/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:17:51,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:17:51,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:17:51,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:17:51,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:17:51,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:17:51,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:17:51,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:17:51,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:17:51,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:17:51,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:17:51,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:17:51,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:17:51,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:17:51,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:17:51,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:17:51,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:17:51,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:17:51,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:17:51,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:17:51,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:17:51,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:17:51,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:17:51,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:17:51,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:17:51,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:17:51,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:17:51,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:17:51,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:17:51,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:17:51,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:17:51,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:17:51,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:17:51,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:17:51,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:17:51,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:17:51,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:17:51,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:17:51,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:17:51,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:17:51,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:17:51,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:17:51,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:17:51,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:17:51,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:17:51,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:17:51,202 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:17:51,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:17:51,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:17:51,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:17:51,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:17:51,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:17:51,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:17:51,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:17:51,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:17:51,204 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:17:51,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:17:51,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:17:51,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:17:51,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:17:51,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:17:51,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:17:51,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:17:51,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:17:51,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:17:51,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:17:51,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:17:51,206 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:17:51,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:17:51,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:17:51,207 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:17:51,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:17:51,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:17:51,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:17:51,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:17:51,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:17:51,486 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:17:51,486 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:17:51,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-18 19:17:51,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445045091/98834159cb404274a3ea0d2974c2b3bc/FLAG459169040 [2020-04-18 19:17:52,100 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:17:52,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-04-18 19:17:52,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445045091/98834159cb404274a3ea0d2974c2b3bc/FLAG459169040 [2020-04-18 19:17:52,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445045091/98834159cb404274a3ea0d2974c2b3bc [2020-04-18 19:17:52,394 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:17:52,411 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:17:52,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:17:52,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:17:52,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:17:52,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:17:52" (1/1) ... [2020-04-18 19:17:52,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574de9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:52, skipping insertion in model container [2020-04-18 19:17:52,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:17:52" (1/1) ... [2020-04-18 19:17:52,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:17:52,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:17:52,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:17:52,999 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:17:53,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:17:53,122 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:17:53,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53 WrapperNode [2020-04-18 19:17:53,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:17:53,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:17:53,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:17:53,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:17:53,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:17:53,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:17:53,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:17:53,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:17:53,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... [2020-04-18 19:17:53,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:17:53,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:17:53,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:17:53,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:17:53,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:17:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:17:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:17:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:17:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:17:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:17:53,260 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:17:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:17:53,260 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:17:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:17:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:17:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:17:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:17:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:17:53,263 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:17:53,661 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:17:53,661 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:17:53,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:17:53 BoogieIcfgContainer [2020-04-18 19:17:53,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:17:53,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:17:53,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:17:53,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:17:53,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:17:52" (1/3) ... [2020-04-18 19:17:53,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205a5a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:17:53, skipping insertion in model container [2020-04-18 19:17:53,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:17:53" (2/3) ... [2020-04-18 19:17:53,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205a5a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:17:53, skipping insertion in model container [2020-04-18 19:17:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:17:53" (3/3) ... [2020-04-18 19:17:53,675 INFO L109 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-04-18 19:17:53,685 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:17:53,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:17:53,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:17:53,693 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:17:53,721 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,721 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,722 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,722 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,723 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,723 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,724 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,724 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,724 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,724 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,725 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,725 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,725 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,726 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,726 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,726 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,727 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,727 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,731 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,731 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,732 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,732 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,738 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,739 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,739 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,740 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,742 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,743 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,743 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,743 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:17:53,759 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:17:53,779 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:17:53,779 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:17:53,780 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:17:53,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:17:53,780 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:17:53,780 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:17:53,780 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:17:53,780 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:17:53,793 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 19:17:54,334 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8471 states. [2020-04-18 19:17:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states. [2020-04-18 19:17:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:17:54,375 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:17:54,376 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:17:54,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:17:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1862511890, now seen corresponding path program 1 times [2020-04-18 19:17:54,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:17:54,393 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [427557890] [2020-04-18 19:17:54,409 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:54,427 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:17:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 19:17:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:17:54,431 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:17:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:54,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1862511890, now seen corresponding path program 2 times [2020-04-18 19:17:54,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:17:54,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190376290] [2020-04-18 19:17:54,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:17:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:17:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:17:55,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190376290] [2020-04-18 19:17:55,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:17:55,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:17:55,024 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:17:55,027 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:55,034 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:17:55,035 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:17:55,099 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:17:55,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:17:55,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:17:55,105 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-04-18 19:17:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:55,219 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 19:17:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 19:17:55,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:17:55,221 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [427557890] [2020-04-18 19:17:55,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:17:55,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:17:55,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [427557890] [2020-04-18 19:17:55,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:17:55,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:17:55,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:17:55,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:17:55,230 INFO L87 Difference]: Start difference. First operand 8471 states. Second operand 6 states. [2020-04-18 19:17:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:55,652 INFO L93 Difference]: Finished difference Result 15935 states and 55975 transitions. [2020-04-18 19:17:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:17:55,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-04-18 19:17:55,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:17:55,705 INFO L225 Difference]: With dead ends: 15935 [2020-04-18 19:17:55,705 INFO L226 Difference]: Without dead ends: 4308 [2020-04-18 19:17:55,707 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:17:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2020-04-18 19:17:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3822. [2020-04-18 19:17:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3822 states. [2020-04-18 19:17:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 12485 transitions. [2020-04-18 19:17:55,974 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 12485 transitions. Word has length 35 [2020-04-18 19:17:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:17:55,977 INFO L479 AbstractCegarLoop]: Abstraction has 3822 states and 12485 transitions. [2020-04-18 19:17:55,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:17:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 12485 transitions. [2020-04-18 19:17:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:17:55,988 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:17:55,995 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:17:55,996 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:17:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash 5191571, now seen corresponding path program 1 times [2020-04-18 19:17:55,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:17:55,997 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [518006134] [2020-04-18 19:17:55,998 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:56,002 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 117 transitions. [2020-04-18 19:17:56,006 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 19:17:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:17:56,009 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:17:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:56,010 INFO L82 PathProgramCache]: Analyzing trace with hash 5191571, now seen corresponding path program 2 times [2020-04-18 19:17:56,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:17:56,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094554102] [2020-04-18 19:17:56,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:17:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:17:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:17:56,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094554102] [2020-04-18 19:17:56,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:17:56,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:17:56,218 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:17:56,224 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:56,234 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 93 transitions. [2020-04-18 19:17:56,234 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:17:56,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:17:56,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:17:56,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:17:56,280 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 6 states. [2020-04-18 19:17:56,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:56,358 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2020-04-18 19:17:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 117 transitions. [2020-04-18 19:17:56,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:17:56,359 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [518006134] [2020-04-18 19:17:56,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:17:56,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:17:56,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [518006134] [2020-04-18 19:17:56,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:17:56,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:17:56,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:17:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:17:56,361 INFO L87 Difference]: Start difference. First operand 3822 states and 12485 transitions. Second operand 6 states. [2020-04-18 19:17:56,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:56,521 INFO L93 Difference]: Finished difference Result 4542 states and 14736 transitions. [2020-04-18 19:17:56,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:17:56,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 19:17:56,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:17:56,547 INFO L225 Difference]: With dead ends: 4542 [2020-04-18 19:17:56,547 INFO L226 Difference]: Without dead ends: 3120 [2020-04-18 19:17:56,551 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:17:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-04-18 19:17:56,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 3120. [2020-04-18 19:17:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-04-18 19:17:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 10062 transitions. [2020-04-18 19:17:56,671 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 10062 transitions. Word has length 37 [2020-04-18 19:17:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:17:56,673 INFO L479 AbstractCegarLoop]: Abstraction has 3120 states and 10062 transitions. [2020-04-18 19:17:56,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:17:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 10062 transitions. [2020-04-18 19:17:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:17:56,681 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:17:56,681 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:17:56,681 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:17:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:56,683 INFO L82 PathProgramCache]: Analyzing trace with hash 943723428, now seen corresponding path program 1 times [2020-04-18 19:17:56,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:17:56,684 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1777807428] [2020-04-18 19:17:56,686 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:56,693 INFO L259 McrAutomatonBuilder]: Finished intersection with 156 states and 319 transitions. [2020-04-18 19:17:56,696 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-04-18 19:17:56,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:17:56,697 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:17:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:56,698 INFO L82 PathProgramCache]: Analyzing trace with hash 164153842, now seen corresponding path program 2 times [2020-04-18 19:17:56,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:17:56,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637792143] [2020-04-18 19:17:56,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:17:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:17:56,874 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 19:17:56,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637792143] [2020-04-18 19:17:56,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:17:56,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:17:56,876 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:17:56,880 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:56,990 INFO L259 McrAutomatonBuilder]: Finished intersection with 94 states and 159 transitions. [2020-04-18 19:17:56,990 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:17:57,049 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:17:57,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:17:57,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:17:57,050 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 7 states. [2020-04-18 19:17:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:57,435 INFO L93 Difference]: Finished difference Result 191 states and 362 transitions. [2020-04-18 19:17:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 362 transitions. [2020-04-18 19:17:57,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:17:57,436 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:17:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:57,437 INFO L82 PathProgramCache]: Analyzing trace with hash 552294242, now seen corresponding path program 3 times [2020-04-18 19:17:57,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:17:57,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246086795] [2020-04-18 19:17:57,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:17:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:17:57,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:17:57,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246086795] [2020-04-18 19:17:57,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:17:57,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:17:57,541 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:17:57,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:57,565 INFO L259 McrAutomatonBuilder]: Finished intersection with 99 states and 169 transitions. [2020-04-18 19:17:57,566 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:17:57,602 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:17:57,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:17:57,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:17:57,604 INFO L87 Difference]: Start difference. First operand 191 states and 362 transitions. Second operand 6 states. [2020-04-18 19:17:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:57,677 INFO L93 Difference]: Finished difference Result 191 states and 362 transitions. [2020-04-18 19:17:57,677 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 362 transitions. [2020-04-18 19:17:57,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:17:57,680 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1777807428] [2020-04-18 19:17:57,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:17:57,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:17:57,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1777807428] [2020-04-18 19:17:57,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:17:57,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:17:57,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:17:57,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:17:57,689 INFO L87 Difference]: Start difference. First operand 3120 states and 10062 transitions. Second operand 8 states. [2020-04-18 19:17:57,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:57,950 INFO L93 Difference]: Finished difference Result 4504 states and 14491 transitions. [2020-04-18 19:17:57,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-04-18 19:17:57,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-04-18 19:17:57,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:17:57,979 INFO L225 Difference]: With dead ends: 4504 [2020-04-18 19:17:57,979 INFO L226 Difference]: Without dead ends: 3708 [2020-04-18 19:17:57,981 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:17:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2020-04-18 19:17:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 2750. [2020-04-18 19:17:58,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2020-04-18 19:17:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 8766 transitions. [2020-04-18 19:17:58,099 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 8766 transitions. Word has length 39 [2020-04-18 19:17:58,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:17:58,100 INFO L479 AbstractCegarLoop]: Abstraction has 2750 states and 8766 transitions. [2020-04-18 19:17:58,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:17:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 8766 transitions. [2020-04-18 19:17:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:17:58,106 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:17:58,107 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:17:58,107 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:17:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:58,108 INFO L82 PathProgramCache]: Analyzing trace with hash 963394794, now seen corresponding path program 1 times [2020-04-18 19:17:58,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:17:58,108 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [22163199] [2020-04-18 19:17:58,110 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:58,114 INFO L259 McrAutomatonBuilder]: Finished intersection with 148 states and 303 transitions. [2020-04-18 19:17:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-04-18 19:17:58,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:17:58,116 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:17:58,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:58,116 INFO L82 PathProgramCache]: Analyzing trace with hash -826208014, now seen corresponding path program 2 times [2020-04-18 19:17:58,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:17:58,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671227645] [2020-04-18 19:17:58,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:17:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:17:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:17:58,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671227645] [2020-04-18 19:17:58,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:17:58,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:17:58,328 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:17:58,332 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:58,342 INFO L259 McrAutomatonBuilder]: Finished intersection with 100 states and 183 transitions. [2020-04-18 19:17:58,343 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:17:58,411 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:17:58,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:17:58,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:17:58,417 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 8 states. [2020-04-18 19:17:58,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:58,481 INFO L93 Difference]: Finished difference Result 148 states and 303 transitions. [2020-04-18 19:17:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2020-04-18 19:17:58,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:17:58,483 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [22163199] [2020-04-18 19:17:58,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:17:58,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:17:58,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [22163199] [2020-04-18 19:17:58,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:17:58,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:17:58,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:17:58,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:17:58,485 INFO L87 Difference]: Start difference. First operand 2750 states and 8766 transitions. Second operand 8 states. [2020-04-18 19:17:58,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:58,800 INFO L93 Difference]: Finished difference Result 5015 states and 15873 transitions. [2020-04-18 19:17:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:17:58,800 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-04-18 19:17:58,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:17:58,848 INFO L225 Difference]: With dead ends: 5015 [2020-04-18 19:17:58,848 INFO L226 Difference]: Without dead ends: 3090 [2020-04-18 19:17:58,849 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:17:58,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2020-04-18 19:17:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2180. [2020-04-18 19:17:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2020-04-18 19:17:58,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 6790 transitions. [2020-04-18 19:17:58,923 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 6790 transitions. Word has length 39 [2020-04-18 19:17:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:17:58,924 INFO L479 AbstractCegarLoop]: Abstraction has 2180 states and 6790 transitions. [2020-04-18 19:17:58,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:17:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 6790 transitions. [2020-04-18 19:17:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:17:58,930 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:17:58,930 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:17:58,930 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:17:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:58,930 INFO L82 PathProgramCache]: Analyzing trace with hash 498225283, now seen corresponding path program 1 times [2020-04-18 19:17:58,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:17:58,931 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1291501880] [2020-04-18 19:17:58,932 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:58,943 INFO L259 McrAutomatonBuilder]: Finished intersection with 414 states and 1145 transitions. [2020-04-18 19:17:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states. [2020-04-18 19:17:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:17:58,948 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:17:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1649505011, now seen corresponding path program 2 times [2020-04-18 19:17:58,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:17:58,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244553193] [2020-04-18 19:17:58,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:17:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:17:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:17:59,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244553193] [2020-04-18 19:17:59,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:17:59,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:17:59,118 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:17:59,123 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:59,151 INFO L259 McrAutomatonBuilder]: Finished intersection with 216 states and 517 transitions. [2020-04-18 19:17:59,152 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:17:59,288 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:17:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:17:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:17:59,289 INFO L87 Difference]: Start difference. First operand 414 states. Second operand 8 states. [2020-04-18 19:17:59,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:59,617 INFO L93 Difference]: Finished difference Result 519 states and 1344 transitions. [2020-04-18 19:17:59,618 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1344 transitions. [2020-04-18 19:17:59,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:17:59,619 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:17:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:17:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2037645411, now seen corresponding path program 3 times [2020-04-18 19:17:59,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:17:59,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177490533] [2020-04-18 19:17:59,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:17:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:17:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:17:59,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177490533] [2020-04-18 19:17:59,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:17:59,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:17:59,736 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:17:59,740 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:17:59,773 INFO L259 McrAutomatonBuilder]: Finished intersection with 207 states and 487 transitions. [2020-04-18 19:17:59,773 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:17:59,821 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:17:59,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:17:59,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-04-18 19:17:59,822 INFO L87 Difference]: Start difference. First operand 519 states and 1344 transitions. Second operand 8 states. [2020-04-18 19:17:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:17:59,887 INFO L93 Difference]: Finished difference Result 519 states and 1344 transitions. [2020-04-18 19:17:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1344 transitions. [2020-04-18 19:17:59,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:17:59,889 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1291501880] [2020-04-18 19:17:59,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:17:59,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:17:59,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1291501880] [2020-04-18 19:17:59,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 19:17:59,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:17:59,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:17:59,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:17:59,892 INFO L87 Difference]: Start difference. First operand 2180 states and 6790 transitions. Second operand 10 states. [2020-04-18 19:18:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:00,286 INFO L93 Difference]: Finished difference Result 4210 states and 13074 transitions. [2020-04-18 19:18:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:18:00,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-04-18 19:18:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:18:00,300 INFO L225 Difference]: With dead ends: 4210 [2020-04-18 19:18:00,300 INFO L226 Difference]: Without dead ends: 2857 [2020-04-18 19:18:00,301 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:18:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-04-18 19:18:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1897. [2020-04-18 19:18:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1897 states. [2020-04-18 19:18:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 5935 transitions. [2020-04-18 19:18:00,384 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 5935 transitions. Word has length 41 [2020-04-18 19:18:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:18:00,384 INFO L479 AbstractCegarLoop]: Abstraction has 1897 states and 5935 transitions. [2020-04-18 19:18:00,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 19:18:00,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 5935 transitions. [2020-04-18 19:18:00,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:18:00,391 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:18:00,391 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:18:00,391 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:18:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:00,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1650392441, now seen corresponding path program 1 times [2020-04-18 19:18:00,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:18:00,393 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1626699883] [2020-04-18 19:18:00,395 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:00,418 INFO L259 McrAutomatonBuilder]: Finished intersection with 531 states and 1526 transitions. [2020-04-18 19:18:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states. [2020-04-18 19:18:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:18:00,427 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:18:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:00,427 INFO L82 PathProgramCache]: Analyzing trace with hash -989603619, now seen corresponding path program 2 times [2020-04-18 19:18:00,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:00,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133519085] [2020-04-18 19:18:00,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:00,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133519085] [2020-04-18 19:18:00,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:00,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:18:00,532 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:00,569 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:00,607 INFO L259 McrAutomatonBuilder]: Finished intersection with 237 states and 570 transitions. [2020-04-18 19:18:00,607 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:00,678 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:18:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:18:00,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:18:00,679 INFO L87 Difference]: Start difference. First operand 531 states. Second operand 9 states. [2020-04-18 19:18:01,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:01,128 INFO L93 Difference]: Finished difference Result 756 states and 1985 transitions. [2020-04-18 19:18:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1985 transitions. [2020-04-18 19:18:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:18:01,130 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:18:01,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1257499171, now seen corresponding path program 3 times [2020-04-18 19:18:01,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:01,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447546828] [2020-04-18 19:18:01,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:01,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447546828] [2020-04-18 19:18:01,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:01,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:01,258 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:01,264 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:01,295 INFO L259 McrAutomatonBuilder]: Finished intersection with 213 states and 498 transitions. [2020-04-18 19:18:01,296 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:01,339 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:18:01,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:18:01,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:18:01,341 INFO L87 Difference]: Start difference. First operand 756 states and 1985 transitions. Second operand 8 states. [2020-04-18 19:18:01,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:01,566 INFO L93 Difference]: Finished difference Result 834 states and 2094 transitions. [2020-04-18 19:18:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 2094 transitions. [2020-04-18 19:18:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:18:01,569 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:18:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:01,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1650392441, now seen corresponding path program 4 times [2020-04-18 19:18:01,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:01,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279007413] [2020-04-18 19:18:01,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:01,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279007413] [2020-04-18 19:18:01,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:01,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:01,674 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:01,678 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:01,728 INFO L259 McrAutomatonBuilder]: Finished intersection with 242 states and 604 transitions. [2020-04-18 19:18:01,728 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:01,786 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:18:01,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:18:01,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:18:01,803 INFO L87 Difference]: Start difference. First operand 834 states and 2094 transitions. Second operand 7 states. [2020-04-18 19:18:02,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:02,035 INFO L93 Difference]: Finished difference Result 876 states and 2171 transitions. [2020-04-18 19:18:02,035 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2171 transitions. [2020-04-18 19:18:02,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:18:02,038 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1626699883] [2020-04-18 19:18:02,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:18:02,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:18:02,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1626699883] [2020-04-18 19:18:02,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:18:02,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:18:02,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:18:02,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:18:02,040 INFO L87 Difference]: Start difference. First operand 1897 states and 5935 transitions. Second operand 13 states. [2020-04-18 19:18:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:02,413 INFO L93 Difference]: Finished difference Result 3545 states and 10959 transitions. [2020-04-18 19:18:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-04-18 19:18:02,413 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-04-18 19:18:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:18:02,419 INFO L225 Difference]: With dead ends: 3545 [2020-04-18 19:18:02,419 INFO L226 Difference]: Without dead ends: 1147 [2020-04-18 19:18:02,420 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=664, Invalid=2306, Unknown=0, NotChecked=0, Total=2970 [2020-04-18 19:18:02,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-04-18 19:18:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2020-04-18 19:18:02,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-04-18 19:18:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 3457 transitions. [2020-04-18 19:18:02,452 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 3457 transitions. Word has length 42 [2020-04-18 19:18:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:18:02,452 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 3457 transitions. [2020-04-18 19:18:02,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:18:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 3457 transitions. [2020-04-18 19:18:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:18:02,455 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:18:02,455 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:18:02,456 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:18:02,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:02,456 INFO L82 PathProgramCache]: Analyzing trace with hash -2051673357, now seen corresponding path program 1 times [2020-04-18 19:18:02,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:18:02,456 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1445597959] [2020-04-18 19:18:02,459 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:02,474 INFO L259 McrAutomatonBuilder]: Finished intersection with 699 states and 2079 transitions. [2020-04-18 19:18:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states. [2020-04-18 19:18:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:18:02,483 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:18:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:02,484 INFO L82 PathProgramCache]: Analyzing trace with hash -971117389, now seen corresponding path program 2 times [2020-04-18 19:18:02,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:02,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619446735] [2020-04-18 19:18:02,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:02,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619446735] [2020-04-18 19:18:02,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:02,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:02,587 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:02,593 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:02,642 INFO L259 McrAutomatonBuilder]: Finished intersection with 300 states and 714 transitions. [2020-04-18 19:18:02,642 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:02,688 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:18:02,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:18:02,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:18:02,690 INFO L87 Difference]: Start difference. First operand 699 states. Second operand 7 states. [2020-04-18 19:18:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:02,987 INFO L93 Difference]: Finished difference Result 1167 states and 3250 transitions. [2020-04-18 19:18:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 3250 transitions. [2020-04-18 19:18:02,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:18:02,992 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:18:02,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:02,992 INFO L82 PathProgramCache]: Analyzing trace with hash -327916025, now seen corresponding path program 3 times [2020-04-18 19:18:02,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:02,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597829789] [2020-04-18 19:18:02,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:03,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597829789] [2020-04-18 19:18:03,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:03,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:03,089 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:03,093 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:03,143 INFO L259 McrAutomatonBuilder]: Finished intersection with 261 states and 626 transitions. [2020-04-18 19:18:03,143 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:03,182 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:18:03,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:18:03,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:18:03,183 INFO L87 Difference]: Start difference. First operand 1167 states and 3250 transitions. Second operand 8 states. [2020-04-18 19:18:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:03,301 INFO L93 Difference]: Finished difference Result 1197 states and 3293 transitions. [2020-04-18 19:18:03,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 3293 transitions. [2020-04-18 19:18:03,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:18:03,304 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:18:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:03,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1266799009, now seen corresponding path program 4 times [2020-04-18 19:18:03,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:03,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729024134] [2020-04-18 19:18:03,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:03,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729024134] [2020-04-18 19:18:03,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:03,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:03,431 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:03,435 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:03,478 INFO L259 McrAutomatonBuilder]: Finished intersection with 311 states and 749 transitions. [2020-04-18 19:18:03,478 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:03,514 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:18:03,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:18:03,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:18:03,514 INFO L87 Difference]: Start difference. First operand 1197 states and 3293 transitions. Second operand 7 states. [2020-04-18 19:18:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:03,679 INFO L93 Difference]: Finished difference Result 1423 states and 3721 transitions. [2020-04-18 19:18:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3721 transitions. [2020-04-18 19:18:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:18:03,682 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:18:03,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:03,683 INFO L82 PathProgramCache]: Analyzing trace with hash 155319033, now seen corresponding path program 5 times [2020-04-18 19:18:03,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:03,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195974360] [2020-04-18 19:18:03,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:03,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195974360] [2020-04-18 19:18:03,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:03,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:18:03,761 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:03,765 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:03,808 INFO L259 McrAutomatonBuilder]: Finished intersection with 266 states and 643 transitions. [2020-04-18 19:18:03,809 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:03,914 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 21 times. [2020-04-18 19:18:03,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:18:03,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2020-04-18 19:18:03,915 INFO L87 Difference]: Start difference. First operand 1423 states and 3721 transitions. Second operand 6 states. [2020-04-18 19:18:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:03,971 INFO L93 Difference]: Finished difference Result 1423 states and 3721 transitions. [2020-04-18 19:18:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 3721 transitions. [2020-04-18 19:18:03,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:18:03,975 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1445597959] [2020-04-18 19:18:03,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:18:03,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:18:03,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1445597959] [2020-04-18 19:18:03,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:18:03,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:18:03,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:18:03,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:18:03,977 INFO L87 Difference]: Start difference. First operand 1147 states and 3457 transitions. Second operand 15 states. [2020-04-18 19:18:04,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:04,737 INFO L93 Difference]: Finished difference Result 1348 states and 4008 transitions. [2020-04-18 19:18:04,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-18 19:18:04,738 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-04-18 19:18:04,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:18:04,742 INFO L225 Difference]: With dead ends: 1348 [2020-04-18 19:18:04,742 INFO L226 Difference]: Without dead ends: 1012 [2020-04-18 19:18:04,743 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=461, Invalid=2731, Unknown=0, NotChecked=0, Total=3192 [2020-04-18 19:18:04,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-04-18 19:18:04,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2020-04-18 19:18:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-04-18 19:18:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 3007 transitions. [2020-04-18 19:18:04,772 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 3007 transitions. Word has length 43 [2020-04-18 19:18:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:18:04,772 INFO L479 AbstractCegarLoop]: Abstraction has 1012 states and 3007 transitions. [2020-04-18 19:18:04,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:18:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 3007 transitions. [2020-04-18 19:18:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:18:04,775 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:18:04,775 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:18:04,775 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:18:04,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:04,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1395128952, now seen corresponding path program 1 times [2020-04-18 19:18:04,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:18:04,776 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1647014439] [2020-04-18 19:18:04,777 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:04,798 INFO L259 McrAutomatonBuilder]: Finished intersection with 867 states and 2632 transitions. [2020-04-18 19:18:04,804 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states. [2020-04-18 19:18:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:18:04,809 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:18:04,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:04,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1116629972, now seen corresponding path program 2 times [2020-04-18 19:18:04,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:04,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279561895] [2020-04-18 19:18:04,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:04,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:04,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279561895] [2020-04-18 19:18:04,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:04,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:04,918 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:04,922 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:05,024 INFO L259 McrAutomatonBuilder]: Finished intersection with 240 states and 502 transitions. [2020-04-18 19:18:05,024 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:05,082 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:18:05,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:18:05,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:18:05,083 INFO L87 Difference]: Start difference. First operand 867 states. Second operand 7 states. [2020-04-18 19:18:05,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:05,352 INFO L93 Difference]: Finished difference Result 1513 states and 4311 transitions. [2020-04-18 19:18:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 4311 transitions. [2020-04-18 19:18:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:18:05,356 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:18:05,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:05,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1570604228, now seen corresponding path program 3 times [2020-04-18 19:18:05,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:05,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109684738] [2020-04-18 19:18:05,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:05,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109684738] [2020-04-18 19:18:05,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:05,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:05,454 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:05,458 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:05,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 305 states and 744 transitions. [2020-04-18 19:18:05,506 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:05,543 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:18:05,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:18:05,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:18:05,543 INFO L87 Difference]: Start difference. First operand 1513 states and 4311 transitions. Second operand 8 states. [2020-04-18 19:18:05,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:05,694 INFO L93 Difference]: Finished difference Result 1663 states and 4646 transitions. [2020-04-18 19:18:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 4646 transitions. [2020-04-18 19:18:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:18:05,698 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:18:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:05,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1827241386, now seen corresponding path program 4 times [2020-04-18 19:18:05,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:05,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737394816] [2020-04-18 19:18:05,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:05,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737394816] [2020-04-18 19:18:05,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:05,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:18:05,816 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:05,820 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:05,868 INFO L259 McrAutomatonBuilder]: Finished intersection with 296 states and 723 transitions. [2020-04-18 19:18:05,869 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:05,917 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:18:05,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:18:05,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:18:05,918 INFO L87 Difference]: Start difference. First operand 1663 states and 4646 transitions. Second operand 8 states. [2020-04-18 19:18:06,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:06,464 INFO L93 Difference]: Finished difference Result 1812 states and 4938 transitions. [2020-04-18 19:18:06,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 4938 transitions. [2020-04-18 19:18:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:18:06,470 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:18:06,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1014393086, now seen corresponding path program 5 times [2020-04-18 19:18:06,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:06,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664964741] [2020-04-18 19:18:06,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:06,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664964741] [2020-04-18 19:18:06,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:06,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:18:06,610 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:06,614 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:06,649 INFO L259 McrAutomatonBuilder]: Finished intersection with 190 states and 403 transitions. [2020-04-18 19:18:06,650 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:06,708 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:18:06,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:18:06,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:18:06,709 INFO L87 Difference]: Start difference. First operand 1812 states and 4938 transitions. Second operand 6 states. [2020-04-18 19:18:06,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:06,793 INFO L93 Difference]: Finished difference Result 2028 states and 5376 transitions. [2020-04-18 19:18:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5376 transitions. [2020-04-18 19:18:06,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:18:06,800 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:18:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:06,800 INFO L82 PathProgramCache]: Analyzing trace with hash -989091378, now seen corresponding path program 6 times [2020-04-18 19:18:06,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:06,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218741717] [2020-04-18 19:18:06,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:06,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218741717] [2020-04-18 19:18:06,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:06,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:06,894 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:06,900 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:06,980 INFO L259 McrAutomatonBuilder]: Finished intersection with 202 states and 437 transitions. [2020-04-18 19:18:06,980 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:07,126 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:18:07,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:18:07,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=1352, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:18:07,128 INFO L87 Difference]: Start difference. First operand 2028 states and 5376 transitions. Second operand 7 states. [2020-04-18 19:18:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:07,259 INFO L93 Difference]: Finished difference Result 2028 states and 5376 transitions. [2020-04-18 19:18:07,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 5376 transitions. [2020-04-18 19:18:07,262 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:18:07,263 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1647014439] [2020-04-18 19:18:07,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:18:07,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:18:07,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1647014439] [2020-04-18 19:18:07,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 19:18:07,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:18:07,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:18:07,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1829, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 19:18:07,265 INFO L87 Difference]: Start difference. First operand 1012 states and 3007 transitions. Second operand 17 states. [2020-04-18 19:18:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:08,035 INFO L93 Difference]: Finished difference Result 904 states and 2587 transitions. [2020-04-18 19:18:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-04-18 19:18:08,036 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-04-18 19:18:08,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:18:08,040 INFO L225 Difference]: With dead ends: 904 [2020-04-18 19:18:08,040 INFO L226 Difference]: Without dead ends: 652 [2020-04-18 19:18:08,043 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 293 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=632, Invalid=4480, Unknown=0, NotChecked=0, Total=5112 [2020-04-18 19:18:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-04-18 19:18:08,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2020-04-18 19:18:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-04-18 19:18:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1822 transitions. [2020-04-18 19:18:08,060 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1822 transitions. Word has length 44 [2020-04-18 19:18:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:18:08,061 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 1822 transitions. [2020-04-18 19:18:08,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 19:18:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1822 transitions. [2020-04-18 19:18:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:18:08,062 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:18:08,063 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:18:08,063 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:18:08,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:08,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1761307537, now seen corresponding path program 1 times [2020-04-18 19:18:08,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:18:08,064 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [929855712] [2020-04-18 19:18:08,065 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:08,089 INFO L259 McrAutomatonBuilder]: Finished intersection with 1062 states and 3293 transitions. [2020-04-18 19:18:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states. [2020-04-18 19:18:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:18:08,103 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:18:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:08,103 INFO L82 PathProgramCache]: Analyzing trace with hash 600761379, now seen corresponding path program 2 times [2020-04-18 19:18:08,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:08,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821977275] [2020-04-18 19:18:08,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:08,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821977275] [2020-04-18 19:18:08,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:08,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:08,198 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:08,204 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:08,248 INFO L259 McrAutomatonBuilder]: Finished intersection with 282 states and 606 transitions. [2020-04-18 19:18:08,249 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:08,294 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:18:08,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:18:08,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:18:08,300 INFO L87 Difference]: Start difference. First operand 1062 states. Second operand 7 states. [2020-04-18 19:18:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:08,597 INFO L93 Difference]: Finished difference Result 1927 states and 5627 transitions. [2020-04-18 19:18:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 5627 transitions. [2020-04-18 19:18:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:18:08,601 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:18:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:08,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1598332765, now seen corresponding path program 3 times [2020-04-18 19:18:08,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:08,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607403991] [2020-04-18 19:18:08,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:08,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607403991] [2020-04-18 19:18:08,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:08,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:08,694 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:08,699 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:08,749 INFO L259 McrAutomatonBuilder]: Finished intersection with 311 states and 755 transitions. [2020-04-18 19:18:08,749 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:08,787 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:18:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:18:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:18:08,788 INFO L87 Difference]: Start difference. First operand 1927 states and 5627 transitions. Second operand 8 states. [2020-04-18 19:18:08,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:08,932 INFO L93 Difference]: Finished difference Result 2035 states and 5879 transitions. [2020-04-18 19:18:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 5879 transitions. [2020-04-18 19:18:08,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:18:08,937 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:18:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:08,937 INFO L82 PathProgramCache]: Analyzing trace with hash 185916269, now seen corresponding path program 4 times [2020-04-18 19:18:08,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:08,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521220582] [2020-04-18 19:18:08,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:09,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521220582] [2020-04-18 19:18:09,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:09,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:09,045 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:09,050 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:09,106 INFO L259 McrAutomatonBuilder]: Finished intersection with 368 states and 899 transitions. [2020-04-18 19:18:09,106 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:09,144 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:18:09,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:18:09,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:18:09,145 INFO L87 Difference]: Start difference. First operand 2035 states and 5879 transitions. Second operand 7 states. [2020-04-18 19:18:09,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:09,292 INFO L93 Difference]: Finished difference Result 2522 states and 6968 transitions. [2020-04-18 19:18:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 6968 transitions. [2020-04-18 19:18:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:18:09,296 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:18:09,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:18:09,297 INFO L82 PathProgramCache]: Analyzing trace with hash -299324393, now seen corresponding path program 5 times [2020-04-18 19:18:09,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:18:09,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084073184] [2020-04-18 19:18:09,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:18:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:18:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:18:09,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084073184] [2020-04-18 19:18:09,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:18:09,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:18:09,390 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:18:09,394 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:18:09,427 INFO L259 McrAutomatonBuilder]: Finished intersection with 223 states and 486 transitions. [2020-04-18 19:18:09,427 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:18:09,547 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:18:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:18:09,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:18:09,548 INFO L87 Difference]: Start difference. First operand 2522 states and 6968 transitions. Second operand 7 states. [2020-04-18 19:18:09,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:09,800 INFO L93 Difference]: Finished difference Result 2522 states and 6968 transitions. [2020-04-18 19:18:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 6968 transitions. [2020-04-18 19:18:09,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:18:09,804 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [929855712] [2020-04-18 19:18:09,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:18:09,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:18:09,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [929855712] [2020-04-18 19:18:09,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-04-18 19:18:09,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:18:09,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:18:09,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1178, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:18:09,806 INFO L87 Difference]: Start difference. First operand 652 states and 1822 transitions. Second operand 16 states. [2020-04-18 19:18:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:18:10,205 INFO L93 Difference]: Finished difference Result 355 states and 931 transitions. [2020-04-18 19:18:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-04-18 19:18:10,206 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-04-18 19:18:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:18:10,206 INFO L225 Difference]: With dead ends: 355 [2020-04-18 19:18:10,206 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:18:10,207 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=364, Invalid=2392, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 19:18:10,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:18:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:18:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:18:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:18:10,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-04-18 19:18:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:18:10,208 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:18:10,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-04-18 19:18:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:18:10,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:18:10,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:18:10 BasicIcfg [2020-04-18 19:18:10,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:18:10,214 INFO L168 Benchmark]: Toolchain (without parser) took 17818.72 ms. Allocated memory was 144.7 MB in the beginning and 621.8 MB in the end (delta: 477.1 MB). Free memory was 100.4 MB in the beginning and 255.5 MB in the end (delta: -155.1 MB). Peak memory consumption was 322.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:18:10,215 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 19:18:10,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.85 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 98.4 MB in the beginning and 159.6 MB in the end (delta: -61.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:18:10,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.08 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:18:10,217 INFO L168 Benchmark]: Boogie Preprocessor took 25.61 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:18:10,217 INFO L168 Benchmark]: RCFGBuilder took 468.75 ms. Allocated memory is still 202.9 MB. Free memory was 156.2 MB in the beginning and 133.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:18:10,218 INFO L168 Benchmark]: TraceAbstraction took 16545.12 ms. Allocated memory was 202.9 MB in the beginning and 621.8 MB in the end (delta: 418.9 MB). Free memory was 133.8 MB in the beginning and 255.5 MB in the end (delta: -121.7 MB). Peak memory consumption was 297.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:18:10,221 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 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.85 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 98.4 MB in the beginning and 159.6 MB in the end (delta: -61.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.08 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.61 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.75 ms. Allocated memory is still 202.9 MB. Free memory was 156.2 MB in the beginning and 133.8 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16545.12 ms. Allocated memory was 202.9 MB in the beginning and 621.8 MB in the end (delta: 418.9 MB). Free memory was 133.8 MB in the beginning and 255.5 MB in the end (delta: -121.7 MB). Peak memory consumption was 297.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 930 SDtfs, 2031 SDslu, 4979 SDs, 0 SdLazy, 1047 SolverSat, 195 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1543 GetRequests, 1221 SyntacticMatches, 5 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4796 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8471occurred 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: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 3314 StatesRemovedByMinimization, 4 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...