/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:20:58,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:20:58,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:20:58,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:20:58,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:20:58,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:20:58,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:20:58,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:20:58,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:20:58,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:20:58,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:20:58,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:20:58,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:20:58,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:20:58,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:20:58,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:20:58,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:20:58,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:20:58,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:20:58,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:20:58,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:20:58,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:20:58,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:20:58,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:20:58,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:20:58,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:20:58,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:20:58,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:20:58,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:20:58,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:20:58,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:20:58,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:20:58,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:20:58,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:20:58,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:20:58,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:20:58,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:20:58,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:20:58,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:20:58,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:20:58,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:20:58,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:20:58,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:20:58,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:20:58,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:20:58,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:20:58,222 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:20:58,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:20:58,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:20:58,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:20:58,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:20:58,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:20:58,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:20:58,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:20:58,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:20:58,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:20:58,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:20:58,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:20:58,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:20:58,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:20:58,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:20:58,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:20:58,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:20:58,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:20:58,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:20:58,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:20:58,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:20:58,227 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:20:58,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:20:58,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:20:58,227 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:20:58,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:20:58,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:20:58,505 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:20:58,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:20:58,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:20:58,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:20:58,524 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:20:58,524 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-04-18 15:20:58,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1caa8ce/d884e007f1b04cbfbe3893279eacb059/FLAGbd57c6df1 [2020-04-18 15:20:59,194 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:20:59,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2020-04-18 15:20:59,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1caa8ce/d884e007f1b04cbfbe3893279eacb059/FLAGbd57c6df1 [2020-04-18 15:20:59,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1caa8ce/d884e007f1b04cbfbe3893279eacb059 [2020-04-18 15:20:59,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:20:59,470 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:20:59,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:20:59,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:20:59,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:20:59,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:20:59" (1/1) ... [2020-04-18 15:20:59,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31af0873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:20:59, skipping insertion in model container [2020-04-18 15:20:59,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:20:59" (1/1) ... [2020-04-18 15:20:59,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:20:59,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:20:59,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:21:00,006 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:21:00,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:21:00,122 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:21:00,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00 WrapperNode [2020-04-18 15:21:00,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:21:00,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:21:00,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:21:00,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:21:00,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:21:00,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:21:00,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:21:00,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:21:00,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (1/1) ... [2020-04-18 15:21:00,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:21:00,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:21:00,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:21:00,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:21:00,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (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 15:21:00,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:21:00,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:21:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:21:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:21:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:21:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:21:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:21:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:21:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:21:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:21:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:21:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:21:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:21:00,268 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 15:21:00,672 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:21:00,672 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:21:00,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:21:00 BoogieIcfgContainer [2020-04-18 15:21:00,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:21:00,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:21:00,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:21:00,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:21:00,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:20:59" (1/3) ... [2020-04-18 15:21:00,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30db0172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:21:00, skipping insertion in model container [2020-04-18 15:21:00,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:21:00" (2/3) ... [2020-04-18 15:21:00,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30db0172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:21:00, skipping insertion in model container [2020-04-18 15:21:00,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:21:00" (3/3) ... [2020-04-18 15:21:00,693 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2020-04-18 15:21:00,702 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:21:00,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:21:00,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:21:00,710 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:21:00,747 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,747 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,748 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,750 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,750 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,751 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,751 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,751 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,752 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,752 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,752 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,752 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,753 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,753 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,754 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,754 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,754 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,754 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,758 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,759 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,759 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,759 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,766 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,766 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,766 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,766 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,775 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,775 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,776 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,776 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:21:00,797 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:21:00,817 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:21:00,818 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:21:00,818 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:21:00,818 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:21:00,818 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:21:00,818 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:21:00,819 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:21:00,819 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:21:00,836 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 15:21:00,838 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:21:00,884 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:21:00,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:21:00,889 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:21:00,892 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 15:21:00,914 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 15:21:00,915 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:21:00,916 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 15:21:00,919 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 15:21:00,921 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:21:02,221 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 15:21:02,351 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2244 [2020-04-18 15:21:02,351 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 15:21:02,355 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 15:21:02,395 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-04-18 15:21:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-04-18 15:21:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:21:02,413 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:21:02,414 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:21:02,414 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:21:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:02,421 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 1 times [2020-04-18 15:21:02,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:21:02,429 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [889719247] [2020-04-18 15:21:02,445 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:02,455 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:21:02,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:21:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:21:02,457 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:21:02,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:02,458 INFO L82 PathProgramCache]: Analyzing trace with hash 278619754, now seen corresponding path program 2 times [2020-04-18 15:21:02,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:02,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559038800] [2020-04-18 15:21:02,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:02,614 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 15:21:02,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559038800] [2020-04-18 15:21:02,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:02,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:21:02,618 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:02,619 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:02,621 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:21:02,621 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:02,625 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:21:02,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:21:02,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:21:02,631 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-04-18 15:21:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:02,635 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:21:02,636 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:21:02,636 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:02,637 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [889719247] [2020-04-18 15:21:02,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:21:02,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:21:02,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [889719247] [2020-04-18 15:21:02,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 15:21:02,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:21:02,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 15:21:02,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 15:21:02,655 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-04-18 15:21:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:02,676 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-04-18 15:21:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 15:21:02,677 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 15:21:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:21:02,693 INFO L225 Difference]: With dead ends: 274 [2020-04-18 15:21:02,693 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 15:21:02,694 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 15:21:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 15:21:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 15:21:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 15:21:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-04-18 15:21:02,762 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-04-18 15:21:02,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:21:02,763 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-04-18 15:21:02,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 15:21:02,764 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-04-18 15:21:02,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:21:02,765 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:21:02,765 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:21:02,766 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:21:02,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:02,766 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 1 times [2020-04-18 15:21:02,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:21:02,767 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [946151237] [2020-04-18 15:21:02,767 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:02,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:21:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-04-18 15:21:02,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:21:02,769 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:21:02,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:02,769 INFO L82 PathProgramCache]: Analyzing trace with hash 47263938, now seen corresponding path program 2 times [2020-04-18 15:21:02,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:02,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373557590] [2020-04-18 15:21:02,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:02,914 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 15:21:02,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373557590] [2020-04-18 15:21:02,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:02,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:21:02,916 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:02,917 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:02,923 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:21:02,923 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:02,938 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:21:02,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:02,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:21:02,939 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-04-18 15:21:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:02,955 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-04-18 15:21:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-04-18 15:21:02,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:02,956 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [946151237] [2020-04-18 15:21:02,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:21:02,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:21:02,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [946151237] [2020-04-18 15:21:02,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:21:02,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:21:02,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:02,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:21:02,960 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-04-18 15:21:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,003 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-04-18 15:21:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:21:03,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:21:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:21:03,008 INFO L225 Difference]: With dead ends: 250 [2020-04-18 15:21:03,009 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 15:21:03,010 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 15:21:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 15:21:03,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 15:21:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 15:21:03,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-04-18 15:21:03,044 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-04-18 15:21:03,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:21:03,044 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-04-18 15:21:03,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:21:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-04-18 15:21:03,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:21:03,047 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:21:03,047 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:21:03,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:21:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1465143248, now seen corresponding path program 1 times [2020-04-18 15:21:03,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:21:03,049 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1497200835] [2020-04-18 15:21:03,050 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,051 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:21:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-04-18 15:21:03,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:21:03,052 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:21:03,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1465182248, now seen corresponding path program 2 times [2020-04-18 15:21:03,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:03,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2272304] [2020-04-18 15:21:03,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:03,162 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 15:21:03,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2272304] [2020-04-18 15:21:03,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:03,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:03,163 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:03,164 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,166 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 15:21:03,166 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:03,178 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:21:03,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:03,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:21:03,179 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-04-18 15:21:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,190 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-04-18 15:21:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-04-18 15:21:03,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:03,191 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1497200835] [2020-04-18 15:21:03,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:21:03,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:21:03,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1497200835] [2020-04-18 15:21:03,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:21:03,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:21:03,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:03,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:21:03,193 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 4 states. [2020-04-18 15:21:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,212 INFO L93 Difference]: Finished difference Result 232 states and 608 transitions. [2020-04-18 15:21:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:21:03,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:21:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:21:03,215 INFO L225 Difference]: With dead ends: 232 [2020-04-18 15:21:03,215 INFO L226 Difference]: Without dead ends: 196 [2020-04-18 15:21:03,216 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 15:21:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-04-18 15:21:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2020-04-18 15:21:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-04-18 15:21:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 530 transitions. [2020-04-18 15:21:03,231 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 530 transitions. Word has length 10 [2020-04-18 15:21:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:21:03,232 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 530 transitions. [2020-04-18 15:21:03,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:21:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 530 transitions. [2020-04-18 15:21:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:21:03,233 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:21:03,233 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:21:03,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:21:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,234 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 1 times [2020-04-18 15:21:03,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:21:03,235 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1504107582] [2020-04-18 15:21:03,235 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,236 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 42 transitions. [2020-04-18 15:21:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-04-18 15:21:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:21:03,237 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:21:03,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,237 INFO L82 PathProgramCache]: Analyzing trace with hash 462893661, now seen corresponding path program 2 times [2020-04-18 15:21:03,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:03,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495558090] [2020-04-18 15:21:03,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:03,306 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 15:21:03,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495558090] [2020-04-18 15:21:03,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:03,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:03,308 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:03,308 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,310 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 15:21:03,311 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:03,323 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:21:03,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:03,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:21:03,324 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-04-18 15:21:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,344 INFO L93 Difference]: Finished difference Result 30 states and 46 transitions. [2020-04-18 15:21:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 46 transitions. [2020-04-18 15:21:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:21:03,345 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:21:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,345 INFO L82 PathProgramCache]: Analyzing trace with hash 462854661, now seen corresponding path program 3 times [2020-04-18 15:21:03,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:03,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930616947] [2020-04-18 15:21:03,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:03,407 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 15:21:03,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930616947] [2020-04-18 15:21:03,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:03,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:03,409 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:03,410 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,411 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 28 transitions. [2020-04-18 15:21:03,411 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:03,424 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:21:03,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:21:03,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:21:03,425 INFO L87 Difference]: Start difference. First operand 30 states and 46 transitions. Second operand 5 states. [2020-04-18 15:21:03,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,454 INFO L93 Difference]: Finished difference Result 30 states and 46 transitions. [2020-04-18 15:21:03,454 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 46 transitions. [2020-04-18 15:21:03,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:03,455 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1504107582] [2020-04-18 15:21:03,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:21:03,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:21:03,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1504107582] [2020-04-18 15:21:03,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:21:03,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:21:03,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:21:03,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:21:03,457 INFO L87 Difference]: Start difference. First operand 196 states and 530 transitions. Second operand 5 states. [2020-04-18 15:21:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,486 INFO L93 Difference]: Finished difference Result 255 states and 672 transitions. [2020-04-18 15:21:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:21:03,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 15:21:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:21:03,491 INFO L225 Difference]: With dead ends: 255 [2020-04-18 15:21:03,491 INFO L226 Difference]: Without dead ends: 150 [2020-04-18 15:21:03,492 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:21:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-04-18 15:21:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-04-18 15:21:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-04-18 15:21:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 378 transitions. [2020-04-18 15:21:03,500 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 378 transitions. Word has length 11 [2020-04-18 15:21:03,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:21:03,501 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 378 transitions. [2020-04-18 15:21:03,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:21:03,501 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 378 transitions. [2020-04-18 15:21:03,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:21:03,502 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:21:03,502 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:21:03,502 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:21:03,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,503 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 1 times [2020-04-18 15:21:03,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:21:03,503 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2028693953] [2020-04-18 15:21:03,504 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,505 INFO L259 McrAutomatonBuilder]: Finished intersection with 46 states and 96 transitions. [2020-04-18 15:21:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-04-18 15:21:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:21:03,506 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:21:03,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,506 INFO L82 PathProgramCache]: Analyzing trace with hash 266065162, now seen corresponding path program 2 times [2020-04-18 15:21:03,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:03,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583111957] [2020-04-18 15:21:03,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:03,557 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 15:21:03,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583111957] [2020-04-18 15:21:03,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:03,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:03,558 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:03,559 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,563 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 45 transitions. [2020-04-18 15:21:03,563 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:03,583 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:21:03,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:03,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:21:03,584 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-04-18 15:21:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,600 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-04-18 15:21:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-04-18 15:21:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:21:03,601 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:21:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,602 INFO L82 PathProgramCache]: Analyzing trace with hash 266026162, now seen corresponding path program 3 times [2020-04-18 15:21:03,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:03,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463346668] [2020-04-18 15:21:03,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:03,651 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 15:21:03,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463346668] [2020-04-18 15:21:03,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:03,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:03,652 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:03,653 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,656 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 46 transitions. [2020-04-18 15:21:03,657 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:03,677 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:21:03,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:03,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:21:03,678 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 4 states. [2020-04-18 15:21:03,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,692 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-04-18 15:21:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-04-18 15:21:03,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:03,693 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2028693953] [2020-04-18 15:21:03,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:21:03,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:21:03,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2028693953] [2020-04-18 15:21:03,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:21:03,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:21:03,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:21:03,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:21:03,695 INFO L87 Difference]: Start difference. First operand 150 states and 378 transitions. Second operand 6 states. [2020-04-18 15:21:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,791 INFO L93 Difference]: Finished difference Result 164 states and 376 transitions. [2020-04-18 15:21:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 15:21:03,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-04-18 15:21:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:21:03,792 INFO L225 Difference]: With dead ends: 164 [2020-04-18 15:21:03,792 INFO L226 Difference]: Without dead ends: 128 [2020-04-18 15:21:03,793 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:21:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-18 15:21:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-18 15:21:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-18 15:21:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 293 transitions. [2020-04-18 15:21:03,799 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 293 transitions. Word has length 12 [2020-04-18 15:21:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:21:03,800 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 293 transitions. [2020-04-18 15:21:03,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:21:03,800 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 293 transitions. [2020-04-18 15:21:03,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:21:03,801 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:21:03,801 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:21:03,801 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:21:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 1 times [2020-04-18 15:21:03,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:21:03,802 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [922996693] [2020-04-18 15:21:03,802 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,804 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 150 transitions. [2020-04-18 15:21:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-04-18 15:21:03,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:21:03,806 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:21:03,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1292416845, now seen corresponding path program 2 times [2020-04-18 15:21:03,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:03,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256560231] [2020-04-18 15:21:03,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:03,874 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 15:21:03,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256560231] [2020-04-18 15:21:03,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:03,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:03,875 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:03,876 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,880 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 49 transitions. [2020-04-18 15:21:03,881 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:03,891 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:21:03,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:03,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:21:03,892 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2020-04-18 15:21:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:03,910 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 15:21:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 15:21:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:21:03,911 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:21:03,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:03,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1292455845, now seen corresponding path program 3 times [2020-04-18 15:21:03,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:03,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587913982] [2020-04-18 15:21:03,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:03,979 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 15:21:03,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587913982] [2020-04-18 15:21:03,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:03,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:21:03,980 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:03,981 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:03,987 INFO L259 McrAutomatonBuilder]: Finished intersection with 34 states and 59 transitions. [2020-04-18 15:21:03,987 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:04,016 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:21:04,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:21:04,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:21:04,019 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 5 states. [2020-04-18 15:21:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,048 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 15:21:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 15:21:04,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:04,049 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [922996693] [2020-04-18 15:21:04,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:21:04,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:21:04,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [922996693] [2020-04-18 15:21:04,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:21:04,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:21:04,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:21:04,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:21:04,051 INFO L87 Difference]: Start difference. First operand 128 states and 293 transitions. Second operand 7 states. [2020-04-18 15:21:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,139 INFO L93 Difference]: Finished difference Result 116 states and 240 transitions. [2020-04-18 15:21:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:21:04,140 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 15:21:04,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:21:04,141 INFO L225 Difference]: With dead ends: 116 [2020-04-18 15:21:04,141 INFO L226 Difference]: Without dead ends: 92 [2020-04-18 15:21:04,141 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:21:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-04-18 15:21:04,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-04-18 15:21:04,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-04-18 15:21:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 186 transitions. [2020-04-18 15:21:04,145 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 186 transitions. Word has length 13 [2020-04-18 15:21:04,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:21:04,145 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 186 transitions. [2020-04-18 15:21:04,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:21:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 186 transitions. [2020-04-18 15:21:04,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:21:04,146 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:21:04,146 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:21:04,146 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:21:04,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,147 INFO L82 PathProgramCache]: Analyzing trace with hash -228576461, now seen corresponding path program 1 times [2020-04-18 15:21:04,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:21:04,147 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [148170487] [2020-04-18 15:21:04,148 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,149 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 118 transitions. [2020-04-18 15:21:04,150 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 15:21:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:21:04,150 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:21:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,151 INFO L82 PathProgramCache]: Analyzing trace with hash 710821399, now seen corresponding path program 2 times [2020-04-18 15:21:04,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:04,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224422969] [2020-04-18 15:21:04,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:04,225 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 15:21:04,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224422969] [2020-04-18 15:21:04,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:04,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:04,227 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:04,228 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,230 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-04-18 15:21:04,230 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:04,240 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:21:04,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:04,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:21:04,241 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-04-18 15:21:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,257 INFO L93 Difference]: Finished difference Result 76 states and 151 transitions. [2020-04-18 15:21:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 151 transitions. [2020-04-18 15:21:04,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:21:04,257 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:21:04,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,258 INFO L82 PathProgramCache]: Analyzing trace with hash 673342399, now seen corresponding path program 3 times [2020-04-18 15:21:04,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:04,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976824744] [2020-04-18 15:21:04,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:04,303 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 15:21:04,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976824744] [2020-04-18 15:21:04,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:04,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:04,305 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:04,306 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,313 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 15:21:04,314 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:04,320 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:21:04,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:04,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:21:04,321 INFO L87 Difference]: Start difference. First operand 76 states and 151 transitions. Second operand 4 states. [2020-04-18 15:21:04,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,336 INFO L93 Difference]: Finished difference Result 88 states and 171 transitions. [2020-04-18 15:21:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 171 transitions. [2020-04-18 15:21:04,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:21:04,337 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:21:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,338 INFO L82 PathProgramCache]: Analyzing trace with hash 671669119, now seen corresponding path program 4 times [2020-04-18 15:21:04,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:04,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842202215] [2020-04-18 15:21:04,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:04,383 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 15:21:04,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842202215] [2020-04-18 15:21:04,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:04,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:04,384 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:04,385 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,388 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:21:04,388 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:04,401 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:21:04,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:04,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:21:04,402 INFO L87 Difference]: Start difference. First operand 88 states and 171 transitions. Second operand 4 states. [2020-04-18 15:21:04,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,420 INFO L93 Difference]: Finished difference Result 88 states and 171 transitions. [2020-04-18 15:21:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 171 transitions. [2020-04-18 15:21:04,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:04,421 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [148170487] [2020-04-18 15:21:04,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:21:04,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:21:04,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [148170487] [2020-04-18 15:21:04,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 15:21:04,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:21:04,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:21:04,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:21:04,423 INFO L87 Difference]: Start difference. First operand 92 states and 186 transitions. Second operand 6 states. [2020-04-18 15:21:04,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,447 INFO L93 Difference]: Finished difference Result 120 states and 228 transitions. [2020-04-18 15:21:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 15:21:04,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 15:21:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:21:04,449 INFO L225 Difference]: With dead ends: 120 [2020-04-18 15:21:04,449 INFO L226 Difference]: Without dead ends: 94 [2020-04-18 15:21:04,449 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:21:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-04-18 15:21:04,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-04-18 15:21:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-04-18 15:21:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 175 transitions. [2020-04-18 15:21:04,453 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 175 transitions. Word has length 14 [2020-04-18 15:21:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:21:04,453 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 175 transitions. [2020-04-18 15:21:04,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 15:21:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 175 transitions. [2020-04-18 15:21:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:21:04,454 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:21:04,454 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:21:04,454 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:21:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1357686433, now seen corresponding path program 1 times [2020-04-18 15:21:04,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:21:04,455 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [339083899] [2020-04-18 15:21:04,456 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,459 INFO L259 McrAutomatonBuilder]: Finished intersection with 130 states and 330 transitions. [2020-04-18 15:21:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2020-04-18 15:21:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:21:04,461 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:21:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1328851933, now seen corresponding path program 2 times [2020-04-18 15:21:04,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:04,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012736736] [2020-04-18 15:21:04,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:04,519 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 15:21:04,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012736736] [2020-04-18 15:21:04,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:04,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:21:04,521 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:04,522 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,529 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2020-04-18 15:21:04,529 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:04,550 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:21:04,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:21:04,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:21:04,551 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 5 states. [2020-04-18 15:21:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,601 INFO L93 Difference]: Finished difference Result 186 states and 450 transitions. [2020-04-18 15:21:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 450 transitions. [2020-04-18 15:21:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:21:04,602 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:21:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -768644663, now seen corresponding path program 3 times [2020-04-18 15:21:04,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:04,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87271921] [2020-04-18 15:21:04,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:04,677 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 15:21:04,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87271921] [2020-04-18 15:21:04,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:04,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:21:04,678 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:04,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,685 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 15:21:04,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:04,696 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:21:04,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:21:04,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:21:04,697 INFO L87 Difference]: Start difference. First operand 186 states and 450 transitions. Second operand 4 states. [2020-04-18 15:21:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,717 INFO L93 Difference]: Finished difference Result 226 states and 520 transitions. [2020-04-18 15:21:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 520 transitions. [2020-04-18 15:21:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:21:04,718 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:21:04,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,719 INFO L82 PathProgramCache]: Analyzing trace with hash -804564983, now seen corresponding path program 4 times [2020-04-18 15:21:04,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:04,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122961449] [2020-04-18 15:21:04,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:04,773 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 15:21:04,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122961449] [2020-04-18 15:21:04,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:04,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:21:04,774 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:04,776 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,782 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 65 transitions. [2020-04-18 15:21:04,782 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:04,821 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:21:04,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:21:04,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:21:04,822 INFO L87 Difference]: Start difference. First operand 226 states and 520 transitions. Second operand 5 states. [2020-04-18 15:21:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:04,875 INFO L93 Difference]: Finished difference Result 242 states and 536 transitions. [2020-04-18 15:21:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 536 transitions. [2020-04-18 15:21:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:21:04,877 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:21:04,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:21:04,877 INFO L82 PathProgramCache]: Analyzing trace with hash -799092577, now seen corresponding path program 5 times [2020-04-18 15:21:04,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:21:04,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225903896] [2020-04-18 15:21:04,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:21:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:21:04,962 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 15:21:04,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225903896] [2020-04-18 15:21:04,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:21:04,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:21:04,965 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:21:04,967 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:21:04,970 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 49 transitions. [2020-04-18 15:21:04,970 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:21:05,046 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:21:05,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:21:05,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:21:05,047 INFO L87 Difference]: Start difference. First operand 242 states and 536 transitions. Second operand 7 states. [2020-04-18 15:21:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:05,106 INFO L93 Difference]: Finished difference Result 242 states and 536 transitions. [2020-04-18 15:21:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 536 transitions. [2020-04-18 15:21:05,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:05,107 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [339083899] [2020-04-18 15:21:05,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:21:05,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 15:21:05,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [339083899] [2020-04-18 15:21:05,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 15:21:05,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:21:05,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 15:21:05,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-04-18 15:21:05,113 INFO L87 Difference]: Start difference. First operand 90 states and 175 transitions. Second operand 11 states. [2020-04-18 15:21:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:21:05,539 INFO L93 Difference]: Finished difference Result 98 states and 185 transitions. [2020-04-18 15:21:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 15:21:05,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-04-18 15:21:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:21:05,540 INFO L225 Difference]: With dead ends: 98 [2020-04-18 15:21:05,540 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:21:05,541 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 15:21:05,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:21:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:21:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:21:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:21:05,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-04-18 15:21:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:21:05,542 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:21:05,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 15:21:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:21:05,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:21:05,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:21:05 BasicIcfg [2020-04-18 15:21:05,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:21:05,551 INFO L168 Benchmark]: Toolchain (without parser) took 6100.31 ms. Allocated memory was 145.2 MB in the beginning and 285.2 MB in the end (delta: 140.0 MB). Free memory was 101.3 MB in the beginning and 136.5 MB in the end (delta: -35.1 MB). Peak memory consumption was 104.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:21:05,555 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:21:05,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.54 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.6 MB in the beginning and 158.3 MB in the end (delta: -58.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:21:05,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.91 ms. Allocated memory is still 201.9 MB. Free memory was 158.3 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:21:05,559 INFO L168 Benchmark]: Boogie Preprocessor took 26.72 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:21:05,560 INFO L168 Benchmark]: RCFGBuilder took 475.84 ms. Allocated memory is still 201.9 MB. Free memory was 154.3 MB in the beginning and 132.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:21:05,560 INFO L168 Benchmark]: TraceAbstraction took 4867.62 ms. Allocated memory was 201.9 MB in the beginning and 285.2 MB in the end (delta: 83.4 MB). Free memory was 132.7 MB in the beginning and 136.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:21:05,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.54 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 99.6 MB in the beginning and 158.3 MB in the end (delta: -58.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.91 ms. Allocated memory is still 201.9 MB. Free memory was 158.3 MB in the beginning and 156.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.72 ms. Allocated memory is still 201.9 MB. Free memory was 156.2 MB in the beginning and 154.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 475.84 ms. Allocated memory is still 201.9 MB. Free memory was 154.3 MB in the beginning and 132.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4867.62 ms. Allocated memory was 201.9 MB in the beginning and 285.2 MB in the end (delta: 83.4 MB). Free memory was 132.7 MB in the beginning and 136.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 76 ProgramPointsBefore, 31 ProgramPointsAfterwards, 68 TransitionsBefore, 22 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 588 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2244 CheckedPairsTotal, 56 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 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 164 SDtfs, 169 SDslu, 352 SDs, 0 SdLazy, 235 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 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...