/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 16:00:49,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 16:00:49,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 16:00:49,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 16:00:49,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 16:00:49,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 16:00:49,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 16:00:49,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 16:00:49,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 16:00:49,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 16:00:49,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 16:00:49,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 16:00:49,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 16:00:49,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 16:00:49,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 16:00:49,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 16:00:49,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 16:00:49,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 16:00:49,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 16:00:49,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 16:00:49,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 16:00:49,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 16:00:49,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 16:00:49,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 16:00:49,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 16:00:49,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 16:00:49,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 16:00:49,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 16:00:49,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 16:00:49,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 16:00:49,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 16:00:49,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 16:00:49,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 16:00:49,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 16:00:49,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 16:00:49,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 16:00:49,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 16:00:49,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 16:00:49,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 16:00:49,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 16:00:49,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 16:00:49,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 16:00:49,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 16:00:49,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 16:00:49,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 16:00:49,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 16:00:49,740 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 16:00:49,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 16:00:49,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 16:00:49,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 16:00:49,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 16:00:49,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 16:00:49,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 16:00:49,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 16:00:49,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 16:00:49,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 16:00:49,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 16:00:49,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 16:00:49,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 16:00:49,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 16:00:49,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 16:00:49,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 16:00:49,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 16:00:49,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 16:00:49,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 16:00:49,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 16:00:49,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 16:00:49,744 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 16:00:49,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 16:00:49,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 16:00:49,745 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 16:00:49,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 16:00:49,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 16:00:50,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 16:00:50,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 16:00:50,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 16:00:50,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 16:00:50,043 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 16:00:50,044 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-04-18 16:00:50,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ca76e6c/be30e2e758d04de1a225e46fff22947e/FLAGcd3eade8a [2020-04-18 16:00:50,522 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 16:00:50,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/forkMultipleTimes.c [2020-04-18 16:00:50,523 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-04-18 16:00:50,523 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-04-18 16:00:50,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ca76e6c/be30e2e758d04de1a225e46fff22947e/FLAGcd3eade8a [2020-04-18 16:00:50,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ca76e6c/be30e2e758d04de1a225e46fff22947e [2020-04-18 16:00:50,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 16:00:50,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 16:00:50,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 16:00:50,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 16:00:50,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 16:00:50,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:00:50" (1/1) ... [2020-04-18 16:00:50,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19eafcc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:50, skipping insertion in model container [2020-04-18 16:00:50,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:00:50" (1/1) ... [2020-04-18 16:00:50,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 16:00:51,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 16:00:51,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:00:51,279 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 16:00:51,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 16:00:51,305 INFO L208 MainTranslator]: Completed translation [2020-04-18 16:00:51,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51 WrapperNode [2020-04-18 16:00:51,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 16:00:51,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 16:00:51,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 16:00:51,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 16:00:51,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 16:00:51,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 16:00:51,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 16:00:51,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 16:00:51,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (1/1) ... [2020-04-18 16:00:51,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 16:00:51,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 16:00:51,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 16:00:51,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 16:00:51,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (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 16:00:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 16:00:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-04-18 16:00:51,430 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-04-18 16:00:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 16:00:51,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 16:00:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 16:00:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 16:00:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 16:00:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 16:00:51,433 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 16:00:51,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 16:00:51,716 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-18 16:00:51,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:00:51 BoogieIcfgContainer [2020-04-18 16:00:51,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 16:00:51,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 16:00:51,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 16:00:51,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 16:00:51,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:00:50" (1/3) ... [2020-04-18 16:00:51,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a68586a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:00:51, skipping insertion in model container [2020-04-18 16:00:51,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:00:51" (2/3) ... [2020-04-18 16:00:51,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a68586a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:00:51, skipping insertion in model container [2020-04-18 16:00:51,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:00:51" (3/3) ... [2020-04-18 16:00:51,728 INFO L109 eAbstractionObserver]: Analyzing ICFG forkMultipleTimes.c [2020-04-18 16:00:51,736 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 16:00:51,736 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 16:00:51,741 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 16:00:51,742 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 16:00:51,772 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,773 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,773 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,773 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,774 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,774 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,774 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,774 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,774 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,775 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,775 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,775 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,775 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,776 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,776 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,776 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,776 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,777 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,777 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,777 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,777 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,777 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,778 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,778 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,778 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,778 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,779 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,779 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,779 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,779 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,780 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,780 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,780 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,780 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,781 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,781 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,781 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,781 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,781 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,782 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,782 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,782 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,782 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,782 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,783 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,787 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,787 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,787 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,787 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,788 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,788 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,788 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,794 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,794 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,795 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,795 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,795 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,795 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,795 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,806 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,806 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,806 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,807 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,807 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~x~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,807 WARN L315 ript$VariableManager]: TermVariabe |fooThread1of1ForFork2_#t~pre0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,807 WARN L315 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 16:00:51,843 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 16:00:51,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 16:00:51,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 16:00:51,860 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 16:00:51,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 16:00:51,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 16:00:51,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 16:00:51,861 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 16:00:51,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 16:00:51,876 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 77 transitions, 196 flow [2020-04-18 16:00:51,878 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-04-18 16:00:51,939 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-04-18 16:00:51,939 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-04-18 16:00:51,945 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-04-18 16:00:51,948 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 77 transitions, 196 flow [2020-04-18 16:00:51,982 INFO L129 PetriNetUnfolder]: 5/85 cut-off events. [2020-04-18 16:00:51,983 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-04-18 16:00:51,983 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 85 events. 5/85 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 50. Up to 6 conditions per place. [2020-04-18 16:00:51,986 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1008 [2020-04-18 16:00:51,987 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 16:00:53,225 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-04-18 16:00:53,371 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1623 [2020-04-18 16:00:53,371 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2020-04-18 16:00:53,377 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 112 flow [2020-04-18 16:00:53,442 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 354 states. [2020-04-18 16:00:53,446 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-04-18 16:00:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:00:53,482 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:00:53,483 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] [2020-04-18 16:00:53,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 16:00:53,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:00:53,494 INFO L82 PathProgramCache]: Analyzing trace with hash -126150362, now seen corresponding path program 1 times [2020-04-18 16:00:53,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:00:53,502 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1214728444] [2020-04-18 16:00:53,521 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:00:53,567 INFO L259 McrAutomatonBuilder]: Finished intersection with 233 states and 592 transitions. [2020-04-18 16:00:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states. [2020-04-18 16:00:53,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:00:53,586 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:00:53,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:00:53,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1786222118, now seen corresponding path program 2 times [2020-04-18 16:00:53,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:00:53,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961496833] [2020-04-18 16:00:53,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:00:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:00:54,410 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 16:00:54,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961496833] [2020-04-18 16:00:54,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:00:54,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 16:00:54,413 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:00:54,417 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:00:54,428 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 54 transitions. [2020-04-18 16:00:54,429 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:00:54,885 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 16:00:54,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 16:00:54,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-04-18 16:00:54,891 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 16 states. [2020-04-18 16:00:55,449 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2020-04-18 16:00:55,883 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-04-18 16:00:56,079 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2020-04-18 16:00:57,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:00:57,246 INFO L93 Difference]: Finished difference Result 372 states and 995 transitions. [2020-04-18 16:00:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 995 transitions. [2020-04-18 16:00:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:00:57,252 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:00:57,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:00:57,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1848783218, now seen corresponding path program 3 times [2020-04-18 16:00:57,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:00:57,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015243472] [2020-04-18 16:00:57,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:00:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:00:57,733 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 16:00:57,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015243472] [2020-04-18 16:00:57,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:00:57,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-18 16:00:57,734 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:00:57,738 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:00:57,747 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-04-18 16:00:57,747 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:00:59,398 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 16:00:59,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-04-18 16:00:59,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2047, Unknown=0, NotChecked=0, Total=2256 [2020-04-18 16:00:59,400 INFO L87 Difference]: Start difference. First operand 372 states and 995 transitions. Second operand 26 states. [2020-04-18 16:01:02,290 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 42 [2020-04-18 16:01:02,934 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 42 [2020-04-18 16:01:03,492 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 46 [2020-04-18 16:01:03,793 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-04-18 16:01:04,790 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2020-04-18 16:01:05,158 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-04-18 16:01:05,628 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-04-18 16:01:05,939 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-04-18 16:01:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:01:06,811 INFO L93 Difference]: Finished difference Result 622 states and 1621 transitions. [2020-04-18 16:01:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1621 transitions. [2020-04-18 16:01:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:01:06,814 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:01:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:01:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1827884256, now seen corresponding path program 4 times [2020-04-18 16:01:06,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:01:06,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410788334] [2020-04-18 16:01:06,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:01:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:01:07,310 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 16:01:07,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410788334] [2020-04-18 16:01:07,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:01:07,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-04-18 16:01:07,311 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:01:07,315 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:01:07,323 INFO L259 McrAutomatonBuilder]: Finished intersection with 44 states and 64 transitions. [2020-04-18 16:01:07,324 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:01:09,655 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 16:01:09,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 16:01:09,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=8385, Unknown=0, NotChecked=0, Total=9312 [2020-04-18 16:01:09,659 INFO L87 Difference]: Start difference. First operand 622 states and 1621 transitions. Second operand 25 states. [2020-04-18 16:01:12,229 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2020-04-18 16:01:12,472 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 33 [2020-04-18 16:01:12,749 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-04-18 16:01:13,235 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 41 [2020-04-18 16:01:13,570 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-04-18 16:01:14,086 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 45 [2020-04-18 16:01:14,570 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-04-18 16:01:15,266 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-04-18 16:01:15,771 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-04-18 16:01:16,008 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-04-18 16:01:16,422 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2020-04-18 16:01:17,217 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2020-04-18 16:01:17,584 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-04-18 16:01:18,153 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-04-18 16:01:18,828 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-04-18 16:01:19,399 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2020-04-18 16:01:20,485 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-04-18 16:01:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:01:22,941 INFO L93 Difference]: Finished difference Result 842 states and 2119 transitions. [2020-04-18 16:01:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2119 transitions. [2020-04-18 16:01:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:01:22,945 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 16:01:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:01:22,946 INFO L82 PathProgramCache]: Analyzing trace with hash 77283458, now seen corresponding path program 5 times [2020-04-18 16:01:22,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:01:22,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715554692] [2020-04-18 16:01:22,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:01:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:01:23,530 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 16:01:23,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715554692] [2020-04-18 16:01:23,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:01:23,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 16:01:23,531 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:01:23,533 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:01:23,540 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 52 transitions. [2020-04-18 16:01:23,540 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:01:25,222 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 16:01:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 16:01:25,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1793, Invalid=20557, Unknown=0, NotChecked=0, Total=22350 [2020-04-18 16:01:25,229 INFO L87 Difference]: Start difference. First operand 842 states and 2119 transitions. Second operand 16 states. [2020-04-18 16:01:25,845 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-04-18 16:01:26,717 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-04-18 16:01:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:01:27,614 INFO L93 Difference]: Finished difference Result 1018 states and 2560 transitions. [2020-04-18 16:01:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 2560 transitions. [2020-04-18 16:01:27,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:01:27,617 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 16:01:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:01:27,617 INFO L82 PathProgramCache]: Analyzing trace with hash -174497468, now seen corresponding path program 6 times [2020-04-18 16:01:27,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:01:27,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534988251] [2020-04-18 16:01:27,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:01:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:01:28,099 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 16:01:28,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534988251] [2020-04-18 16:01:28,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:01:28,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-04-18 16:01:28,101 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:01:28,103 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:01:28,125 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 52 transitions. [2020-04-18 16:01:28,125 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:01:33,321 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 16:01:33,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-04-18 16:01:33,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2049, Invalid=32361, Unknown=0, NotChecked=0, Total=34410 [2020-04-18 16:01:33,329 INFO L87 Difference]: Start difference. First operand 1018 states and 2560 transitions. Second operand 29 states. [2020-04-18 16:01:34,926 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-04-18 16:01:35,401 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2020-04-18 16:01:35,800 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 44 [2020-04-18 16:01:36,160 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 52 [2020-04-18 16:01:36,533 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2020-04-18 16:01:36,825 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 51 [2020-04-18 16:01:37,354 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2020-04-18 16:01:37,774 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 61 [2020-04-18 16:01:38,436 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 58 [2020-04-18 16:01:39,098 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 68 [2020-04-18 16:01:40,452 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-04-18 16:01:40,834 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 55 [2020-04-18 16:01:41,235 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 65 [2020-04-18 16:01:41,789 WARN L192 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 72 [2020-04-18 16:01:42,380 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 36 [2020-04-18 16:01:42,802 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 41 [2020-04-18 16:01:43,082 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 39 [2020-04-18 16:01:43,544 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 44 [2020-04-18 16:01:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:01:43,607 INFO L93 Difference]: Finished difference Result 1018 states and 2560 transitions. [2020-04-18 16:01:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 2560 transitions. [2020-04-18 16:01:43,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 16:01:43,612 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1214728444] [2020-04-18 16:01:43,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 16:01:43,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-04-18 16:01:43,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1214728444] [2020-04-18 16:01:43,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-04-18 16:01:43,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 16:01:43,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-04-18 16:01:43,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2729, Invalid=41581, Unknown=0, NotChecked=0, Total=44310 [2020-04-18 16:01:43,622 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 94 states. [2020-04-18 16:01:45,442 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2020-04-18 16:01:45,992 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 48 [2020-04-18 16:01:46,322 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-04-18 16:01:46,590 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 31 [2020-04-18 16:01:46,915 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 48 [2020-04-18 16:01:47,365 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 58 [2020-04-18 16:01:47,732 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2020-04-18 16:01:48,125 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 48 [2020-04-18 16:01:48,536 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2020-04-18 16:01:48,789 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-04-18 16:01:49,229 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 56 [2020-04-18 16:01:49,527 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 41 [2020-04-18 16:01:50,378 WARN L192 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 58 [2020-04-18 16:01:51,135 WARN L192 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 55 [2020-04-18 16:01:51,670 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 54 [2020-04-18 16:01:52,195 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 56 [2020-04-18 16:01:52,659 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 48 [2020-04-18 16:01:52,995 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2020-04-18 16:01:53,624 WARN L192 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 68 [2020-04-18 16:01:53,978 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2020-04-18 16:01:54,828 WARN L192 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 73 [2020-04-18 16:01:55,483 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 46 [2020-04-18 16:01:56,012 WARN L192 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 58 [2020-04-18 16:01:56,690 WARN L192 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 55 [2020-04-18 16:01:57,021 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 47 [2020-04-18 16:01:57,403 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 50 [2020-04-18 16:01:57,849 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 44 [2020-04-18 16:01:58,626 WARN L192 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 68 [2020-04-18 16:01:59,234 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 59 [2020-04-18 16:01:59,625 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 43 [2020-04-18 16:02:00,112 WARN L192 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 55 [2020-04-18 16:02:01,468 WARN L192 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 85 [2020-04-18 16:02:01,895 WARN L192 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 52 [2020-04-18 16:02:02,217 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-04-18 16:02:02,699 WARN L192 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 60 [2020-04-18 16:02:03,453 WARN L192 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 74 [2020-04-18 16:02:03,842 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2020-04-18 16:02:04,366 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 50 [2020-04-18 16:02:04,850 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 54 [2020-04-18 16:02:05,613 WARN L192 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 71 [2020-04-18 16:02:06,030 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 47 [2020-04-18 16:02:06,437 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 50 [2020-04-18 16:02:06,946 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 61 [2020-04-18 16:02:07,365 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 51 [2020-04-18 16:02:07,654 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-04-18 16:02:08,098 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 51 [2020-04-18 16:02:08,763 WARN L192 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 71 [2020-04-18 16:02:09,446 WARN L192 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 72 [2020-04-18 16:02:09,908 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 54 [2020-04-18 16:02:10,676 WARN L192 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 70 [2020-04-18 16:02:11,742 WARN L192 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 87 [2020-04-18 16:02:12,148 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2020-04-18 16:02:12,721 WARN L192 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 67 [2020-04-18 16:02:13,121 WARN L192 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 60 [2020-04-18 16:02:14,227 WARN L192 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 88 [2020-04-18 16:02:14,806 WARN L192 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 64 [2020-04-18 16:02:15,479 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 70 [2020-04-18 16:02:15,915 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 53 [2020-04-18 16:02:16,884 WARN L192 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 84 [2020-04-18 16:02:17,419 WARN L192 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 61 [2020-04-18 16:02:17,988 WARN L192 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2020-04-18 16:02:18,409 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 54 [2020-04-18 16:02:19,089 WARN L192 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 76 [2020-04-18 16:02:19,729 WARN L192 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 65 [2020-04-18 16:02:20,096 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 51 [2020-04-18 16:02:21,145 WARN L192 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 83 [2020-04-18 16:02:21,654 WARN L192 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 58 [2020-04-18 16:02:22,256 WARN L192 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 64 [2020-04-18 16:02:22,871 WARN L192 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 68 [2020-04-18 16:02:23,385 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 59 [2020-04-18 16:02:23,949 WARN L192 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 65 [2020-04-18 16:02:25,015 WARN L192 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 77 [2020-04-18 16:02:25,916 WARN L192 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 80 [2020-04-18 16:02:26,862 WARN L192 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 84 [2020-04-18 16:02:27,387 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 67 [2020-04-18 16:02:27,791 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 57 [2020-04-18 16:02:28,309 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 61 [2020-04-18 16:02:29,116 WARN L192 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 78 [2020-04-18 16:02:29,975 WARN L192 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 81 [2020-04-18 16:02:30,717 WARN L192 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 71 [2020-04-18 16:02:31,590 WARN L192 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 72 [2020-04-18 16:02:32,395 WARN L192 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 76 [2020-04-18 16:02:33,098 WARN L192 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 68 [2020-04-18 16:02:33,621 WARN L192 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 62 [2020-04-18 16:02:34,472 WARN L192 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 89 [2020-04-18 16:02:34,926 WARN L192 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 60 [2020-04-18 16:02:35,655 WARN L192 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 58 [2020-04-18 16:02:36,530 WARN L192 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 73 [2020-04-18 16:02:37,343 WARN L192 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 75 [2020-04-18 16:02:37,826 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 55 [2020-04-18 16:02:38,740 WARN L192 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 80 [2020-04-18 16:02:39,203 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 52 [2020-04-18 16:02:39,993 WARN L192 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 71 [2020-04-18 16:02:40,726 WARN L192 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 68 [2020-04-18 16:02:41,418 WARN L192 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 71 [2020-04-18 16:02:42,182 WARN L192 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 66 [2020-04-18 16:02:42,895 WARN L192 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 73 [2020-04-18 16:02:43,617 WARN L192 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 69 [2020-04-18 16:02:44,289 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 66 [2020-04-18 16:02:45,136 WARN L192 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 79 [2020-04-18 16:02:45,734 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2020-04-18 16:02:46,495 WARN L192 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 72 [2020-04-18 16:02:47,193 WARN L192 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 67 [2020-04-18 16:02:47,584 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-04-18 16:02:48,088 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 58 [2020-04-18 16:02:48,549 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56 [2020-04-18 16:02:49,030 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 55 [2020-04-18 16:02:49,442 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 54 [2020-04-18 16:02:49,912 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2020-04-18 16:02:50,721 WARN L192 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 74 [2020-04-18 16:02:51,463 WARN L192 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 75 [2020-04-18 16:02:52,114 WARN L192 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 69 [2020-04-18 16:02:52,781 WARN L192 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 80 [2020-04-18 16:02:53,241 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 55 [2020-04-18 16:02:53,957 WARN L192 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 68 [2020-04-18 16:02:54,591 WARN L192 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 72 [2020-04-18 16:02:55,170 WARN L192 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 69 [2020-04-18 16:02:55,913 WARN L192 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 71 [2020-04-18 16:02:56,690 WARN L192 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 69 [2020-04-18 16:02:57,722 WARN L192 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 84 [2020-04-18 16:02:58,725 WARN L192 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 88 [2020-04-18 16:02:59,744 WARN L192 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 87 [2020-04-18 16:03:00,286 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 71 [2020-04-18 16:03:00,677 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 57 [2020-04-18 16:03:01,275 WARN L192 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 65 [2020-04-18 16:03:02,171 WARN L192 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 85 [2020-04-18 16:03:02,744 WARN L192 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 65 [2020-04-18 16:03:03,240 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 64 [2020-04-18 16:03:04,289 WARN L192 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 88 [2020-04-18 16:03:05,222 WARN L192 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 80 [2020-04-18 16:03:05,765 WARN L192 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 66 [2020-04-18 16:03:06,666 WARN L192 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 93 [2020-04-18 16:03:07,076 WARN L192 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 56 [2020-04-18 16:03:07,595 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 62 [2020-04-18 16:03:08,472 WARN L192 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 79 [2020-04-18 16:03:08,953 WARN L192 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 59 [2020-04-18 16:03:09,411 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 55 [2020-04-18 16:03:10,454 WARN L192 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 84 [2020-04-18 16:03:10,979 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 56 [2020-04-18 16:03:11,877 WARN L192 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 75 [2020-04-18 16:03:12,760 WARN L192 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 75 [2020-04-18 16:03:13,507 WARN L192 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 74 [2020-04-18 16:03:14,360 WARN L192 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 77 [2020-04-18 16:03:15,182 WARN L192 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 72 [2020-04-18 16:03:16,019 WARN L192 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 75 [2020-04-18 16:03:16,843 WARN L192 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 78 [2020-04-18 16:03:17,618 WARN L192 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 72 [2020-04-18 16:03:18,458 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 70 [2020-04-18 16:03:19,208 WARN L192 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 84 [2020-04-18 16:03:19,935 WARN L192 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 73 [2020-04-18 16:03:20,594 WARN L192 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 70 [2020-04-18 16:03:21,016 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 62 [2020-04-18 16:03:21,877 WARN L192 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 83 [2020-04-18 16:03:23,777 WARN L192 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 76 [2020-04-18 16:03:24,417 WARN L192 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 71 [2020-04-18 16:03:24,892 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 38 [2020-04-18 16:03:26,039 WARN L192 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 41 [2020-04-18 16:03:26,915 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 53 [2020-04-18 16:03:27,485 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 63 [2020-04-18 16:03:27,956 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 41 [2020-04-18 16:03:28,316 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 54 [2020-04-18 16:03:29,149 WARN L192 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 70 [2020-04-18 16:03:29,939 WARN L192 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 44 [2020-04-18 16:03:30,559 WARN L192 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 70 [2020-04-18 16:03:31,268 WARN L192 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 68 [2020-04-18 16:03:31,966 WARN L192 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 71 [2020-04-18 16:03:32,632 WARN L192 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 69 [2020-04-18 16:03:33,371 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 71 [2020-04-18 16:03:33,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:03:33,921 INFO L93 Difference]: Finished difference Result 1318 states and 3342 transitions. [2020-04-18 16:03:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2020-04-18 16:03:33,923 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 25 [2020-04-18 16:03:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 16:03:33,944 INFO L225 Difference]: With dead ends: 1318 [2020-04-18 16:03:33,944 INFO L226 Difference]: Without dead ends: 1292 [2020-04-18 16:03:33,952 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 87 SyntacticMatches, 6 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54933 ImplicationChecksByTransitivity, 126.4s TimeCoverageRelationStatistics Valid=15541, Invalid=134615, Unknown=0, NotChecked=0, Total=150156 [2020-04-18 16:03:33,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-04-18 16:03:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 651. [2020-04-18 16:03:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-04-18 16:03:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1738 transitions. [2020-04-18 16:03:34,050 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1738 transitions. Word has length 25 [2020-04-18 16:03:34,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 16:03:34,051 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 1738 transitions. [2020-04-18 16:03:34,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-04-18 16:03:34,051 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1738 transitions. [2020-04-18 16:03:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:03:34,054 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 16:03:34,054 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] [2020-04-18 16:03:34,054 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-04-18 16:03:34,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:03:34,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1895995450, now seen corresponding path program 1 times [2020-04-18 16:03:34,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 16:03:34,055 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1642553869] [2020-04-18 16:03:34,056 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:03:34,062 INFO L259 McrAutomatonBuilder]: Finished intersection with 233 states and 592 transitions. [2020-04-18 16:03:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states. [2020-04-18 16:03:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:03:34,065 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 16:03:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:03:34,065 INFO L82 PathProgramCache]: Analyzing trace with hash 16377030, now seen corresponding path program 2 times [2020-04-18 16:03:34,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:03:34,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996827280] [2020-04-18 16:03:34,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:03:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:03:34,470 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 16:03:34,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996827280] [2020-04-18 16:03:34,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:03:34,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 16:03:34,471 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:03:34,474 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:03:34,483 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 54 transitions. [2020-04-18 16:03:34,483 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:03:34,825 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 16:03:34,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 16:03:34,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-04-18 16:03:34,826 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 15 states. [2020-04-18 16:03:35,379 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-04-18 16:03:35,585 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-04-18 16:03:35,836 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-04-18 16:03:36,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:03:36,703 INFO L93 Difference]: Finished difference Result 373 states and 994 transitions. [2020-04-18 16:03:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 994 transitions. [2020-04-18 16:03:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:03:36,705 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 16:03:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:03:36,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2007614720, now seen corresponding path program 3 times [2020-04-18 16:03:36,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:03:36,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546562166] [2020-04-18 16:03:36,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:03:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:03:37,251 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 16:03:37,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546562166] [2020-04-18 16:03:37,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:03:37,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 16:03:37,252 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:03:37,254 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:03:37,261 INFO L259 McrAutomatonBuilder]: Finished intersection with 41 states and 58 transitions. [2020-04-18 16:03:37,262 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:03:38,617 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 16:03:38,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 16:03:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 16:03:38,619 INFO L87 Difference]: Start difference. First operand 373 states and 994 transitions. Second operand 25 states. [2020-04-18 16:03:41,034 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2020-04-18 16:03:41,427 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2020-04-18 16:03:41,846 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 53 [2020-04-18 16:03:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:03:43,641 INFO L93 Difference]: Finished difference Result 584 states and 1506 transitions. [2020-04-18 16:03:43,641 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1506 transitions. [2020-04-18 16:03:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:03:43,643 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 16:03:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:03:43,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1564714170, now seen corresponding path program 4 times [2020-04-18 16:03:43,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:03:43,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915297730] [2020-04-18 16:03:43,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:03:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:03:43,903 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 16:03:43,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915297730] [2020-04-18 16:03:43,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:03:43,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 16:03:43,904 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:03:43,906 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:03:43,912 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 62 transitions. [2020-04-18 16:03:43,912 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:03:44,335 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 16:03:44,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 16:03:44,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=3913, Unknown=0, NotChecked=0, Total=4556 [2020-04-18 16:03:44,336 INFO L87 Difference]: Start difference. First operand 584 states and 1506 transitions. Second operand 9 states. [2020-04-18 16:03:45,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:03:45,103 INFO L93 Difference]: Finished difference Result 699 states and 1802 transitions. [2020-04-18 16:03:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1802 transitions. [2020-04-18 16:03:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:03:45,106 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 16:03:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:03:45,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1907940730, now seen corresponding path program 5 times [2020-04-18 16:03:45,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:03:45,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870262759] [2020-04-18 16:03:45,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:03:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:03:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 16:03:45,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870262759] [2020-04-18 16:03:45,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:03:45,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 16:03:45,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:03:45,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:03:45,872 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 76 transitions. [2020-04-18 16:03:45,872 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:03:48,727 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 16:03:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-04-18 16:03:48,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=898, Invalid=8032, Unknown=0, NotChecked=0, Total=8930 [2020-04-18 16:03:48,729 INFO L87 Difference]: Start difference. First operand 699 states and 1802 transitions. Second operand 26 states. [2020-04-18 16:03:49,465 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2020-04-18 16:03:49,704 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2020-04-18 16:03:49,937 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2020-04-18 16:03:50,300 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 36 [2020-04-18 16:03:50,818 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2020-04-18 16:03:51,249 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-04-18 16:03:51,446 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 38 [2020-04-18 16:03:51,828 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 51 [2020-04-18 16:03:52,092 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 42 [2020-04-18 16:03:52,533 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2020-04-18 16:03:53,065 WARN L192 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 53 [2020-04-18 16:03:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:03:55,195 INFO L93 Difference]: Finished difference Result 772 states and 1918 transitions. [2020-04-18 16:03:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1918 transitions. [2020-04-18 16:03:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:03:55,198 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 16:03:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:03:55,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1692561630, now seen corresponding path program 6 times [2020-04-18 16:03:55,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:03:55,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906030313] [2020-04-18 16:03:55,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:03:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:03:55,729 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 16:03:55,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906030313] [2020-04-18 16:03:55,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:03:55,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 16:03:55,731 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:03:55,734 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:03:55,740 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 52 transitions. [2020-04-18 16:03:55,741 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:03:56,907 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 16:03:56,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 16:03:56,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1288, Invalid=13232, Unknown=0, NotChecked=0, Total=14520 [2020-04-18 16:03:56,909 INFO L87 Difference]: Start difference. First operand 772 states and 1918 transitions. Second operand 15 states. [2020-04-18 16:03:58,030 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-04-18 16:03:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:03:58,933 INFO L93 Difference]: Finished difference Result 806 states and 1981 transitions. [2020-04-18 16:03:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1981 transitions. [2020-04-18 16:03:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:03:58,935 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 16:03:58,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:03:58,936 INFO L82 PathProgramCache]: Analyzing trace with hash -145869278, now seen corresponding path program 7 times [2020-04-18 16:03:58,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:03:58,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026441550] [2020-04-18 16:03:58,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:03:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:03:59,694 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 16:03:59,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026441550] [2020-04-18 16:03:59,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:03:59,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 16:03:59,695 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:03:59,698 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:03:59,705 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 52 transitions. [2020-04-18 16:03:59,705 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:04:03,218 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 16:04:03,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 16:04:03,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1526, Invalid=19066, Unknown=0, NotChecked=0, Total=20592 [2020-04-18 16:04:03,220 INFO L87 Difference]: Start difference. First operand 806 states and 1981 transitions. Second operand 24 states. [2020-04-18 16:04:03,555 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2020-04-18 16:04:03,912 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-04-18 16:04:04,215 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 37 [2020-04-18 16:04:04,768 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 51 [2020-04-18 16:04:04,999 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2020-04-18 16:04:05,453 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-04-18 16:04:06,017 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-04-18 16:04:06,301 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 40 [2020-04-18 16:04:06,727 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-04-18 16:04:07,051 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 51 [2020-04-18 16:04:07,630 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 47 [2020-04-18 16:04:08,161 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 55 [2020-04-18 16:04:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:04:10,196 INFO L93 Difference]: Finished difference Result 882 states and 2123 transitions. [2020-04-18 16:04:10,196 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 2123 transitions. [2020-04-18 16:04:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:04:10,198 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 16:04:10,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:04:10,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1039513920, now seen corresponding path program 8 times [2020-04-18 16:04:10,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:04:10,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584563948] [2020-04-18 16:04:10,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:04:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:04:10,691 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 16:04:10,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584563948] [2020-04-18 16:04:10,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:04:10,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 16:04:10,692 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:04:10,694 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:04:10,699 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 41 transitions. [2020-04-18 16:04:10,699 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:04:11,340 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 16:04:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 16:04:11,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1917, Invalid=24165, Unknown=0, NotChecked=0, Total=26082 [2020-04-18 16:04:11,342 INFO L87 Difference]: Start difference. First operand 882 states and 2123 transitions. Second operand 19 states. [2020-04-18 16:04:13,926 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2020-04-18 16:04:14,338 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2020-04-18 16:04:16,544 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-04-18 16:04:16,792 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-04-18 16:04:17,372 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-04-18 16:04:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:04:19,100 INFO L93 Difference]: Finished difference Result 1535 states and 3586 transitions. [2020-04-18 16:04:19,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 3586 transitions. [2020-04-18 16:04:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:04:19,103 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 16:04:19,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:04:19,104 INFO L82 PathProgramCache]: Analyzing trace with hash -939839930, now seen corresponding path program 9 times [2020-04-18 16:04:19,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:04:19,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975470251] [2020-04-18 16:04:19,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:04:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:04:19,804 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 16:04:19,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975470251] [2020-04-18 16:04:19,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:04:19,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 16:04:19,805 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:04:19,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:04:19,814 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 71 transitions. [2020-04-18 16:04:19,814 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:04:20,554 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 16:04:20,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 16:04:20,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2440, Invalid=32342, Unknown=0, NotChecked=0, Total=34782 [2020-04-18 16:04:20,557 INFO L87 Difference]: Start difference. First operand 1535 states and 3586 transitions. Second operand 20 states. [2020-04-18 16:04:24,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:04:24,111 INFO L93 Difference]: Finished difference Result 1629 states and 3728 transitions. [2020-04-18 16:04:24,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 3728 transitions. [2020-04-18 16:04:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:04:24,114 INFO L105 Mcr]: ---- MCR iteration 8 ---- [2020-04-18 16:04:24,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:04:24,115 INFO L82 PathProgramCache]: Analyzing trace with hash -207974222, now seen corresponding path program 10 times [2020-04-18 16:04:24,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:04:24,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140124143] [2020-04-18 16:04:24,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:04:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:04:24,699 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-04-18 16:04:25,100 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 16:04:25,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140124143] [2020-04-18 16:04:25,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:04:25,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 16:04:25,101 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:04:25,103 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:04:25,107 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 31 transitions. [2020-04-18 16:04:25,107 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:04:25,475 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 16:04:25,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 16:04:25,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2543, Invalid=34899, Unknown=0, NotChecked=0, Total=37442 [2020-04-18 16:04:25,477 INFO L87 Difference]: Start difference. First operand 1629 states and 3728 transitions. Second operand 17 states. [2020-04-18 16:04:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:04:28,566 INFO L93 Difference]: Finished difference Result 1883 states and 4322 transitions. [2020-04-18 16:04:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 4322 transitions. [2020-04-18 16:04:28,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:04:28,570 INFO L105 Mcr]: ---- MCR iteration 9 ---- [2020-04-18 16:04:28,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:04:28,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1992503214, now seen corresponding path program 11 times [2020-04-18 16:04:28,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:04:28,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175007442] [2020-04-18 16:04:28,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:04:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:04:29,062 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 16:04:29,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175007442] [2020-04-18 16:04:29,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:04:29,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-04-18 16:04:29,063 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:04:29,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:04:29,071 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 55 transitions. [2020-04-18 16:04:29,071 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:04:32,018 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 16:04:32,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 16:04:32,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3085, Invalid=40805, Unknown=0, NotChecked=0, Total=43890 [2020-04-18 16:04:32,021 INFO L87 Difference]: Start difference. First operand 1883 states and 4322 transitions. Second operand 17 states. [2020-04-18 16:04:32,579 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-04-18 16:04:33,397 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 36 [2020-04-18 16:04:33,737 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2020-04-18 16:04:34,119 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 47 [2020-04-18 16:04:34,659 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-04-18 16:04:35,112 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-04-18 16:04:37,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:04:37,166 INFO L93 Difference]: Finished difference Result 1989 states and 4586 transitions. [2020-04-18 16:04:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 4586 transitions. [2020-04-18 16:04:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:04:37,169 INFO L105 Mcr]: ---- MCR iteration 10 ---- [2020-04-18 16:04:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:04:37,169 INFO L82 PathProgramCache]: Analyzing trace with hash 278472332, now seen corresponding path program 12 times [2020-04-18 16:04:37,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:04:37,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797963486] [2020-04-18 16:04:37,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:04:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:04:37,644 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 16:04:37,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797963486] [2020-04-18 16:04:37,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:04:37,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 16:04:37,645 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:04:37,648 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:04:37,655 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 59 transitions. [2020-04-18 16:04:37,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:04:40,052 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 16:04:40,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 16:04:40,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3634, Invalid=51356, Unknown=0, NotChecked=0, Total=54990 [2020-04-18 16:04:40,054 INFO L87 Difference]: Start difference. First operand 1989 states and 4586 transitions. Second operand 25 states. [2020-04-18 16:04:43,223 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 48 [2020-04-18 16:04:43,447 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-04-18 16:04:44,645 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 53 [2020-04-18 16:04:45,225 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-04-18 16:04:45,561 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2020-04-18 16:04:45,824 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2020-04-18 16:04:46,839 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 45 [2020-04-18 16:04:47,511 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 45 [2020-04-18 16:04:48,160 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 60 [2020-04-18 16:04:48,805 WARN L192 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 61 [2020-04-18 16:04:49,733 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 51 [2020-04-18 16:04:50,530 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 51 [2020-04-18 16:04:50,830 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2020-04-18 16:04:51,979 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-04-18 16:04:52,944 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2020-04-18 16:04:53,782 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2020-04-18 16:04:54,646 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2020-04-18 16:04:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 16:04:57,720 INFO L93 Difference]: Finished difference Result 2557 states and 5642 transitions. [2020-04-18 16:04:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 5642 transitions. [2020-04-18 16:04:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 16:04:57,724 INFO L105 Mcr]: ---- MCR iteration 11 ---- [2020-04-18 16:04:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 16:04:57,724 INFO L82 PathProgramCache]: Analyzing trace with hash 378146322, now seen corresponding path program 13 times [2020-04-18 16:04:57,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 16:04:57,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115722175] [2020-04-18 16:04:57,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 16:04:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 16:04:58,371 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 16:04:58,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115722175] [2020-04-18 16:04:58,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 16:04:58,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-04-18 16:04:58,372 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 16:04:58,374 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 16:04:58,382 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 104 transitions. [2020-04-18 16:04:58,382 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 16:05:01,169 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 16:05:01,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-04-18 16:05:01,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4608, Invalid=75198, Unknown=0, NotChecked=0, Total=79806 [2020-04-18 16:05:01,173 INFO L87 Difference]: Start difference. First operand 2557 states and 5642 transitions. Second operand 26 states. [2020-04-18 16:05:04,677 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-04-18 16:05:05,864 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-04-18 16:05:06,366 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2020-04-18 16:05:06,910 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-04-18 16:05:08,141 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2020-04-18 16:05:08,440 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-04-18 16:05:08,829 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-04-18 16:05:09,460 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-04-18 16:05:10,431 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 Received shutdown request... [2020-04-18 16:05:10,741 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyModuleMcr.getOrConstruct(StrategyModuleMcr.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyModuleMcr.isCorrect(StrategyModuleMcr.java:64) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1067) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.Mcr.exploreInterleavings(Mcr.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.Mcr.(Mcr.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyModuleMcr.getOrConstruct(StrategyModuleMcr.java:126) ... 23 more [2020-04-18 16:05:10,745 INFO L168 Benchmark]: Toolchain (without parser) took 259788.49 ms. Allocated memory was 146.3 MB in the beginning and 513.8 MB in the end (delta: 367.5 MB). Free memory was 102.0 MB in the beginning and 400.8 MB in the end (delta: -298.7 MB). Peak memory consumption was 429.3 MB. Max. memory is 7.1 GB. [2020-04-18 16:05:10,745 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 16:05:10,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.38 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.0 MB in the beginning and 179.0 MB in the end (delta: -79.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-04-18 16:05:10,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 177.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-04-18 16:05:10,746 INFO L168 Benchmark]: Boogie Preprocessor took 20.95 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 176.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 16:05:10,747 INFO L168 Benchmark]: RCFGBuilder took 353.65 ms. Allocated memory is still 202.4 MB. Free memory was 176.1 MB in the beginning and 158.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-04-18 16:05:10,747 INFO L168 Benchmark]: TraceAbstraction took 259022.54 ms. Allocated memory was 202.4 MB in the beginning and 513.8 MB in the end (delta: 311.4 MB). Free memory was 158.3 MB in the beginning and 400.8 MB in the end (delta: -242.5 MB). Peak memory consumption was 429.5 MB. Max. memory is 7.1 GB. [2020-04-18 16:05:10,749 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.38 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.0 MB in the beginning and 179.0 MB in the end (delta: -79.0 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 177.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.95 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 176.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.65 ms. Allocated memory is still 202.4 MB. Free memory was 176.1 MB in the beginning and 158.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259022.54 ms. Allocated memory was 202.4 MB in the beginning and 513.8 MB in the end (delta: 311.4 MB). Free memory was 158.3 MB in the beginning and 400.8 MB in the end (delta: -242.5 MB). Peak memory consumption was 429.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 81 ProgramPointsBefore, 39 ProgramPointsAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 494 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1623 CheckedPairsTotal, 43 TotalNumberOfCompositions - ExceptionOrErrorResult: RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user.: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.StrategyModuleMcr.getOrConstruct(StrategyModuleMcr.java:128) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown