/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:49:02,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:49:02,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:49:02,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:49:02,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:49:02,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:49:02,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:49:02,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:49:02,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:49:02,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:49:02,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:49:02,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:49:02,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:49:02,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:49:02,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:49:02,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:49:02,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:49:02,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:49:02,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:49:02,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:49:02,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:49:02,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:49:02,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:49:02,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:49:02,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:49:02,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:49:02,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:49:02,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:49:02,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:49:02,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:49:02,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:49:02,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:49:02,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:49:02,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:49:02,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:49:02,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:49:02,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:49:02,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:49:02,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:49:02,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:49:02,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:49:02,548 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 19:49:02,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:49:02,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:49:02,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:49:02,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:49:02,572 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:49:02,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:49:02,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:49:02,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:49:02,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:49:02,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:49:02,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:49:02,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:49:02,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:49:02,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:49:02,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:49:02,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:49:02,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:49:02,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:49:02,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:49:02,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:49:02,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:49:02,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:49:02,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:49:02,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:49:02,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:49:02,576 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:49:02,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:49:02,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:49:02,576 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:49:02,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:49:02,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:49:02,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:49:02,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:49:02,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:49:02,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:49:02,884 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:49:02,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-18 19:49:02,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee307d8c/e133409851624cad911cb317e775cddc/FLAGa658c8f88 [2020-04-18 19:49:03,508 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:49:03,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-04-18 19:49:03,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee307d8c/e133409851624cad911cb317e775cddc/FLAGa658c8f88 [2020-04-18 19:49:03,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee307d8c/e133409851624cad911cb317e775cddc [2020-04-18 19:49:03,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:49:03,874 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:49:03,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:49:03,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:49:03,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:49:03,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:49:03" (1/1) ... [2020-04-18 19:49:03,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c681e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:03, skipping insertion in model container [2020-04-18 19:49:03,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:49:03" (1/1) ... [2020-04-18 19:49:03,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:49:03,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:49:04,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:49:04,577 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:49:04,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:49:04,709 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:49:04,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04 WrapperNode [2020-04-18 19:49:04,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:49:04,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:49:04,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:49:04,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:49:04,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:49:04,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:49:04,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:49:04,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:49:04,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (1/1) ... [2020-04-18 19:49:04,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:49:04,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:49:04,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:49:04,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:49:04,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (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 19:49:04,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:49:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:49:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:49:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:49:04,865 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:49:04,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:49:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:49:04,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:49:04,866 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:49:04,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:49:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:49:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:49:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:49:04,869 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 19:49:05,205 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:49:05,206 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:49:05,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:49:05 BoogieIcfgContainer [2020-04-18 19:49:05,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:49:05,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:49:05,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:49:05,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:49:05,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:49:03" (1/3) ... [2020-04-18 19:49:05,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a102e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:49:05, skipping insertion in model container [2020-04-18 19:49:05,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:49:04" (2/3) ... [2020-04-18 19:49:05,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a102e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:49:05, skipping insertion in model container [2020-04-18 19:49:05,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:49:05" (3/3) ... [2020-04-18 19:49:05,220 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-04-18 19:49:05,238 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:49:05,239 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:49:05,256 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:49:05,258 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:49:05,291 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,292 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,292 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,292 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,293 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,293 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,294 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,294 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,295 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,295 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,296 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,296 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,296 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,297 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,297 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,297 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,298 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,298 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,302 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,303 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,303 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,303 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,313 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,314 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,315 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,315 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,326 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,326 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,326 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,327 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:49:05,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:49:05,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:49:05,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:49:05,365 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:49:05,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:49:05,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:49:05,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:49:05,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:49:05,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:49:05,380 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:49:05,857 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:49:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:49:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:49:05,901 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:05,903 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 19:49:05,903 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:05,912 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 1 times [2020-04-18 19:49:05,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:05,921 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1591472048] [2020-04-18 19:49:05,939 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:05,958 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:49:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:49:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:49:05,964 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:05,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2081382383, now seen corresponding path program 2 times [2020-04-18 19:49:05,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:05,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738509863] [2020-04-18 19:49:05,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:06,454 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 19:49:06,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738509863] [2020-04-18 19:49:06,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:06,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:06,458 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:06,463 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:06,476 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:49:06,477 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:06,540 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:49:06,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:06,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:49:06,546 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-04-18 19:49:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:06,667 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:49:06,667 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:49:06,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:06,668 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1591472048] [2020-04-18 19:49:06,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:06,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:49:06,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1591472048] [2020-04-18 19:49:06,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:49:06,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:06,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:06,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:49:06,677 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 6 states. [2020-04-18 19:49:07,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:07,163 INFO L93 Difference]: Finished difference Result 19772 states and 68248 transitions. [2020-04-18 19:49:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:49:07,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-04-18 19:49:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:07,246 INFO L225 Difference]: With dead ends: 19772 [2020-04-18 19:49:07,247 INFO L226 Difference]: Without dead ends: 6494 [2020-04-18 19:49:07,251 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 19:49:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-04-18 19:49:07,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 5372. [2020-04-18 19:49:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5372 states. [2020-04-18 19:49:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 18201 transitions. [2020-04-18 19:49:07,733 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 18201 transitions. Word has length 36 [2020-04-18 19:49:07,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:07,734 INFO L479 AbstractCegarLoop]: Abstraction has 5372 states and 18201 transitions. [2020-04-18 19:49:07,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:49:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 18201 transitions. [2020-04-18 19:49:07,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:49:07,751 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:07,752 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 19:49:07,752 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:07,753 INFO L82 PathProgramCache]: Analyzing trace with hash -119523886, now seen corresponding path program 1 times [2020-04-18 19:49:07,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:07,754 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1629207254] [2020-04-18 19:49:07,756 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:07,759 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 86 transitions. [2020-04-18 19:49:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-04-18 19:49:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:49:07,761 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:07,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:07,762 INFO L82 PathProgramCache]: Analyzing trace with hash -2092436526, now seen corresponding path program 2 times [2020-04-18 19:49:07,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:07,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077273311] [2020-04-18 19:49:07,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:07,985 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 19:49:07,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077273311] [2020-04-18 19:49:07,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:07,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:07,987 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:07,991 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:07,999 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 72 transitions. [2020-04-18 19:49:07,999 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:08,060 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:49:08,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:08,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:49:08,062 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 6 states. [2020-04-18 19:49:08,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:08,228 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:49:08,228 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:49:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:49:08,229 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:08,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:08,229 INFO L82 PathProgramCache]: Analyzing trace with hash -119523886, now seen corresponding path program 3 times [2020-04-18 19:49:08,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:08,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961684178] [2020-04-18 19:49:08,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:08,355 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 19:49:08,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961684178] [2020-04-18 19:49:08,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:08,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:08,356 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:08,360 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:08,364 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 62 transitions. [2020-04-18 19:49:08,365 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:08,556 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:49:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:49:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:49:08,557 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand 11 states. [2020-04-18 19:49:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:08,645 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-04-18 19:49:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-04-18 19:49:08,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:08,646 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1629207254] [2020-04-18 19:49:08,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:08,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:08,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1629207254] [2020-04-18 19:49:08,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:49:08,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:08,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:49:08,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:49:08,649 INFO L87 Difference]: Start difference. First operand 5372 states and 18201 transitions. Second operand 11 states. [2020-04-18 19:49:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:08,904 INFO L93 Difference]: Finished difference Result 7156 states and 23836 transitions. [2020-04-18 19:49:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:49:08,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-04-18 19:49:08,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:08,948 INFO L225 Difference]: With dead ends: 7156 [2020-04-18 19:49:08,949 INFO L226 Difference]: Without dead ends: 5744 [2020-04-18 19:49:08,950 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:49:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2020-04-18 19:49:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 4672. [2020-04-18 19:49:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4672 states. [2020-04-18 19:49:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 15711 transitions. [2020-04-18 19:49:09,121 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 15711 transitions. Word has length 38 [2020-04-18 19:49:09,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:09,122 INFO L479 AbstractCegarLoop]: Abstraction has 4672 states and 15711 transitions. [2020-04-18 19:49:09,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:49:09,122 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 15711 transitions. [2020-04-18 19:49:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:49:09,133 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:09,133 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] [2020-04-18 19:49:09,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:09,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1321324144, now seen corresponding path program 1 times [2020-04-18 19:49:09,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:09,134 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [8387571] [2020-04-18 19:49:09,135 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:09,138 INFO L259 McrAutomatonBuilder]: Finished intersection with 88 states and 135 transitions. [2020-04-18 19:49:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-04-18 19:49:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:49:09,139 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:09,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1321324144, now seen corresponding path program 2 times [2020-04-18 19:49:09,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:09,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952961257] [2020-04-18 19:49:09,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:09,283 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 19:49:09,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952961257] [2020-04-18 19:49:09,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:09,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:09,284 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:09,288 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:09,294 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 99 transitions. [2020-04-18 19:49:09,295 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:09,393 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:49:09,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:09,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:49:09,394 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 8 states. [2020-04-18 19:49:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:09,460 INFO L93 Difference]: Finished difference Result 88 states and 135 transitions. [2020-04-18 19:49:09,461 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 135 transitions. [2020-04-18 19:49:09,461 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:09,462 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [8387571] [2020-04-18 19:49:09,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:09,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:09,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [8387571] [2020-04-18 19:49:09,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:49:09,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:09,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:09,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:49:09,464 INFO L87 Difference]: Start difference. First operand 4672 states and 15711 transitions. Second operand 8 states. [2020-04-18 19:49:09,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:09,791 INFO L93 Difference]: Finished difference Result 6320 states and 20915 transitions. [2020-04-18 19:49:09,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:49:09,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-04-18 19:49:09,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:09,831 INFO L225 Difference]: With dead ends: 6320 [2020-04-18 19:49:09,831 INFO L226 Difference]: Without dead ends: 5216 [2020-04-18 19:49:09,831 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:49:09,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2020-04-18 19:49:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 4048. [2020-04-18 19:49:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4048 states. [2020-04-18 19:49:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 13587 transitions. [2020-04-18 19:49:09,989 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 13587 transitions. Word has length 39 [2020-04-18 19:49:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:09,990 INFO L479 AbstractCegarLoop]: Abstraction has 4048 states and 13587 transitions. [2020-04-18 19:49:09,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:49:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 13587 transitions. [2020-04-18 19:49:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:49:09,998 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:09,999 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 19:49:09,999 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:09,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:09,999 INFO L82 PathProgramCache]: Analyzing trace with hash -609493549, now seen corresponding path program 1 times [2020-04-18 19:49:10,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:10,000 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1585819151] [2020-04-18 19:49:10,001 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:10,004 INFO L259 McrAutomatonBuilder]: Finished intersection with 149 states and 304 transitions. [2020-04-18 19:49:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-04-18 19:49:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:49:10,007 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:10,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1712561107, now seen corresponding path program 2 times [2020-04-18 19:49:10,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:10,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719961785] [2020-04-18 19:49:10,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:10,148 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 19:49:10,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719961785] [2020-04-18 19:49:10,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:10,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:10,150 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:10,153 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:10,163 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 154 transitions. [2020-04-18 19:49:10,163 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:10,210 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:49:10,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:10,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:49:10,211 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 6 states. [2020-04-18 19:49:10,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:10,345 INFO L93 Difference]: Finished difference Result 184 states and 347 transitions. [2020-04-18 19:49:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 347 transitions. [2020-04-18 19:49:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:49:10,346 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:10,346 INFO L82 PathProgramCache]: Analyzing trace with hash -609493549, now seen corresponding path program 3 times [2020-04-18 19:49:10,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:10,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466821875] [2020-04-18 19:49:10,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:10,465 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 19:49:10,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466821875] [2020-04-18 19:49:10,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:10,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:10,466 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:10,471 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:10,481 INFO L259 McrAutomatonBuilder]: Finished intersection with 87 states and 144 transitions. [2020-04-18 19:49:10,482 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:10,669 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:49:10,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:49:10,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:49:10,670 INFO L87 Difference]: Start difference. First operand 184 states and 347 transitions. Second operand 11 states. [2020-04-18 19:49:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:10,860 INFO L93 Difference]: Finished difference Result 184 states and 347 transitions. [2020-04-18 19:49:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 347 transitions. [2020-04-18 19:49:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:49:10,861 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:49:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:10,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1994403109, now seen corresponding path program 4 times [2020-04-18 19:49:10,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:10,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054913170] [2020-04-18 19:49:10,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:10,987 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 19:49:10,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054913170] [2020-04-18 19:49:10,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:10,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:10,988 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:10,994 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:11,008 INFO L259 McrAutomatonBuilder]: Finished intersection with 88 states and 146 transitions. [2020-04-18 19:49:11,008 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:11,036 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:49:11,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:49:11,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:49:11,038 INFO L87 Difference]: Start difference. First operand 184 states and 347 transitions. Second operand 11 states. [2020-04-18 19:49:11,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:11,216 INFO L93 Difference]: Finished difference Result 184 states and 347 transitions. [2020-04-18 19:49:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 347 transitions. [2020-04-18 19:49:11,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:11,218 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1585819151] [2020-04-18 19:49:11,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:11,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:11,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1585819151] [2020-04-18 19:49:11,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:49:11,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:11,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:49:11,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:11,220 INFO L87 Difference]: Start difference. First operand 4048 states and 13587 transitions. Second operand 12 states. [2020-04-18 19:49:11,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:11,434 INFO L93 Difference]: Finished difference Result 5626 states and 18491 transitions. [2020-04-18 19:49:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-04-18 19:49:11,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-04-18 19:49:11,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:11,455 INFO L225 Difference]: With dead ends: 5626 [2020-04-18 19:49:11,456 INFO L226 Difference]: Without dead ends: 4606 [2020-04-18 19:49:11,456 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2020-04-18 19:49:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 3593. [2020-04-18 19:49:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3593 states. [2020-04-18 19:49:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 11958 transitions. [2020-04-18 19:49:11,577 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 11958 transitions. Word has length 40 [2020-04-18 19:49:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:11,578 INFO L479 AbstractCegarLoop]: Abstraction has 3593 states and 11958 transitions. [2020-04-18 19:49:11,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:49:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 11958 transitions. [2020-04-18 19:49:11,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:49:11,585 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:11,586 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 19:49:11,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:11,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1411336305, now seen corresponding path program 1 times [2020-04-18 19:49:11,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:11,587 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1185593229] [2020-04-18 19:49:11,588 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:11,592 INFO L259 McrAutomatonBuilder]: Finished intersection with 192 states and 413 transitions. [2020-04-18 19:49:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-04-18 19:49:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:49:11,594 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:11,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash -561576335, now seen corresponding path program 2 times [2020-04-18 19:49:11,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:11,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477297231] [2020-04-18 19:49:11,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:11,694 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 19:49:11,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477297231] [2020-04-18 19:49:11,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:11,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:11,696 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:11,699 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:11,710 INFO L259 McrAutomatonBuilder]: Finished intersection with 110 states and 195 transitions. [2020-04-18 19:49:11,711 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:11,783 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:49:11,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:11,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:49:11,784 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 8 states. [2020-04-18 19:49:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:12,043 INFO L93 Difference]: Finished difference Result 233 states and 484 transitions. [2020-04-18 19:49:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 484 transitions. [2020-04-18 19:49:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:49:12,044 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:12,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1411336305, now seen corresponding path program 3 times [2020-04-18 19:49:12,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:12,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333150992] [2020-04-18 19:49:12,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:12,124 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 19:49:12,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333150992] [2020-04-18 19:49:12,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:12,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:49:12,126 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:12,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:12,141 INFO L259 McrAutomatonBuilder]: Finished intersection with 105 states and 185 transitions. [2020-04-18 19:49:12,141 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:12,233 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:49:12,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:49:12,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:49:12,234 INFO L87 Difference]: Start difference. First operand 233 states and 484 transitions. Second operand 6 states. [2020-04-18 19:49:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:12,298 INFO L93 Difference]: Finished difference Result 233 states and 484 transitions. [2020-04-18 19:49:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 484 transitions. [2020-04-18 19:49:12,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:12,300 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1185593229] [2020-04-18 19:49:12,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:12,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:49:12,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1185593229] [2020-04-18 19:49:12,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 19:49:12,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:12,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:49:12,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:12,302 INFO L87 Difference]: Start difference. First operand 3593 states and 11958 transitions. Second operand 12 states. [2020-04-18 19:49:12,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:12,856 INFO L93 Difference]: Finished difference Result 5853 states and 19161 transitions. [2020-04-18 19:49:12,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-04-18 19:49:12,856 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-04-18 19:49:12,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:12,869 INFO L225 Difference]: With dead ends: 5853 [2020-04-18 19:49:12,869 INFO L226 Difference]: Without dead ends: 4117 [2020-04-18 19:49:12,870 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=281, Invalid=1125, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:49:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2020-04-18 19:49:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3220. [2020-04-18 19:49:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3220 states. [2020-04-18 19:49:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 10471 transitions. [2020-04-18 19:49:12,967 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 10471 transitions. Word has length 41 [2020-04-18 19:49:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:12,968 INFO L479 AbstractCegarLoop]: Abstraction has 3220 states and 10471 transitions. [2020-04-18 19:49:12,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 19:49:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 10471 transitions. [2020-04-18 19:49:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:49:12,975 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:12,975 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] [2020-04-18 19:49:12,975 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:12,975 INFO L82 PathProgramCache]: Analyzing trace with hash 503157938, now seen corresponding path program 1 times [2020-04-18 19:49:12,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:12,976 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1697367698] [2020-04-18 19:49:12,977 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:12,981 INFO L259 McrAutomatonBuilder]: Finished intersection with 235 states and 522 transitions. [2020-04-18 19:49:12,983 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states. [2020-04-18 19:49:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:49:12,984 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1661203988, now seen corresponding path program 2 times [2020-04-18 19:49:12,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:12,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293947066] [2020-04-18 19:49:12,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:13,118 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 19:49:13,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293947066] [2020-04-18 19:49:13,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:13,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:13,119 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:13,125 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:13,145 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 265 transitions. [2020-04-18 19:49:13,145 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:13,224 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:49:13,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:13,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:49:13,225 INFO L87 Difference]: Start difference. First operand 235 states. Second operand 8 states. [2020-04-18 19:49:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:13,539 INFO L93 Difference]: Finished difference Result 282 states and 604 transitions. [2020-04-18 19:49:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 604 transitions. [2020-04-18 19:49:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:49:13,541 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:13,542 INFO L82 PathProgramCache]: Analyzing trace with hash -660850668, now seen corresponding path program 3 times [2020-04-18 19:49:13,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:13,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518386113] [2020-04-18 19:49:13,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:49:13,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518386113] [2020-04-18 19:49:13,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:13,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:13,658 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:13,661 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:13,671 INFO L259 McrAutomatonBuilder]: Finished intersection with 126 states and 234 transitions. [2020-04-18 19:49:13,672 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:13,814 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:49:13,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:49:13,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:13,815 INFO L87 Difference]: Start difference. First operand 282 states and 604 transitions. Second operand 9 states. [2020-04-18 19:49:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:13,974 INFO L93 Difference]: Finished difference Result 282 states and 604 transitions. [2020-04-18 19:49:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 604 transitions. [2020-04-18 19:49:13,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:13,975 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1697367698] [2020-04-18 19:49:13,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:13,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:13,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1697367698] [2020-04-18 19:49:13,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:49:13,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:13,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:49:13,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:49:13,977 INFO L87 Difference]: Start difference. First operand 3220 states and 10471 transitions. Second operand 15 states. [2020-04-18 19:49:14,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:14,738 INFO L93 Difference]: Finished difference Result 3157 states and 9984 transitions. [2020-04-18 19:49:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-04-18 19:49:14,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-04-18 19:49:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:14,744 INFO L225 Difference]: With dead ends: 3157 [2020-04-18 19:49:14,744 INFO L226 Difference]: Without dead ends: 1255 [2020-04-18 19:49:14,745 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=412, Invalid=1844, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 19:49:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-04-18 19:49:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1073. [2020-04-18 19:49:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-04-18 19:49:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 3091 transitions. [2020-04-18 19:49:14,773 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 3091 transitions. Word has length 42 [2020-04-18 19:49:14,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:14,774 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 3091 transitions. [2020-04-18 19:49:14,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:49:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 3091 transitions. [2020-04-18 19:49:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:14,776 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:49:14,777 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 19:49:14,777 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:49:14,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:14,777 INFO L82 PathProgramCache]: Analyzing trace with hash -199682829, now seen corresponding path program 1 times [2020-04-18 19:49:14,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:49:14,778 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1736028979] [2020-04-18 19:49:14,780 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:14,820 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:49:14,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:49:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:14,841 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:49:14,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:14,842 INFO L82 PathProgramCache]: Analyzing trace with hash 208483833, now seen corresponding path program 2 times [2020-04-18 19:49:14,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:14,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477894068] [2020-04-18 19:49:14,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:14,951 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 19:49:14,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477894068] [2020-04-18 19:49:14,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:14,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:14,952 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:14,957 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:14,990 INFO L259 McrAutomatonBuilder]: Finished intersection with 252 states and 544 transitions. [2020-04-18 19:49:14,991 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:15,082 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:49:15,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:15,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:49:15,083 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 8 states. [2020-04-18 19:49:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:15,439 INFO L93 Difference]: Finished difference Result 2874 states and 9142 transitions. [2020-04-18 19:49:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 9142 transitions. [2020-04-18 19:49:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:15,445 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:49:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1208749951, now seen corresponding path program 3 times [2020-04-18 19:49:15,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:15,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928768467] [2020-04-18 19:49:15,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:15,564 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 19:49:15,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928768467] [2020-04-18 19:49:15,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:15,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:15,565 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:15,568 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:15,593 INFO L259 McrAutomatonBuilder]: Finished intersection with 249 states and 532 transitions. [2020-04-18 19:49:15,593 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:15,692 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:49:15,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:49:15,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:49:15,693 INFO L87 Difference]: Start difference. First operand 2874 states and 9142 transitions. Second operand 12 states. [2020-04-18 19:49:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:15,923 INFO L93 Difference]: Finished difference Result 4114 states and 12586 transitions. [2020-04-18 19:49:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 12586 transitions. [2020-04-18 19:49:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:15,930 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:49:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:15,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1288191075, now seen corresponding path program 4 times [2020-04-18 19:49:15,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:15,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443843809] [2020-04-18 19:49:15,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:16,019 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 19:49:16,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443843809] [2020-04-18 19:49:16,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:16,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:16,020 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:16,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:16,059 INFO L259 McrAutomatonBuilder]: Finished intersection with 242 states and 518 transitions. [2020-04-18 19:49:16,060 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:16,197 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:49:16,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:16,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:49:16,198 INFO L87 Difference]: Start difference. First operand 4114 states and 12586 transitions. Second operand 8 states. [2020-04-18 19:49:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:16,604 INFO L93 Difference]: Finished difference Result 4178 states and 12646 transitions. [2020-04-18 19:49:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 12646 transitions. [2020-04-18 19:49:16,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:16,611 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:49:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:16,612 INFO L82 PathProgramCache]: Analyzing trace with hash -398670689, now seen corresponding path program 5 times [2020-04-18 19:49:16,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:16,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281136391] [2020-04-18 19:49:16,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:16,724 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 19:49:16,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281136391] [2020-04-18 19:49:16,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:16,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:49:16,725 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:16,729 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:17,199 INFO L259 McrAutomatonBuilder]: Finished intersection with 240 states and 522 transitions. [2020-04-18 19:49:17,199 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:17,269 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:49:17,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:49:17,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1738, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:49:17,270 INFO L87 Difference]: Start difference. First operand 4178 states and 12646 transitions. Second operand 8 states. [2020-04-18 19:49:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:17,746 INFO L93 Difference]: Finished difference Result 6758 states and 19776 transitions. [2020-04-18 19:49:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6758 states and 19776 transitions. [2020-04-18 19:49:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:49:17,759 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:49:17,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:49:17,759 INFO L82 PathProgramCache]: Analyzing trace with hash 353378553, now seen corresponding path program 6 times [2020-04-18 19:49:17,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:49:17,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112864620] [2020-04-18 19:49:17,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:49:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:49:17,867 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 19:49:17,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112864620] [2020-04-18 19:49:17,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:49:17,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:49:17,868 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:49:17,875 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:49:17,926 INFO L259 McrAutomatonBuilder]: Finished intersection with 278 states and 654 transitions. [2020-04-18 19:49:17,926 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:49:17,964 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:49:17,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:49:17,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2733, Unknown=0, NotChecked=0, Total=3192 [2020-04-18 19:49:17,967 INFO L87 Difference]: Start difference. First operand 6758 states and 19776 transitions. Second operand 7 states. [2020-04-18 19:49:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:18,152 INFO L93 Difference]: Finished difference Result 8344 states and 23912 transitions. [2020-04-18 19:49:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 8344 states and 23912 transitions. [2020-04-18 19:49:18,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:18,166 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1736028979] [2020-04-18 19:49:18,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:49:18,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:49:18,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1736028979] [2020-04-18 19:49:18,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 19:49:18,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:49:18,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 19:49:18,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=3150, Unknown=0, NotChecked=0, Total=3660 [2020-04-18 19:49:18,169 INFO L87 Difference]: Start difference. First operand 1073 states and 3091 transitions. Second operand 24 states. [2020-04-18 19:49:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:49:21,125 INFO L93 Difference]: Finished difference Result 3687 states and 10613 transitions. [2020-04-18 19:49:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-04-18 19:49:21,125 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 48 [2020-04-18 19:49:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:49:21,126 INFO L225 Difference]: With dead ends: 3687 [2020-04-18 19:49:21,126 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:49:21,131 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6869 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2337, Invalid=16845, Unknown=0, NotChecked=0, Total=19182 [2020-04-18 19:49:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:49:21,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:49:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:49:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:49:21,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:49:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:49:21,132 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:49:21,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 19:49:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:49:21,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:49:21,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:49:21 BasicIcfg [2020-04-18 19:49:21,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:49:21,139 INFO L168 Benchmark]: Toolchain (without parser) took 17280.69 ms. Allocated memory was 137.9 MB in the beginning and 662.2 MB in the end (delta: 524.3 MB). Free memory was 99.9 MB in the beginning and 333.3 MB in the end (delta: -233.4 MB). Peak memory consumption was 290.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:21,139 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 19:49:21,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.97 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 97.7 MB in the beginning and 159.4 MB in the end (delta: -61.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:21,141 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.20 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 156.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:21,142 INFO L168 Benchmark]: Boogie Preprocessor took 27.13 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 155.5 MB in the end (delta: 969.4 kB). Peak memory consumption was 969.4 kB. Max. memory is 7.1 GB. [2020-04-18 19:49:21,142 INFO L168 Benchmark]: RCFGBuilder took 419.72 ms. Allocated memory is still 203.4 MB. Free memory was 155.5 MB in the beginning and 132.8 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:21,143 INFO L168 Benchmark]: TraceAbstraction took 15924.88 ms. Allocated memory was 203.4 MB in the beginning and 662.2 MB in the end (delta: 458.8 MB). Free memory was 132.8 MB in the beginning and 333.3 MB in the end (delta: -200.5 MB). Peak memory consumption was 258.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:49:21,147 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory is still 119.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 833.97 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 97.7 MB in the beginning and 159.4 MB in the end (delta: -61.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.20 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 156.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.13 ms. Allocated memory is still 203.4 MB. Free memory was 156.5 MB in the beginning and 155.5 MB in the end (delta: 969.4 kB). Peak memory consumption was 969.4 kB. Max. memory is 7.1 GB. * RCFGBuilder took 419.72 ms. Allocated memory is still 203.4 MB. Free memory was 155.5 MB in the beginning and 132.8 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15924.88 ms. Allocated memory was 203.4 MB in the beginning and 662.2 MB in the end (delta: 458.8 MB). Free memory was 132.8 MB in the beginning and 333.3 MB in the end (delta: -200.5 MB). Peak memory consumption was 258.3 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: 15.7s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 875 SDtfs, 3493 SDslu, 5632 SDs, 0 SdLazy, 1458 SolverSat, 403 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1213 GetRequests, 933 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8043 ImplicationChecksByTransitivity, 6.2s 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: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 5454 StatesRemovedByMinimization, 6 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...