/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:06:01,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:06:01,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:06:01,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:06:01,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:06:01,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:06:01,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:06:01,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:06:01,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:06:01,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:06:01,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:06:01,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:06:01,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:06:01,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:06:01,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:06:01,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:06:01,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:06:01,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:06:01,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:06:01,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:06:01,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:06:01,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:06:01,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:06:01,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:06:01,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:06:01,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:06:01,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:06:01,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:06:01,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:06:01,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:06:01,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:06:01,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:06:01,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:06:01,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:06:01,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:06:01,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:06:01,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:06:01,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:06:01,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:06:01,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:06:01,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:06:01,542 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-NoLbe-McrStrategy.epf [2020-04-18 20:06:01,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:06:01,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:06:01,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:06:01,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:06:01,584 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:06:01,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:06:01,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:06:01,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:06:01,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:06:01,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:06:01,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:06:01,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:06:01,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:06:01,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:06:01,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:06:01,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:06:01,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:06:01,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:06:01,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:06:01,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:06:01,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:06:01,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:06:01,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:06:01,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:06:01,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:06:01,588 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:06:01,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:06:01,589 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:06:01,589 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:06:01,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:06:01,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:06:01,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:06:01,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:06:01,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:06:01,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:06:01,930 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:06:01,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2020-04-18 20:06:02,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ed5b9ea/6bbafa2377e44c3db3e6a19001d2480b/FLAGfa2766598 [2020-04-18 20:06:02,634 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:06:02,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.opt.i [2020-04-18 20:06:02,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ed5b9ea/6bbafa2377e44c3db3e6a19001d2480b/FLAGfa2766598 [2020-04-18 20:06:02,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ed5b9ea/6bbafa2377e44c3db3e6a19001d2480b [2020-04-18 20:06:02,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:06:02,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:06:02,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:06:02,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:06:02,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:06:02,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:06:02" (1/1) ... [2020-04-18 20:06:02,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73db757b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:02, skipping insertion in model container [2020-04-18 20:06:02,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:06:02" (1/1) ... [2020-04-18 20:06:02,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:06:02,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:06:03,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:06:03,557 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:06:03,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:06:03,720 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:06:03,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03 WrapperNode [2020-04-18 20:06:03,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:06:03,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:06:03,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:06:03,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:06:03,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:06:03,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:06:03,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:06:03,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:06:03,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... [2020-04-18 20:06:03,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:06:03,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:06:03,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:06:03,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:06:03,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:06:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:06:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:06:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:06:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:06:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:06:03,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:06:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:06:03,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:06:03,888 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:06:03,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:06:03,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:06:03,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:06:03,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:06:03,890 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 20:06:04,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:06:04,279 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:06:04,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:06:04 BoogieIcfgContainer [2020-04-18 20:06:04,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:06:04,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:06:04,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:06:04,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:06:04,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:06:02" (1/3) ... [2020-04-18 20:06:04,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ce016e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:06:04, skipping insertion in model container [2020-04-18 20:06:04,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:06:03" (2/3) ... [2020-04-18 20:06:04,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ce016e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:06:04, skipping insertion in model container [2020-04-18 20:06:04,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:06:04" (3/3) ... [2020-04-18 20:06:04,293 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_rmo.opt.i [2020-04-18 20:06:04,304 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:06:04,305 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:06:04,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:06:04,313 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:06:04,340 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,340 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,341 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,341 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,342 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,342 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,342 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,343 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,343 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,343 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,343 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,344 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,344 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,344 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,345 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,345 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,345 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,345 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,350 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,350 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,350 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,350 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,356 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,357 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,357 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,357 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,364 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,364 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,364 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,365 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:06:04,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 20:06:04,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:06:04,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:06:04,397 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:06:04,397 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:06:04,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:06:04,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:06:04,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:06:04,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:06:04,421 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 20:06:05,030 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8473 states. [2020-04-18 20:06:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 8473 states. [2020-04-18 20:06:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 20:06:05,067 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:05,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:05,069 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:05,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:05,076 INFO L82 PathProgramCache]: Analyzing trace with hash 147192619, now seen corresponding path program 1 times [2020-04-18 20:06:05,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:05,084 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [243856804] [2020-04-18 20:06:05,102 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:05,121 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 20:06:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 20:06:05,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 20:06:05,124 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:05,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:05,125 INFO L82 PathProgramCache]: Analyzing trace with hash 147192619, now seen corresponding path program 2 times [2020-04-18 20:06:05,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:05,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392407444] [2020-04-18 20:06:05,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:05,564 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 20:06:05,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392407444] [2020-04-18 20:06:05,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:05,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:06:05,568 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:05,572 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:05,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2020-04-18 20:06:05,588 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:05,641 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:06:05,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:06:05,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:06:05,649 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-04-18 20:06:05,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:05,719 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2020-04-18 20:06:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 37 transitions. [2020-04-18 20:06:05,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:05,721 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [243856804] [2020-04-18 20:06:05,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:05,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:06:05,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [243856804] [2020-04-18 20:06:05,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:06:05,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:05,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:06:05,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:06:05,730 INFO L87 Difference]: Start difference. First operand 8473 states. Second operand 6 states. [2020-04-18 20:06:06,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:06,161 INFO L93 Difference]: Finished difference Result 8780 states and 29872 transitions. [2020-04-18 20:06:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:06:06,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 20:06:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:06,221 INFO L225 Difference]: With dead ends: 8780 [2020-04-18 20:06:06,221 INFO L226 Difference]: Without dead ends: 3996 [2020-04-18 20:06:06,229 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:06:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2020-04-18 20:06:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3996. [2020-04-18 20:06:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2020-04-18 20:06:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 13367 transitions. [2020-04-18 20:06:06,550 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 13367 transitions. Word has length 37 [2020-04-18 20:06:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:06,553 INFO L479 AbstractCegarLoop]: Abstraction has 3996 states and 13367 transitions. [2020-04-18 20:06:06,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:06:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 13367 transitions. [2020-04-18 20:06:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:06:06,572 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:06,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:06,579 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:06,580 INFO L82 PathProgramCache]: Analyzing trace with hash 996075595, now seen corresponding path program 1 times [2020-04-18 20:06:06,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:06,580 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1816448068] [2020-04-18 20:06:06,582 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:06,588 INFO L259 McrAutomatonBuilder]: Finished intersection with 122 states and 201 transitions. [2020-04-18 20:06:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-04-18 20:06:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 20:06:06,594 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:06,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash 996075595, now seen corresponding path program 2 times [2020-04-18 20:06:06,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:06,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694119708] [2020-04-18 20:06:06,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 20:06:06,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694119708] [2020-04-18 20:06:06,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:06,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:06,846 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:06,850 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:06,863 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 113 transitions. [2020-04-18 20:06:06,863 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:06,913 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 20:06:06,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:06,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:06:06,914 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 7 states. [2020-04-18 20:06:07,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:07,109 INFO L93 Difference]: Finished difference Result 122 states and 201 transitions. [2020-04-18 20:06:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2020-04-18 20:06:07,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:07,110 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1816448068] [2020-04-18 20:06:07,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:07,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:06:07,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1816448068] [2020-04-18 20:06:07,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:06:07,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:07,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:07,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-04-18 20:06:07,112 INFO L87 Difference]: Start difference. First operand 3996 states and 13367 transitions. Second operand 7 states. [2020-04-18 20:06:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:07,282 INFO L93 Difference]: Finished difference Result 3528 states and 11300 transitions. [2020-04-18 20:06:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:06:07,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 20:06:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:07,300 INFO L225 Difference]: With dead ends: 3528 [2020-04-18 20:06:07,300 INFO L226 Difference]: Without dead ends: 2412 [2020-04-18 20:06:07,302 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:06:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2020-04-18 20:06:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2412. [2020-04-18 20:06:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2020-04-18 20:06:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 7559 transitions. [2020-04-18 20:06:07,399 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 7559 transitions. Word has length 41 [2020-04-18 20:06:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:07,400 INFO L479 AbstractCegarLoop]: Abstraction has 2412 states and 7559 transitions. [2020-04-18 20:06:07,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:06:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 7559 transitions. [2020-04-18 20:06:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:06:07,408 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:07,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:07,408 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:07,409 INFO L82 PathProgramCache]: Analyzing trace with hash 799576525, now seen corresponding path program 1 times [2020-04-18 20:06:07,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:07,409 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1222775711] [2020-04-18 20:06:07,411 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:07,447 INFO L259 McrAutomatonBuilder]: Finished intersection with 462 states and 1133 transitions. [2020-04-18 20:06:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states. [2020-04-18 20:06:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 20:06:07,453 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:07,454 INFO L82 PathProgramCache]: Analyzing trace with hash 799576525, now seen corresponding path program 2 times [2020-04-18 20:06:07,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:07,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889553531] [2020-04-18 20:06:07,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:07,661 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 20:06:07,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889553531] [2020-04-18 20:06:07,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:07,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:06:07,662 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:07,668 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:07,711 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 259 transitions. [2020-04-18 20:06:07,711 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:07,767 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 20:06:07,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:06:07,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 20:06:07,769 INFO L87 Difference]: Start difference. First operand 462 states. Second operand 8 states. [2020-04-18 20:06:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:08,088 INFO L93 Difference]: Finished difference Result 462 states and 1133 transitions. [2020-04-18 20:06:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1133 transitions. [2020-04-18 20:06:08,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:08,090 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1222775711] [2020-04-18 20:06:08,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:08,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:06:08,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1222775711] [2020-04-18 20:06:08,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 20:06:08,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:06:08,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-04-18 20:06:08,092 INFO L87 Difference]: Start difference. First operand 2412 states and 7559 transitions. Second operand 8 states. [2020-04-18 20:06:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:08,246 INFO L93 Difference]: Finished difference Result 1764 states and 5336 transitions. [2020-04-18 20:06:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 20:06:08,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-04-18 20:06:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:08,256 INFO L225 Difference]: With dead ends: 1764 [2020-04-18 20:06:08,256 INFO L226 Difference]: Without dead ends: 1224 [2020-04-18 20:06:08,256 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-04-18 20:06:08,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-04-18 20:06:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2020-04-18 20:06:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-04-18 20:06:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 3599 transitions. [2020-04-18 20:06:08,295 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 3599 transitions. Word has length 45 [2020-04-18 20:06:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:08,296 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 3599 transitions. [2020-04-18 20:06:08,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 20:06:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 3599 transitions. [2020-04-18 20:06:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:08,301 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:06:08,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 20:06:08,305 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:06:08,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:08,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1836077105, now seen corresponding path program 1 times [2020-04-18 20:06:08,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:06:08,307 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2128318887] [2020-04-18 20:06:08,310 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:08,356 INFO L259 McrAutomatonBuilder]: Finished intersection with 1762 states and 5713 transitions. [2020-04-18 20:06:08,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states. [2020-04-18 20:06:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:08,377 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:06:08,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:08,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1836077105, now seen corresponding path program 2 times [2020-04-18 20:06:08,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:08,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566338772] [2020-04-18 20:06:08,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:08,588 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 20:06:08,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566338772] [2020-04-18 20:06:08,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:08,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:08,590 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:08,598 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:08,633 INFO L259 McrAutomatonBuilder]: Finished intersection with 182 states and 373 transitions. [2020-04-18 20:06:08,633 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:08,692 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 20:06:08,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:08,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:06:08,692 INFO L87 Difference]: Start difference. First operand 1762 states. Second operand 7 states. [2020-04-18 20:06:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:08,937 INFO L93 Difference]: Finished difference Result 2428 states and 7616 transitions. [2020-04-18 20:06:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 7616 transitions. [2020-04-18 20:06:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:08,945 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:06:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:08,946 INFO L82 PathProgramCache]: Analyzing trace with hash -447061139, now seen corresponding path program 3 times [2020-04-18 20:06:08,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:08,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041881853] [2020-04-18 20:06:08,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:09,190 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 20:06:09,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041881853] [2020-04-18 20:06:09,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:09,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:06:09,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:09,196 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:09,227 INFO L259 McrAutomatonBuilder]: Finished intersection with 208 states and 423 transitions. [2020-04-18 20:06:09,227 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:09,431 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 20:06:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:06:09,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2020-04-18 20:06:09,432 INFO L87 Difference]: Start difference. First operand 2428 states and 7616 transitions. Second operand 8 states. [2020-04-18 20:06:09,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:09,870 INFO L93 Difference]: Finished difference Result 2448 states and 7634 transitions. [2020-04-18 20:06:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 7634 transitions. [2020-04-18 20:06:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:09,879 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:06:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:09,879 INFO L82 PathProgramCache]: Analyzing trace with hash 350007119, now seen corresponding path program 4 times [2020-04-18 20:06:09,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:09,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121601480] [2020-04-18 20:06:09,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:09,971 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 20:06:09,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121601480] [2020-04-18 20:06:09,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:09,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:09,972 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:09,977 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:10,011 INFO L259 McrAutomatonBuilder]: Finished intersection with 226 states and 489 transitions. [2020-04-18 20:06:10,011 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:10,037 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:06:10,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:10,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2020-04-18 20:06:10,038 INFO L87 Difference]: Start difference. First operand 2448 states and 7634 transitions. Second operand 7 states. [2020-04-18 20:06:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:10,167 INFO L93 Difference]: Finished difference Result 2914 states and 8887 transitions. [2020-04-18 20:06:10,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 8887 transitions. [2020-04-18 20:06:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:10,174 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:06:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:10,174 INFO L82 PathProgramCache]: Analyzing trace with hash -242681937, now seen corresponding path program 5 times [2020-04-18 20:06:10,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:10,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746289740] [2020-04-18 20:06:10,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:10,359 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 20:06:10,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746289740] [2020-04-18 20:06:10,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:10,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:10,361 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:10,367 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:10,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 150 states and 301 transitions. [2020-04-18 20:06:10,394 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:10,430 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 20:06:10,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:10,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 20:06:10,431 INFO L87 Difference]: Start difference. First operand 2914 states and 8887 transitions. Second operand 7 states. [2020-04-18 20:06:10,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:10,718 INFO L93 Difference]: Finished difference Result 4108 states and 12060 transitions. [2020-04-18 20:06:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 12060 transitions. [2020-04-18 20:06:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 20:06:10,728 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 20:06:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:06:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1080284497, now seen corresponding path program 6 times [2020-04-18 20:06:10,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:06:10,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157622432] [2020-04-18 20:06:10,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:06:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:06:10,832 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 20:06:10,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157622432] [2020-04-18 20:06:10,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:06:10,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:06:10,833 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:06:10,838 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:06:10,866 INFO L259 McrAutomatonBuilder]: Finished intersection with 176 states and 375 transitions. [2020-04-18 20:06:10,866 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:06:10,936 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 20:06:10,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:06:10,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1704, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 20:06:10,938 INFO L87 Difference]: Start difference. First operand 4108 states and 12060 transitions. Second operand 7 states. [2020-04-18 20:06:11,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:11,083 INFO L93 Difference]: Finished difference Result 5724 states and 16214 transitions. [2020-04-18 20:06:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 16214 transitions. [2020-04-18 20:06:11,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:11,096 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2128318887] [2020-04-18 20:06:11,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:06:11,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:06:11,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2128318887] [2020-04-18 20:06:11,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 20:06:11,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:06:11,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 20:06:11,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2044, Unknown=0, NotChecked=0, Total=2352 [2020-04-18 20:06:11,099 INFO L87 Difference]: Start difference. First operand 1224 states and 3599 transitions. Second operand 17 states. [2020-04-18 20:06:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:06:13,494 INFO L93 Difference]: Finished difference Result 2851 states and 8366 transitions. [2020-04-18 20:06:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-04-18 20:06:13,495 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-04-18 20:06:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:06:13,495 INFO L225 Difference]: With dead ends: 2851 [2020-04-18 20:06:13,496 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:06:13,499 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1499, Invalid=9213, Unknown=0, NotChecked=0, Total=10712 [2020-04-18 20:06:13,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:06:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:06:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:06:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:06:13,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-04-18 20:06:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:06:13,500 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:06:13,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 20:06:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:06:13,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:06:13,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:06:13 BasicIcfg [2020-04-18 20:06:13,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:06:13,509 INFO L168 Benchmark]: Toolchain (without parser) took 10663.86 ms. Allocated memory was 136.8 MB in the beginning and 447.7 MB in the end (delta: 310.9 MB). Free memory was 100.2 MB in the beginning and 359.7 MB in the end (delta: -259.5 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:13,510 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 20:06:13,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 852.47 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 98.3 MB in the beginning and 155.8 MB in the end (delta: -57.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:13,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.26 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 153.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:13,513 INFO L168 Benchmark]: Boogie Preprocessor took 27.15 ms. Allocated memory is still 201.3 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:13,514 INFO L168 Benchmark]: RCFGBuilder took 474.78 ms. Allocated memory is still 201.3 MB. Free memory was 152.3 MB in the beginning and 129.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:13,514 INFO L168 Benchmark]: TraceAbstraction took 9221.26 ms. Allocated memory was 201.3 MB in the beginning and 447.7 MB in the end (delta: 246.4 MB). Free memory was 129.0 MB in the beginning and 359.7 MB in the end (delta: -230.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-04-18 20:06:13,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 852.47 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 98.3 MB in the beginning and 155.8 MB in the end (delta: -57.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.26 ms. Allocated memory is still 201.3 MB. Free memory was 155.8 MB in the beginning and 153.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.15 ms. Allocated memory is still 201.3 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.78 ms. Allocated memory is still 201.3 MB. Free memory was 152.3 MB in the beginning and 129.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9221.26 ms. Allocated memory was 201.3 MB in the beginning and 447.7 MB in the end (delta: 246.4 MB). Free memory was 129.0 MB in the beginning and 359.7 MB in the end (delta: -230.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 444 SDtfs, 1019 SDslu, 2677 SDs, 0 SdLazy, 650 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3710 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8473occurred 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: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...