/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:14:48,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:14:48,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:14:48,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:14:48,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:14:48,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:14:48,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:14:48,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:14:48,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:14:48,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:14:48,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:14:48,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:14:48,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:14:48,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:14:48,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:14:48,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:14:48,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:14:48,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:14:48,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:14:48,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:14:48,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:14:48,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:14:48,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:14:48,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:14:48,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:14:48,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:14:48,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:14:48,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:14:48,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:14:48,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:14:48,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:14:48,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:14:48,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:14:48,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:14:48,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:14:48,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:14:48,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:14:48,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:14:48,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:14:48,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:14:48,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:14:48,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 11:14:48,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:14:48,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:14:48,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:14:48,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:14:48,163 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:14:48,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:14:48,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:14:48,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:14:48,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:14:48,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:14:48,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:14:48,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:14:48,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:14:48,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:14:48,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:14:48,165 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:14:48,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:14:48,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:14:48,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:14:48,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:14:48,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:14:48,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:14:48,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:14:48,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:14:48,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:14:48,167 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:14:48,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:14:48,168 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:14:48,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:14:48,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:14:48,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:14:48,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:14:48,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:14:48,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:14:48,453 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:14:48,454 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2020-04-18 11:14:48,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9490305e1/949b300b43014158a6e88484beee96b8/FLAG65d710718 [2020-04-18 11:14:48,998 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:14:48,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_tso.opt.i [2020-04-18 11:14:49,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9490305e1/949b300b43014158a6e88484beee96b8/FLAG65d710718 [2020-04-18 11:14:49,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9490305e1/949b300b43014158a6e88484beee96b8 [2020-04-18 11:14:49,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:14:49,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:14:49,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:14:49,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:14:49,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:14:49,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:14:49" (1/1) ... [2020-04-18 11:14:49,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:49, skipping insertion in model container [2020-04-18 11:14:49,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:14:49" (1/1) ... [2020-04-18 11:14:49,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:14:49,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:14:49,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:14:49,955 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:14:50,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:14:50,100 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:14:50,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50 WrapperNode [2020-04-18 11:14:50,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:14:50,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:14:50,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:14:50,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:14:50,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:14:50,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:14:50,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:14:50,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:14:50,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... [2020-04-18 11:14:50,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:14:50,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:14:50,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:14:50,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:14:50,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:14:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:14:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 11:14:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:14:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:14:50,232 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 11:14:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 11:14:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 11:14:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 11:14:50,233 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 11:14:50,233 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 11:14:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 11:14:50,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 11:14:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 11:14:50,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:14:50,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:14:50,236 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:14:50,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:14:50,634 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 11:14:50,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:14:50 BoogieIcfgContainer [2020-04-18 11:14:50,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:14:50,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:14:50,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:14:50,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:14:50,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:14:49" (1/3) ... [2020-04-18 11:14:50,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4a16ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:14:50, skipping insertion in model container [2020-04-18 11:14:50,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:14:50" (2/3) ... [2020-04-18 11:14:50,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4a16ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:14:50, skipping insertion in model container [2020-04-18 11:14:50,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:14:50" (3/3) ... [2020-04-18 11:14:50,646 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2020-04-18 11:14:50,656 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:14:50,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:14:50,664 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:14:50,665 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:14:50,692 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,693 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,693 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,694 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,694 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,694 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,695 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,695 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,695 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,696 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,696 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,696 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,697 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,697 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,697 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,697 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,698 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,698 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,699 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,699 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,699 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,699 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,700 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,700 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,704 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,705 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,705 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,705 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,711 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,711 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,711 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,712 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,715 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,715 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,715 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,715 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,719 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,719 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,720 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,720 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:14:50,734 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 11:14:50,753 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:14:50,753 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:14:50,753 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:14:50,753 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:14:50,754 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:14:50,754 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:14:50,754 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:14:50,754 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:14:50,769 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 82 transitions, 184 flow [2020-04-18 11:14:50,771 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 11:14:50,818 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 11:14:50,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:14:50,824 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 11:14:50,828 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 11:14:50,851 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 11:14:50,852 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 11:14:50,853 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-04-18 11:14:50,856 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-04-18 11:14:50,857 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 11:14:52,647 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2807 [2020-04-18 11:14:52,648 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-04-18 11:14:52,652 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-04-18 11:14:52,758 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-04-18 11:14:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-04-18 11:14:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:14:52,786 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:14:52,787 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:14:52,787 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:14:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 1 times [2020-04-18 11:14:52,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:14:52,805 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1925162804] [2020-04-18 11:14:52,821 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:52,838 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:14:52,840 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-04-18 11:14:52,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:14:52,841 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:14:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:52,843 INFO L82 PathProgramCache]: Analyzing trace with hash 91051740, now seen corresponding path program 2 times [2020-04-18 11:14:52,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:52,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990047056] [2020-04-18 11:14:52,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:53,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990047056] [2020-04-18 11:14:53,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:53,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:14:53,080 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:53,081 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:53,085 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:14:53,085 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:53,088 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:14:53,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:14:53,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:14:53,094 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-04-18 11:14:53,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:53,098 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-04-18 11:14:53,098 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-04-18 11:14:53,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:14:53,099 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1925162804] [2020-04-18 11:14:53,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:14:53,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:14:53,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1925162804] [2020-04-18 11:14:53,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 11:14:53,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:14:53,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 11:14:53,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:14:53,107 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-04-18 11:14:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:53,142 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-04-18 11:14:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 11:14:53,143 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-18 11:14:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:14:53,169 INFO L225 Difference]: With dead ends: 850 [2020-04-18 11:14:53,169 INFO L226 Difference]: Without dead ends: 706 [2020-04-18 11:14:53,170 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 11:14:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-04-18 11:14:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-04-18 11:14:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-04-18 11:14:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-04-18 11:14:53,317 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-04-18 11:14:53,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:14:53,318 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-04-18 11:14:53,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 11:14:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-04-18 11:14:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:14:53,321 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:14:53,321 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:14:53,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:14:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:53,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 1 times [2020-04-18 11:14:53,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:14:53,322 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1779216283] [2020-04-18 11:14:53,323 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:53,323 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:14:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 11:14:53,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:14:53,324 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:14:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:53,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1472387704, now seen corresponding path program 2 times [2020-04-18 11:14:53,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:53,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301964641] [2020-04-18 11:14:53,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:53,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301964641] [2020-04-18 11:14:53,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:53,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:14:53,492 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:53,493 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:53,495 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-04-18 11:14:53,495 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:53,514 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:14:53,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:14:53,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:14:53,516 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-04-18 11:14:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:53,532 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-04-18 11:14:53,532 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-04-18 11:14:53,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:14:53,533 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1779216283] [2020-04-18 11:14:53,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:14:53,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:14:53,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1779216283] [2020-04-18 11:14:53,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:14:53,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:14:53,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:14:53,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:14:53,537 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-04-18 11:14:53,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:53,566 INFO L93 Difference]: Finished difference Result 778 states and 2592 transitions. [2020-04-18 11:14:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:14:53,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 11:14:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:14:53,574 INFO L225 Difference]: With dead ends: 778 [2020-04-18 11:14:53,575 INFO L226 Difference]: Without dead ends: 634 [2020-04-18 11:14:53,576 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:14:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-04-18 11:14:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2020-04-18 11:14:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-04-18 11:14:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 2148 transitions. [2020-04-18 11:14:53,631 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 2148 transitions. Word has length 11 [2020-04-18 11:14:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:14:53,632 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 2148 transitions. [2020-04-18 11:14:53,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:14:53,632 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 2148 transitions. [2020-04-18 11:14:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:14:53,635 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:14:53,635 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:14:53,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:14:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:53,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 1 times [2020-04-18 11:14:53,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:14:53,636 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1997482023] [2020-04-18 11:14:53,637 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:53,637 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 11:14:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 11:14:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:14:53,638 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:14:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:53,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1606888751, now seen corresponding path program 2 times [2020-04-18 11:14:53,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:53,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504694634] [2020-04-18 11:14:53,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:53,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504694634] [2020-04-18 11:14:53,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:53,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:14:53,729 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:53,730 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:53,732 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-04-18 11:14:53,732 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:53,748 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:14:53,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:14:53,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:14:53,749 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-04-18 11:14:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:53,760 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-04-18 11:14:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2020-04-18 11:14:53,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:14:53,761 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1997482023] [2020-04-18 11:14:53,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:14:53,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:14:53,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1997482023] [2020-04-18 11:14:53,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:14:53,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:14:53,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:14:53,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:14:53,763 INFO L87 Difference]: Start difference. First operand 634 states and 2148 transitions. Second operand 4 states. [2020-04-18 11:14:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:53,792 INFO L93 Difference]: Finished difference Result 688 states and 2256 transitions. [2020-04-18 11:14:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:14:53,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-18 11:14:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:14:53,804 INFO L225 Difference]: With dead ends: 688 [2020-04-18 11:14:53,805 INFO L226 Difference]: Without dead ends: 580 [2020-04-18 11:14:53,805 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:14:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-04-18 11:14:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-04-18 11:14:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-04-18 11:14:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1932 transitions. [2020-04-18 11:14:53,827 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1932 transitions. Word has length 12 [2020-04-18 11:14:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:14:53,828 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 1932 transitions. [2020-04-18 11:14:53,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:14:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1932 transitions. [2020-04-18 11:14:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:14:53,830 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:14:53,830 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:14:53,830 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:14:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:53,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 1 times [2020-04-18 11:14:53,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:14:53,831 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1480052735] [2020-04-18 11:14:53,832 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:53,832 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 58 transitions. [2020-04-18 11:14:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-04-18 11:14:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 11:14:53,835 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:14:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:53,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1718865431, now seen corresponding path program 2 times [2020-04-18 11:14:53,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:53,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253423037] [2020-04-18 11:14:53,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:53,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253423037] [2020-04-18 11:14:53,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:53,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:14:53,966 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:53,968 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:53,972 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 44 transitions. [2020-04-18 11:14:53,973 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:54,120 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:14:54,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:14:54,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:14:54,121 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 8 states. [2020-04-18 11:14:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:54,158 INFO L93 Difference]: Finished difference Result 34 states and 58 transitions. [2020-04-18 11:14:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2020-04-18 11:14:54,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:14:54,160 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1480052735] [2020-04-18 11:14:54,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:14:54,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:14:54,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1480052735] [2020-04-18 11:14:54,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 11:14:54,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:14:54,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:14:54,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:14:54,164 INFO L87 Difference]: Start difference. First operand 580 states and 1932 transitions. Second operand 8 states. [2020-04-18 11:14:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:54,238 INFO L93 Difference]: Finished difference Result 751 states and 2457 transitions. [2020-04-18 11:14:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:14:54,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 11:14:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:14:54,242 INFO L225 Difference]: With dead ends: 751 [2020-04-18 11:14:54,242 INFO L226 Difference]: Without dead ends: 358 [2020-04-18 11:14:54,243 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:14:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-04-18 11:14:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-04-18 11:14:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-04-18 11:14:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1128 transitions. [2020-04-18 11:14:54,257 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1128 transitions. Word has length 13 [2020-04-18 11:14:54,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:14:54,257 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 1128 transitions. [2020-04-18 11:14:54,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 11:14:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1128 transitions. [2020-04-18 11:14:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:14:54,259 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:14:54,259 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:14:54,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:14:54,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:54,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1081404616, now seen corresponding path program 1 times [2020-04-18 11:14:54,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:14:54,260 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1078072224] [2020-04-18 11:14:54,261 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:54,262 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 102 transitions. [2020-04-18 11:14:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-04-18 11:14:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 11:14:54,263 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:14:54,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:54,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1745220586, now seen corresponding path program 2 times [2020-04-18 11:14:54,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:54,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568044074] [2020-04-18 11:14:54,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:54,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568044074] [2020-04-18 11:14:54,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:54,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:14:54,337 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:54,339 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:54,343 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-04-18 11:14:54,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:54,375 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:14:54,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:14:54,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:14:54,376 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 6 states. [2020-04-18 11:14:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:54,406 INFO L93 Difference]: Finished difference Result 50 states and 102 transitions. [2020-04-18 11:14:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 102 transitions. [2020-04-18 11:14:54,406 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:14:54,407 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1078072224] [2020-04-18 11:14:54,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:14:54,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:14:54,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1078072224] [2020-04-18 11:14:54,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:14:54,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:14:54,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:14:54,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:14:54,408 INFO L87 Difference]: Start difference. First operand 358 states and 1128 transitions. Second operand 6 states. [2020-04-18 11:14:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:54,459 INFO L93 Difference]: Finished difference Result 496 states and 1517 transitions. [2020-04-18 11:14:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 11:14:54,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 11:14:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:14:54,462 INFO L225 Difference]: With dead ends: 496 [2020-04-18 11:14:54,462 INFO L226 Difference]: Without dead ends: 262 [2020-04-18 11:14:54,463 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-04-18 11:14:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-04-18 11:14:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2020-04-18 11:14:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-04-18 11:14:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 771 transitions. [2020-04-18 11:14:54,472 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 771 transitions. Word has length 14 [2020-04-18 11:14:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:14:54,472 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 771 transitions. [2020-04-18 11:14:54,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:14:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 771 transitions. [2020-04-18 11:14:54,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:14:54,473 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:14:54,473 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:14:54,474 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:14:54,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:54,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 1 times [2020-04-18 11:14:54,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:14:54,475 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [465886083] [2020-04-18 11:14:54,475 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:54,478 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 240 transitions. [2020-04-18 11:14:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-04-18 11:14:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:14:54,479 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:14:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1852625697, now seen corresponding path program 2 times [2020-04-18 11:14:54,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:54,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174451835] [2020-04-18 11:14:54,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:54,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174451835] [2020-04-18 11:14:54,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:54,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:14:54,546 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:54,547 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:54,552 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 89 transitions. [2020-04-18 11:14:54,553 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:54,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:14:54,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:14:54,866 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 11:14:54,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:14:54,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:14:54,867 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 10 states. [2020-04-18 11:14:54,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:54,970 INFO L93 Difference]: Finished difference Result 114 states and 276 transitions. [2020-04-18 11:14:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 276 transitions. [2020-04-18 11:14:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:14:54,971 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:14:54,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1382462049, now seen corresponding path program 3 times [2020-04-18 11:14:54,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:54,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258608383] [2020-04-18 11:14:54,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:55,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258608383] [2020-04-18 11:14:55,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:55,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:14:55,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:55,037 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:55,043 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 11:14:55,043 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:55,116 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 11:14:55,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:14:55,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-04-18 11:14:55,117 INFO L87 Difference]: Start difference. First operand 114 states and 276 transitions. Second operand 6 states. [2020-04-18 11:14:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:55,209 INFO L93 Difference]: Finished difference Result 145 states and 324 transitions. [2020-04-18 11:14:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 324 transitions. [2020-04-18 11:14:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:14:55,211 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:14:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:55,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1257194017, now seen corresponding path program 4 times [2020-04-18 11:14:55,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:55,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567714453] [2020-04-18 11:14:55,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:55,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567714453] [2020-04-18 11:14:55,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:55,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:14:55,264 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:55,266 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:55,275 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-04-18 11:14:55,276 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:55,313 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:14:55,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:14:55,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-04-18 11:14:55,314 INFO L87 Difference]: Start difference. First operand 145 states and 324 transitions. Second operand 4 states. [2020-04-18 11:14:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:55,332 INFO L93 Difference]: Finished difference Result 145 states and 324 transitions. [2020-04-18 11:14:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 324 transitions. [2020-04-18 11:14:55,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:14:55,333 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [465886083] [2020-04-18 11:14:55,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:14:55,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:14:55,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [465886083] [2020-04-18 11:14:55,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 11:14:55,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:14:55,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 11:14:55,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2020-04-18 11:14:55,334 INFO L87 Difference]: Start difference. First operand 262 states and 771 transitions. Second operand 15 states. [2020-04-18 11:14:56,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:56,057 INFO L93 Difference]: Finished difference Result 319 states and 873 transitions. [2020-04-18 11:14:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-04-18 11:14:56,058 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2020-04-18 11:14:56,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:14:56,059 INFO L225 Difference]: With dead ends: 319 [2020-04-18 11:14:56,060 INFO L226 Difference]: Without dead ends: 238 [2020-04-18 11:14:56,061 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=435, Invalid=1727, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 11:14:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-04-18 11:14:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2020-04-18 11:14:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-04-18 11:14:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 659 transitions. [2020-04-18 11:14:56,068 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 659 transitions. Word has length 15 [2020-04-18 11:14:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:14:56,069 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 659 transitions. [2020-04-18 11:14:56,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 11:14:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 659 transitions. [2020-04-18 11:14:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:14:56,070 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:14:56,070 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:14:56,070 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:14:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:56,072 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 1 times [2020-04-18 11:14:56,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:14:56,072 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1808789240] [2020-04-18 11:14:56,073 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:56,079 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 378 transitions. [2020-04-18 11:14:56,080 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 11:14:56,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:14:56,081 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:14:56,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:56,081 INFO L82 PathProgramCache]: Analyzing trace with hash -85600614, now seen corresponding path program 2 times [2020-04-18 11:14:56,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:56,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127120004] [2020-04-18 11:14:56,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:56,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127120004] [2020-04-18 11:14:56,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:56,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:14:56,190 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:56,192 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:56,196 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 78 transitions. [2020-04-18 11:14:56,197 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:56,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:14:56,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:14:56,533 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:14:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:14:56,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:14:56,534 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 14 states. [2020-04-18 11:14:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:56,882 INFO L93 Difference]: Finished difference Result 168 states and 437 transitions. [2020-04-18 11:14:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 437 transitions. [2020-04-18 11:14:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:14:56,883 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:14:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:56,883 INFO L82 PathProgramCache]: Analyzing trace with hash -466783372, now seen corresponding path program 3 times [2020-04-18 11:14:56,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:56,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053679833] [2020-04-18 11:14:56,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:56,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053679833] [2020-04-18 11:14:56,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:56,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:14:56,925 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:56,926 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:56,930 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 44 transitions. [2020-04-18 11:14:56,930 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:56,998 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:14:56,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:14:56,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2020-04-18 11:14:56,999 INFO L87 Difference]: Start difference. First operand 168 states and 437 transitions. Second operand 6 states. [2020-04-18 11:14:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:57,095 INFO L93 Difference]: Finished difference Result 230 states and 564 transitions. [2020-04-18 11:14:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 564 transitions. [2020-04-18 11:14:57,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 11:14:57,096 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:14:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:57,096 INFO L82 PathProgramCache]: Analyzing trace with hash -857649028, now seen corresponding path program 4 times [2020-04-18 11:14:57,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:57,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287611938] [2020-04-18 11:14:57,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:57,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287611938] [2020-04-18 11:14:57,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:57,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:14:57,154 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:57,156 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:57,163 INFO L259 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-04-18 11:14:57,163 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:57,395 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:14:57,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:14:57,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=736, Unknown=0, NotChecked=0, Total=930 [2020-04-18 11:14:57,396 INFO L87 Difference]: Start difference. First operand 230 states and 564 transitions. Second operand 7 states. [2020-04-18 11:14:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:57,461 INFO L93 Difference]: Finished difference Result 230 states and 564 transitions. [2020-04-18 11:14:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 564 transitions. [2020-04-18 11:14:57,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:14:57,463 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1808789240] [2020-04-18 11:14:57,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:14:57,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:14:57,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1808789240] [2020-04-18 11:14:57,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 11:14:57,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:14:57,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 11:14:57,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 11:14:57,465 INFO L87 Difference]: Start difference. First operand 238 states and 659 transitions. Second operand 22 states. [2020-04-18 11:14:58,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:58,465 INFO L93 Difference]: Finished difference Result 247 states and 617 transitions. [2020-04-18 11:14:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-04-18 11:14:58,471 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 16 [2020-04-18 11:14:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:14:58,473 INFO L225 Difference]: With dead ends: 247 [2020-04-18 11:14:58,473 INFO L226 Difference]: Without dead ends: 182 [2020-04-18 11:14:58,474 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=578, Invalid=2728, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 11:14:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-18 11:14:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-18 11:14:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-18 11:14:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 443 transitions. [2020-04-18 11:14:58,480 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 443 transitions. Word has length 16 [2020-04-18 11:14:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:14:58,480 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 443 transitions. [2020-04-18 11:14:58,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 11:14:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 443 transitions. [2020-04-18 11:14:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:14:58,481 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:14:58,481 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:14:58,481 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:14:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 1 times [2020-04-18 11:14:58,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:14:58,482 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [501174401] [2020-04-18 11:14:58,483 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:58,486 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 542 transitions. [2020-04-18 11:14:58,487 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 11:14:58,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:14:58,488 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:14:58,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:58,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1641348500, now seen corresponding path program 2 times [2020-04-18 11:14:58,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:58,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519132408] [2020-04-18 11:14:58,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:58,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519132408] [2020-04-18 11:14:58,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:58,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:14:58,546 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:58,547 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:58,554 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 83 transitions. [2020-04-18 11:14:58,554 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:58,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:14:58,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 11:14:58,875 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 11:14:58,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 11:14:58,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:14:58,876 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 14 states. [2020-04-18 11:14:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:59,353 INFO L93 Difference]: Finished difference Result 246 states and 690 transitions. [2020-04-18 11:14:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 690 transitions. [2020-04-18 11:14:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:14:59,355 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:14:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:59,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1585382406, now seen corresponding path program 3 times [2020-04-18 11:14:59,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:59,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388336910] [2020-04-18 11:14:59,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:59,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388336910] [2020-04-18 11:14:59,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:59,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:14:59,408 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:59,409 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:59,414 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 51 transitions. [2020-04-18 11:14:59,414 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:59,476 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:14:59,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:14:59,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:14:59,477 INFO L87 Difference]: Start difference. First operand 246 states and 690 transitions. Second operand 6 states. [2020-04-18 11:14:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:59,551 INFO L93 Difference]: Finished difference Result 342 states and 906 transitions. [2020-04-18 11:14:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 906 transitions. [2020-04-18 11:14:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:14:59,552 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:14:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:59,553 INFO L82 PathProgramCache]: Analyzing trace with hash -817315854, now seen corresponding path program 4 times [2020-04-18 11:14:59,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:59,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332043761] [2020-04-18 11:14:59,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:59,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332043761] [2020-04-18 11:14:59,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:59,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:14:59,594 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:59,595 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:59,602 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 86 transitions. [2020-04-18 11:14:59,602 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:14:59,749 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:14:59,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:14:59,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2020-04-18 11:14:59,751 INFO L87 Difference]: Start difference. First operand 342 states and 906 transitions. Second operand 7 states. [2020-04-18 11:14:59,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:14:59,833 INFO L93 Difference]: Finished difference Result 376 states and 951 transitions. [2020-04-18 11:14:59,833 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 951 transitions. [2020-04-18 11:14:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 11:14:59,835 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:14:59,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:14:59,835 INFO L82 PathProgramCache]: Analyzing trace with hash -981483084, now seen corresponding path program 5 times [2020-04-18 11:14:59,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:14:59,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174119249] [2020-04-18 11:14:59,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:14:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:14:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:14:59,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174119249] [2020-04-18 11:14:59,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:14:59,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:14:59,886 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:14:59,887 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:14:59,893 INFO L259 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-04-18 11:14:59,893 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:00,046 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 11:15:00,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:15:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 11:15:00,047 INFO L87 Difference]: Start difference. First operand 376 states and 951 transitions. Second operand 8 states. [2020-04-18 11:15:00,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:00,115 INFO L93 Difference]: Finished difference Result 376 states and 951 transitions. [2020-04-18 11:15:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 951 transitions. [2020-04-18 11:15:00,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:00,117 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [501174401] [2020-04-18 11:15:00,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:00,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:15:00,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [501174401] [2020-04-18 11:15:00,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 11:15:00,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:00,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 11:15:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 11:15:00,119 INFO L87 Difference]: Start difference. First operand 182 states and 443 transitions. Second operand 23 states. [2020-04-18 11:15:00,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:00,967 INFO L93 Difference]: Finished difference Result 165 states and 373 transitions. [2020-04-18 11:15:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 11:15:00,971 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 17 [2020-04-18 11:15:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:00,972 INFO L225 Difference]: With dead ends: 165 [2020-04-18 11:15:00,972 INFO L226 Difference]: Without dead ends: 132 [2020-04-18 11:15:00,973 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=572, Invalid=2850, Unknown=0, NotChecked=0, Total=3422 [2020-04-18 11:15:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-18 11:15:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-18 11:15:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-18 11:15:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 295 transitions. [2020-04-18 11:15:00,977 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 295 transitions. Word has length 17 [2020-04-18 11:15:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:00,978 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 295 transitions. [2020-04-18 11:15:00,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 11:15:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 295 transitions. [2020-04-18 11:15:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:15:00,979 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:00,979 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:15:00,979 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:00,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 1 times [2020-04-18 11:15:00,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:00,980 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [430297305] [2020-04-18 11:15:00,980 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:00,986 INFO L259 McrAutomatonBuilder]: Finished intersection with 354 states and 1134 transitions. [2020-04-18 11:15:00,988 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states. [2020-04-18 11:15:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:15:00,990 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:00,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:00,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1946502321, now seen corresponding path program 2 times [2020-04-18 11:15:00,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:00,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405622141] [2020-04-18 11:15:00,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:01,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405622141] [2020-04-18 11:15:01,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:01,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:01,036 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:01,038 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:01,047 INFO L259 McrAutomatonBuilder]: Finished intersection with 72 states and 147 transitions. [2020-04-18 11:15:01,047 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:01,196 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:15:01,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:15:01,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:15:01,197 INFO L87 Difference]: Start difference. First operand 354 states. Second operand 8 states. [2020-04-18 11:15:01,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:01,269 INFO L93 Difference]: Finished difference Result 474 states and 1460 transitions. [2020-04-18 11:15:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1460 transitions. [2020-04-18 11:15:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:15:01,271 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:15:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:01,271 INFO L82 PathProgramCache]: Analyzing trace with hash -436496835, now seen corresponding path program 3 times [2020-04-18 11:15:01,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:01,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176196593] [2020-04-18 11:15:01,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:01,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176196593] [2020-04-18 11:15:01,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:01,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:01,375 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:01,377 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:01,382 INFO L259 McrAutomatonBuilder]: Finished intersection with 47 states and 77 transitions. [2020-04-18 11:15:01,382 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:01,424 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:15:01,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:01,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:15:01,424 INFO L87 Difference]: Start difference. First operand 474 states and 1460 transitions. Second operand 6 states. [2020-04-18 11:15:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:01,479 INFO L93 Difference]: Finished difference Result 762 states and 2300 transitions. [2020-04-18 11:15:01,479 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 2300 transitions. [2020-04-18 11:15:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:15:01,482 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:15:01,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:01,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1475870333, now seen corresponding path program 4 times [2020-04-18 11:15:01,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:01,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133917144] [2020-04-18 11:15:01,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:01,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:01,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133917144] [2020-04-18 11:15:01,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:01,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:15:01,545 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:01,548 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:01,581 INFO L259 McrAutomatonBuilder]: Finished intersection with 49 states and 81 transitions. [2020-04-18 11:15:01,581 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:01,752 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:15:01,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:15:01,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:15:01,753 INFO L87 Difference]: Start difference. First operand 762 states and 2300 transitions. Second operand 9 states. [2020-04-18 11:15:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:01,930 INFO L93 Difference]: Finished difference Result 782 states and 2320 transitions. [2020-04-18 11:15:01,930 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2320 transitions. [2020-04-18 11:15:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-04-18 11:15:01,933 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:15:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1311703103, now seen corresponding path program 5 times [2020-04-18 11:15:01,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:01,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009432515] [2020-04-18 11:15:01,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:01,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009432515] [2020-04-18 11:15:01,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:01,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:15:01,982 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:01,983 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:01,989 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 75 transitions. [2020-04-18 11:15:01,990 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:02,097 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:15:02,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:15:02,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2020-04-18 11:15:02,098 INFO L87 Difference]: Start difference. First operand 782 states and 2320 transitions. Second operand 10 states. [2020-04-18 11:15:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:02,259 INFO L93 Difference]: Finished difference Result 782 states and 2320 transitions. [2020-04-18 11:15:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 2320 transitions. [2020-04-18 11:15:02,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:02,262 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [430297305] [2020-04-18 11:15:02,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:02,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 11:15:02,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [430297305] [2020-04-18 11:15:02,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 11:15:02,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:02,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 11:15:02,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2020-04-18 11:15:02,264 INFO L87 Difference]: Start difference. First operand 132 states and 295 transitions. Second operand 19 states. [2020-04-18 11:15:02,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:02,881 INFO L93 Difference]: Finished difference Result 121 states and 271 transitions. [2020-04-18 11:15:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-04-18 11:15:02,881 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2020-04-18 11:15:02,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:02,883 INFO L225 Difference]: With dead ends: 121 [2020-04-18 11:15:02,883 INFO L226 Difference]: Without dead ends: 112 [2020-04-18 11:15:02,885 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=553, Invalid=2203, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 11:15:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-04-18 11:15:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-04-18 11:15:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-04-18 11:15:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 255 transitions. [2020-04-18 11:15:02,889 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 255 transitions. Word has length 19 [2020-04-18 11:15:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:02,889 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 255 transitions. [2020-04-18 11:15:02,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 11:15:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 255 transitions. [2020-04-18 11:15:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:15:02,890 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:15:02,890 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] [2020-04-18 11:15:02,890 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:15:02,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:02,890 INFO L82 PathProgramCache]: Analyzing trace with hash 188961609, now seen corresponding path program 1 times [2020-04-18 11:15:02,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:15:02,891 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1135092022] [2020-04-18 11:15:02,892 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:02,903 INFO L259 McrAutomatonBuilder]: Finished intersection with 706 states and 2442 transitions. [2020-04-18 11:15:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-04-18 11:15:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:15:02,911 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:15:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:02,912 INFO L82 PathProgramCache]: Analyzing trace with hash -736929817, now seen corresponding path program 2 times [2020-04-18 11:15:02,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:02,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875348891] [2020-04-18 11:15:02,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:02,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875348891] [2020-04-18 11:15:02,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:02,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:02,951 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:02,953 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:02,991 INFO L259 McrAutomatonBuilder]: Finished intersection with 89 states and 189 transitions. [2020-04-18 11:15:02,991 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:03,015 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:03,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:15:03,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:15:03,016 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 6 states. [2020-04-18 11:15:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:03,065 INFO L93 Difference]: Finished difference Result 1114 states and 3800 transitions. [2020-04-18 11:15:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 3800 transitions. [2020-04-18 11:15:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:15:03,068 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:15:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:03,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1583089753, now seen corresponding path program 3 times [2020-04-18 11:15:03,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:03,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473967876] [2020-04-18 11:15:03,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:03,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473967876] [2020-04-18 11:15:03,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:03,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:03,121 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:03,123 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:03,137 INFO L259 McrAutomatonBuilder]: Finished intersection with 111 states and 248 transitions. [2020-04-18 11:15:03,138 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:03,237 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:15:03,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 11:15:03,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-04-18 11:15:03,238 INFO L87 Difference]: Start difference. First operand 1114 states and 3800 transitions. Second operand 8 states. [2020-04-18 11:15:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:03,326 INFO L93 Difference]: Finished difference Result 1726 states and 5822 transitions. [2020-04-18 11:15:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 5822 transitions. [2020-04-18 11:15:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:15:03,330 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:15:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash 971181767, now seen corresponding path program 4 times [2020-04-18 11:15:03,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:03,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708423678] [2020-04-18 11:15:03,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:03,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708423678] [2020-04-18 11:15:03,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:03,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:15:03,371 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:03,373 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:03,381 INFO L259 McrAutomatonBuilder]: Finished intersection with 51 states and 83 transitions. [2020-04-18 11:15:03,381 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:03,554 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 11:15:03,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:15:03,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-04-18 11:15:03,555 INFO L87 Difference]: Start difference. First operand 1726 states and 5822 transitions. Second operand 9 states. [2020-04-18 11:15:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:03,860 INFO L93 Difference]: Finished difference Result 1846 states and 6010 transitions. [2020-04-18 11:15:03,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 6010 transitions. [2020-04-18 11:15:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:15:03,865 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:15:03,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:03,866 INFO L82 PathProgramCache]: Analyzing trace with hash 188682519, now seen corresponding path program 5 times [2020-04-18 11:15:03,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:03,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313815191] [2020-04-18 11:15:03,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:03,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313815191] [2020-04-18 11:15:03,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:03,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:15:03,903 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:03,905 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:03,913 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2020-04-18 11:15:03,914 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:04,043 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 11:15:04,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 11:15:04,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2020-04-18 11:15:04,044 INFO L87 Difference]: Start difference. First operand 1846 states and 6010 transitions. Second operand 7 states. [2020-04-18 11:15:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:04,130 INFO L93 Difference]: Finished difference Result 3032 states and 9408 transitions. [2020-04-18 11:15:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 9408 transitions. [2020-04-18 11:15:04,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:15:04,136 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 11:15:04,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:04,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2121239349, now seen corresponding path program 6 times [2020-04-18 11:15:04,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:04,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092847924] [2020-04-18 11:15:04,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:04,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092847924] [2020-04-18 11:15:04,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:04,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 11:15:04,221 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:04,223 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:04,231 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2020-04-18 11:15:04,231 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:04,356 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:15:04,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 11:15:04,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 11:15:04,357 INFO L87 Difference]: Start difference. First operand 3032 states and 9408 transitions. Second operand 10 states. [2020-04-18 11:15:04,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:04,728 INFO L93 Difference]: Finished difference Result 3056 states and 9424 transitions. [2020-04-18 11:15:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 9424 transitions. [2020-04-18 11:15:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-04-18 11:15:04,734 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 11:15:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:15:04,734 INFO L82 PathProgramCache]: Analyzing trace with hash -62971415, now seen corresponding path program 7 times [2020-04-18 11:15:04,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:15:04,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446498502] [2020-04-18 11:15:04,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:15:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:15:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:15:04,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446498502] [2020-04-18 11:15:04,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:15:04,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:15:04,777 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:15:04,779 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:15:04,783 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 31 transitions. [2020-04-18 11:15:04,784 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:15:04,833 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:15:04,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:15:04,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 11:15:04,834 INFO L87 Difference]: Start difference. First operand 3056 states and 9424 transitions. Second operand 5 states. [2020-04-18 11:15:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:04,915 INFO L93 Difference]: Finished difference Result 4916 states and 14446 transitions. [2020-04-18 11:15:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 14446 transitions. [2020-04-18 11:15:04,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:04,923 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1135092022] [2020-04-18 11:15:04,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:15:04,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:15:04,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1135092022] [2020-04-18 11:15:04,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 11:15:04,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:15:04,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 11:15:04,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 11:15:04,924 INFO L87 Difference]: Start difference. First operand 112 states and 255 transitions. Second operand 25 states. [2020-04-18 11:15:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:15:06,609 INFO L93 Difference]: Finished difference Result 179 states and 402 transitions. [2020-04-18 11:15:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-04-18 11:15:06,610 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 21 [2020-04-18 11:15:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:15:06,610 INFO L225 Difference]: With dead ends: 179 [2020-04-18 11:15:06,610 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:15:06,613 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2459 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1150, Invalid=7040, Unknown=0, NotChecked=0, Total=8190 [2020-04-18 11:15:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:15:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:15:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:15:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:15:06,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-04-18 11:15:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:15:06,614 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:15:06,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 11:15:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:15:06,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:15:06,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:15:06 BasicIcfg [2020-04-18 11:15:06,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:15:06,621 INFO L168 Benchmark]: Toolchain (without parser) took 17274.60 ms. Allocated memory was 138.9 MB in the beginning and 439.4 MB in the end (delta: 300.4 MB). Free memory was 100.6 MB in the beginning and 336.5 MB in the end (delta: -235.9 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:06,621 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 11:15:06,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.52 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 158.4 MB in the end (delta: -59.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:06,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.38 ms. Allocated memory is still 202.4 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:06,623 INFO L168 Benchmark]: Boogie Preprocessor took 27.06 ms. Allocated memory is still 202.4 MB. Free memory was 156.4 MB in the beginning and 154.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:06,623 INFO L168 Benchmark]: RCFGBuilder took 460.93 ms. Allocated memory is still 202.4 MB. Free memory was 154.5 MB in the beginning and 130.4 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:06,624 INFO L168 Benchmark]: TraceAbstraction took 15979.33 ms. Allocated memory was 202.4 MB in the beginning and 439.4 MB in the end (delta: 237.0 MB). Free memory was 130.4 MB in the beginning and 336.5 MB in the end (delta: -206.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:15:06,627 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.52 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 158.4 MB in the end (delta: -59.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.38 ms. Allocated memory is still 202.4 MB. Free memory was 158.4 MB in the beginning and 156.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.06 ms. Allocated memory is still 202.4 MB. Free memory was 156.4 MB in the beginning and 154.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.93 ms. Allocated memory is still 202.4 MB. Free memory was 154.5 MB in the beginning and 130.4 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15979.33 ms. Allocated memory was 202.4 MB in the beginning and 439.4 MB in the end (delta: 237.0 MB). Free memory was 130.4 MB in the beginning and 336.5 MB in the end (delta: -206.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 93 ProgramPointsBefore, 39 ProgramPointsAfterwards, 82 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 945 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2807 CheckedPairsTotal, 63 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 222 SDtfs, 1093 SDslu, 1156 SDs, 0 SdLazy, 1795 SolverSat, 498 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 740 GetRequests, 406 SyntacticMatches, 14 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5444 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...