFGBuilder took 502.93 ms. Allocated memory is still 201.9 MB. Free memory was 154.1 MB in the beginning and 130.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:45,082 INFO L168 Benchmark]: TraceAbstraction took 9898.32 ms. Allocated memory was 201.9 MB in the beginning and 360.2 MB in the end (delta: 158.3 MB). Free memory was 129.9 MB in the beginning and 119.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 168.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:02:45,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.37 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 98.4 MB in the beginning and 158.1 MB in the end (delta: -59.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 201.9 MB. Free memory was 158.1 MB in the beginning and 156.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.57 ms. Allocated memory is still 201.9 MB. Free memory was 156.1 MB in the beginning and 154.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 502.93 ms. Allocated memory is still 201.9 MB. Free memory was 154.1 MB in the beginning and 130.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9898.32 ms. Allocated memory was 201.9 MB in the beginning and 360.2 MB in the end (delta: 158.3 MB). Free memory was 129.9 MB in the beginning and 119.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 168.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 92 ProgramPointsBefore, 38 ProgramPointsAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 951 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 25 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 3093 CheckedPairsTotal, 65 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 212 SDtfs, 588 SDslu, 775 SDs, 0 SdLazy, 705 SolverSat, 219 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 493 SyntacticMatches, 4 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred 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, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 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...