/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/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 20:04:33,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 20:04:33,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 20:04:33,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 20:04:33,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 20:04:33,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 20:04:33,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 20:04:33,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 20:04:33,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 20:04:33,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 20:04:33,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 20:04:33,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 20:04:33,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 20:04:33,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 20:04:33,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 20:04:33,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 20:04:33,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 20:04:33,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 20:04:33,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 20:04:33,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 20:04:33,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 20:04:33,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 20:04:33,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 20:04:33,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 20:04:33,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 20:04:33,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 20:04:33,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 20:04:33,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 20:04:33,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 20:04:33,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 20:04:33,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 20:04:33,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 20:04:33,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 20:04:33,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 20:04:33,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 20:04:33,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 20:04:33,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 20:04:33,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 20:04:33,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 20:04:33,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 20:04:33,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 20:04:33,470 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 20:04:33,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 20:04:33,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 20:04:33,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 20:04:33,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 20:04:33,486 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 20:04:33,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 20:04:33,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 20:04:33,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 20:04:33,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 20:04:33,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 20:04:33,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 20:04:33,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 20:04:33,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 20:04:33,488 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 20:04:33,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 20:04:33,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 20:04:33,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 20:04:33,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 20:04:33,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 20:04:33,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 20:04:33,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 20:04:33,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 20:04:33,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 20:04:33,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 20:04:33,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 20:04:33,491 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 20:04:33,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 20:04:33,491 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 20:04:33,491 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 20:04:33,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 20:04:33,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 20:04:33,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 20:04:33,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 20:04:33,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 20:04:33,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 20:04:33,776 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 20:04:33,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-04-18 20:04:33,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f336d1f3d/d91b13c859094547b266bc71cd701563/FLAGafa083054 [2020-04-18 20:04:34,403 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 20:04:34,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2020-04-18 20:04:34,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f336d1f3d/d91b13c859094547b266bc71cd701563/FLAGafa083054 [2020-04-18 20:04:34,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f336d1f3d/d91b13c859094547b266bc71cd701563 [2020-04-18 20:04:34,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 20:04:34,716 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 20:04:34,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 20:04:34,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 20:04:34,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 20:04:34,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:04:34" (1/1) ... [2020-04-18 20:04:34,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:34, skipping insertion in model container [2020-04-18 20:04:34,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:04:34" (1/1) ... [2020-04-18 20:04:34,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 20:04:34,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 20:04:35,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:04:35,244 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 20:04:35,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 20:04:35,396 INFO L208 MainTranslator]: Completed translation [2020-04-18 20:04:35,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35 WrapperNode [2020-04-18 20:04:35,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 20:04:35,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 20:04:35,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 20:04:35,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 20:04:35,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 20:04:35,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 20:04:35,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 20:04:35,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 20:04:35,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (1/1) ... [2020-04-18 20:04:35,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 20:04:35,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 20:04:35,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 20:04:35,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 20:04:35,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (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 20:04:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 20:04:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 20:04:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 20:04:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 20:04:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 20:04:35,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 20:04:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 20:04:35,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 20:04:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 20:04:35,542 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 20:04:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 20:04:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 20:04:35,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 20:04:35,545 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 20:04:35,941 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 20:04:35,942 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 20:04:35,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:04:35 BoogieIcfgContainer [2020-04-18 20:04:35,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 20:04:35,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 20:04:35,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 20:04:35,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 20:04:35,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:04:34" (1/3) ... [2020-04-18 20:04:35,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68eb28ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:04:35, skipping insertion in model container [2020-04-18 20:04:35,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:04:35" (2/3) ... [2020-04-18 20:04:35,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68eb28ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:04:35, skipping insertion in model container [2020-04-18 20:04:35,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:04:35" (3/3) ... [2020-04-18 20:04:35,955 INFO L109 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2020-04-18 20:04:35,964 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 20:04:35,964 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 20:04:35,971 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 20:04:35,972 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 20:04:35,998 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:35,998 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:35,998 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:35,999 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:35,999 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,000 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,000 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,000 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,001 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,001 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,001 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,002 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,002 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,002 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,003 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,003 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,003 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,004 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,008 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,008 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,009 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,009 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,015 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,015 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,016 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,016 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,019 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,019 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,019 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,019 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 20:04:36,038 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 20:04:36,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 20:04:36,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 20:04:36,063 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 20:04:36,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 20:04:36,064 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 20:04:36,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 20:04:36,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 20:04:36,065 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 20:04:36,087 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 20:04:36,608 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 20:04:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 20:04:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:04:36,646 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:04:36,647 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] [2020-04-18 20:04:36,647 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:04:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:36,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1548204118, now seen corresponding path program 1 times [2020-04-18 20:04:36,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:04:36,662 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1264194565] [2020-04-18 20:04:36,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:36,698 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 20:04:36,701 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 20:04:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 20:04:36,702 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:04:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:36,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1548204118, now seen corresponding path program 2 times [2020-04-18 20:04:36,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:36,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808198993] [2020-04-18 20:04:36,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:37,189 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 20:04:37,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808198993] [2020-04-18 20:04:37,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:37,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:04:37,192 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:37,197 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:37,205 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 20:04:37,205 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:37,258 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:04:37,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:04:37,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:04:37,265 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 20:04:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:37,378 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 20:04:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 20:04:37,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:04:37,380 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1264194565] [2020-04-18 20:04:37,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:04:37,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:04:37,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1264194565] [2020-04-18 20:04:37,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:04:37,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:04:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:04:37,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:04:37,388 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 20:04:37,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:37,933 INFO L93 Difference]: Finished difference Result 19138 states and 65952 transitions. [2020-04-18 20:04:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:04:37,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 20:04:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:04:38,025 INFO L225 Difference]: With dead ends: 19138 [2020-04-18 20:04:38,026 INFO L226 Difference]: Without dead ends: 6235 [2020-04-18 20:04:38,029 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:04:38,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2020-04-18 20:04:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 5203. [2020-04-18 20:04:38,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5203 states. [2020-04-18 20:04:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 17657 transitions. [2020-04-18 20:04:38,477 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 17657 transitions. Word has length 36 [2020-04-18 20:04:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:04:38,480 INFO L479 AbstractCegarLoop]: Abstraction has 5203 states and 17657 transitions. [2020-04-18 20:04:38,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:04:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 17657 transitions. [2020-04-18 20:04:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:04:38,499 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:04:38,507 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] [2020-04-18 20:04:38,508 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:04:38,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:38,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1307461929, now seen corresponding path program 1 times [2020-04-18 20:04:38,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:04:38,509 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [661238892] [2020-04-18 20:04:38,511 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:38,513 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 20:04:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 20:04:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 20:04:38,518 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:04:38,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1307461929, now seen corresponding path program 2 times [2020-04-18 20:04:38,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:38,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341539356] [2020-04-18 20:04:38,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:38,756 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 20:04:38,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341539356] [2020-04-18 20:04:38,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:38,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:04:38,757 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:38,762 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:38,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 20:04:38,769 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:38,825 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:04:38,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:04:38,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 20:04:38,826 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-04-18 20:04:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:38,884 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 20:04:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 20:04:38,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:04:38,885 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [661238892] [2020-04-18 20:04:38,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:04:38,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 20:04:38,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [661238892] [2020-04-18 20:04:38,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 20:04:38,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:04:38,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:04:38,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:04:38,888 INFO L87 Difference]: Start difference. First operand 5203 states and 17657 transitions. Second operand 6 states. [2020-04-18 20:04:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:39,058 INFO L93 Difference]: Finished difference Result 6402 states and 21224 transitions. [2020-04-18 20:04:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 20:04:39,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-04-18 20:04:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:04:39,094 INFO L225 Difference]: With dead ends: 6402 [2020-04-18 20:04:39,094 INFO L226 Difference]: Without dead ends: 4598 [2020-04-18 20:04:39,098 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 20:04:39,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states. [2020-04-18 20:04:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 4598. [2020-04-18 20:04:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4598 states. [2020-04-18 20:04:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 15242 transitions. [2020-04-18 20:04:39,375 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 15242 transitions. Word has length 38 [2020-04-18 20:04:39,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:04:39,378 INFO L479 AbstractCegarLoop]: Abstraction has 4598 states and 15242 transitions. [2020-04-18 20:04:39,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 20:04:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 15242 transitions. [2020-04-18 20:04:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 20:04:39,388 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:04:39,388 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] [2020-04-18 20:04:39,389 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:04:39,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:39,389 INFO L82 PathProgramCache]: Analyzing trace with hash -476874408, now seen corresponding path program 1 times [2020-04-18 20:04:39,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:04:39,393 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1608692423] [2020-04-18 20:04:39,395 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:39,399 INFO L259 McrAutomatonBuilder]: Finished intersection with 121 states and 200 transitions. [2020-04-18 20:04:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2020-04-18 20:04:39,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 20:04:39,403 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:04:39,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:39,403 INFO L82 PathProgramCache]: Analyzing trace with hash -476874408, now seen corresponding path program 2 times [2020-04-18 20:04:39,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:39,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760466685] [2020-04-18 20:04:39,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:39,627 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 20:04:39,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760466685] [2020-04-18 20:04:39,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:39,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:04:39,630 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:39,635 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:39,644 INFO L259 McrAutomatonBuilder]: Finished intersection with 77 states and 112 transitions. [2020-04-18 20:04:39,645 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:39,685 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 20:04:39,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:04:39,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 20:04:39,686 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 7 states. [2020-04-18 20:04:39,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:39,843 INFO L93 Difference]: Finished difference Result 121 states and 200 transitions. [2020-04-18 20:04:39,843 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 200 transitions. [2020-04-18 20:04:39,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:04:39,844 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1608692423] [2020-04-18 20:04:39,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:04:39,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:04:39,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1608692423] [2020-04-18 20:04:39,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 20:04:39,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:04:39,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:04:39,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-04-18 20:04:39,847 INFO L87 Difference]: Start difference. First operand 4598 states and 15242 transitions. Second operand 7 states. [2020-04-18 20:04:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:39,994 INFO L93 Difference]: Finished difference Result 4409 states and 14042 transitions. [2020-04-18 20:04:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 20:04:39,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 20:04:39,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:04:40,015 INFO L225 Difference]: With dead ends: 4409 [2020-04-18 20:04:40,016 INFO L226 Difference]: Without dead ends: 2897 [2020-04-18 20:04:40,016 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 20:04:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-04-18 20:04:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2873. [2020-04-18 20:04:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2020-04-18 20:04:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 8957 transitions. [2020-04-18 20:04:40,109 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 8957 transitions. Word has length 40 [2020-04-18 20:04:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:04:40,109 INFO L479 AbstractCegarLoop]: Abstraction has 2873 states and 8957 transitions. [2020-04-18 20:04:40,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 20:04:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 8957 transitions. [2020-04-18 20:04:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:04:40,117 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:04:40,117 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] [2020-04-18 20:04:40,117 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:04:40,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:40,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1102967894, now seen corresponding path program 1 times [2020-04-18 20:04:40,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:04:40,118 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [208821298] [2020-04-18 20:04:40,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:40,130 INFO L259 McrAutomatonBuilder]: Finished intersection with 461 states and 1132 transitions. [2020-04-18 20:04:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states. [2020-04-18 20:04:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 20:04:40,136 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:04:40,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:40,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1102967894, now seen corresponding path program 2 times [2020-04-18 20:04:40,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:40,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995468850] [2020-04-18 20:04:40,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:40,287 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 20:04:40,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995468850] [2020-04-18 20:04:40,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:40,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:04:40,290 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:40,297 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:40,322 INFO L259 McrAutomatonBuilder]: Finished intersection with 137 states and 258 transitions. [2020-04-18 20:04:40,322 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:40,894 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 20:04:40,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:04:40,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:04:40,895 INFO L87 Difference]: Start difference. First operand 461 states. Second operand 9 states. [2020-04-18 20:04:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:41,168 INFO L93 Difference]: Finished difference Result 461 states and 1132 transitions. [2020-04-18 20:04:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1132 transitions. [2020-04-18 20:04:41,169 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:04:41,170 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [208821298] [2020-04-18 20:04:41,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:04:41,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 20:04:41,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [208821298] [2020-04-18 20:04:41,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 20:04:41,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:04:41,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:04:41,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-04-18 20:04:41,173 INFO L87 Difference]: Start difference. First operand 2873 states and 8957 transitions. Second operand 9 states. [2020-04-18 20:04:41,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:41,316 INFO L93 Difference]: Finished difference Result 2171 states and 6563 transitions. [2020-04-18 20:04:41,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 20:04:41,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-04-18 20:04:41,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:04:41,324 INFO L225 Difference]: With dead ends: 2171 [2020-04-18 20:04:41,324 INFO L226 Difference]: Without dead ends: 1255 [2020-04-18 20:04:41,325 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2020-04-18 20:04:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-04-18 20:04:41,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1063. [2020-04-18 20:04:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-04-18 20:04:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 3070 transitions. [2020-04-18 20:04:41,356 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 3070 transitions. Word has length 44 [2020-04-18 20:04:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:04:41,356 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 3070 transitions. [2020-04-18 20:04:41,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 20:04:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 3070 transitions. [2020-04-18 20:04:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:04:41,360 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 20:04:41,360 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] [2020-04-18 20:04:41,361 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 20:04:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:41,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1419398676, now seen corresponding path program 1 times [2020-04-18 20:04:41,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 20:04:41,362 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [48864935] [2020-04-18 20:04:41,363 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:41,405 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 20:04:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 20:04:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:04:41,427 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 20:04:41,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:41,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1463839462, now seen corresponding path program 2 times [2020-04-18 20:04:41,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:41,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985420862] [2020-04-18 20:04:41,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:41,563 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 20:04:41,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985420862] [2020-04-18 20:04:41,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:41,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 20:04:41,565 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:41,569 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:41,607 INFO L259 McrAutomatonBuilder]: Finished intersection with 207 states and 422 transitions. [2020-04-18 20:04:41,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:41,694 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 20:04:41,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 20:04:41,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 20:04:41,695 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 9 states. [2020-04-18 20:04:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:42,196 INFO L93 Difference]: Finished difference Result 1771 states and 5721 transitions. [2020-04-18 20:04:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 5721 transitions. [2020-04-18 20:04:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:04:42,203 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 20:04:42,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash -669175214, now seen corresponding path program 3 times [2020-04-18 20:04:42,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:42,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380371681] [2020-04-18 20:04:42,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:42,297 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 20:04:42,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380371681] [2020-04-18 20:04:42,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:42,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 20:04:42,299 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:42,304 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:42,335 INFO L259 McrAutomatonBuilder]: Finished intersection with 205 states and 420 transitions. [2020-04-18 20:04:42,335 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:42,420 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 20:04:42,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 20:04:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-04-18 20:04:42,423 INFO L87 Difference]: Start difference. First operand 1771 states and 5721 transitions. Second operand 6 states. [2020-04-18 20:04:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:42,673 INFO L93 Difference]: Finished difference Result 2997 states and 9384 transitions. [2020-04-18 20:04:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2997 states and 9384 transitions. [2020-04-18 20:04:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:04:42,684 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 20:04:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:42,685 INFO L82 PathProgramCache]: Analyzing trace with hash 398641652, now seen corresponding path program 4 times [2020-04-18 20:04:42,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:42,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593915724] [2020-04-18 20:04:42,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:42,873 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 20:04:42,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593915724] [2020-04-18 20:04:42,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:42,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:04:42,878 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:42,889 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:42,947 INFO L259 McrAutomatonBuilder]: Finished intersection with 301 states and 688 transitions. [2020-04-18 20:04:42,948 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:42,991 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 21 times. [2020-04-18 20:04:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 20:04:42,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2020-04-18 20:04:42,994 INFO L87 Difference]: Start difference. First operand 2997 states and 9384 transitions. Second operand 7 states. [2020-04-18 20:04:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:43,321 INFO L93 Difference]: Finished difference Result 3681 states and 11284 transitions. [2020-04-18 20:04:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 11284 transitions. [2020-04-18 20:04:43,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 20:04:43,330 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 20:04:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 20:04:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash -198198062, now seen corresponding path program 5 times [2020-04-18 20:04:43,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 20:04:43,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527935416] [2020-04-18 20:04:43,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 20:04:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 20:04:43,495 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 20:04:43,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527935416] [2020-04-18 20:04:43,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 20:04:43,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 20:04:43,496 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 20:04:43,501 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 20:04:43,552 INFO L259 McrAutomatonBuilder]: Finished intersection with 327 states and 760 transitions. [2020-04-18 20:04:43,553 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 20:04:43,628 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 25 times. [2020-04-18 20:04:43,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 20:04:43,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1178, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 20:04:43,629 INFO L87 Difference]: Start difference. First operand 3681 states and 11284 transitions. Second operand 8 states. [2020-04-18 20:04:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:44,012 INFO L93 Difference]: Finished difference Result 4475 states and 13547 transitions. [2020-04-18 20:04:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 13547 transitions. [2020-04-18 20:04:44,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:04:44,022 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [48864935] [2020-04-18 20:04:44,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 20:04:44,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 20:04:44,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [48864935] [2020-04-18 20:04:44,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 20:04:44,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 20:04:44,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 20:04:44,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1681, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 20:04:44,025 INFO L87 Difference]: Start difference. First operand 1063 states and 3070 transitions. Second operand 16 states. [2020-04-18 20:04:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 20:04:45,056 INFO L93 Difference]: Finished difference Result 1225 states and 3522 transitions. [2020-04-18 20:04:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-04-18 20:04:45,056 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-04-18 20:04:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 20:04:45,057 INFO L225 Difference]: With dead ends: 1225 [2020-04-18 20:04:45,057 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 20:04:45,059 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=632, Invalid=3658, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 20:04:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 20:04:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 20:04:45,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 20:04:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 20:04:45,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 20:04:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 20:04:45,060 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 20:04:45,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 20:04:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 20:04:45,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 20:04:45,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:04:45 BasicIcfg [2020-04-18 20:04:45,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 20:04:45,071 INFO L168 Benchmark]: Toolchain (without parser) took 10369.71 ms. Allocated memory was 138.4 MB in the beginning and 500.7 MB in the end (delta: 362.3 MB). Free memory was 100.9 MB in the beginning and 166.7 MB in the end (delta: -65.8 MB). Peak memory consumption was 296.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:04:45,072 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 20:04:45,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.02 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.9 MB in the beginning and 159.1 MB in the end (delta: -60.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-04-18 20:04:45,079 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.53 ms. Allocated memory is still 202.4 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 20:04:45,084 INFO L168 Benchmark]: Boogie Preprocessor took 25.94 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 20:04:45,085 INFO L168 Benchmark]: RCFGBuilder took 476.37 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 133.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 20:04:45,092 INFO L168 Benchmark]: TraceAbstraction took 9120.60 ms. Allocated memory was 202.4 MB in the beginning and 500.7 MB in the end (delta: 298.3 MB). Free memory was 132.8 MB in the beginning and 166.7 MB in the end (delta: -34.0 MB). Peak memory consumption was 264.4 MB. Max. memory is 7.1 GB. [2020-04-18 20:04:45,103 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.02 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 98.9 MB in the beginning and 159.1 MB in the end (delta: -60.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.53 ms. Allocated memory is still 202.4 MB. Free memory was 159.1 MB in the beginning and 157.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.94 ms. Allocated memory is still 202.4 MB. Free memory was 157.1 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.37 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 133.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9120.60 ms. Allocated memory was 202.4 MB in the beginning and 500.7 MB in the end (delta: 298.3 MB). Free memory was 132.8 MB in the beginning and 166.7 MB in the end (delta: -34.0 MB). Peak memory consumption was 264.4 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 479 SDtfs, 1094 SDslu, 2022 SDs, 0 SdLazy, 425 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 567 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 1248 StatesRemovedByMinimization, 3 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...