/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:47:06,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:47:06,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:47:06,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:47:06,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:47:06,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:47:06,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:47:06,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:47:06,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:47:06,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:47:06,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:47:06,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:47:06,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:47:06,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:47:06,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:47:06,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:47:06,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:47:06,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:47:06,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:47:06,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:47:06,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:47:06,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:47:06,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:47:06,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:47:06,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:47:06,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:47:06,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:47:06,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:47:06,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:47:06,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:47:06,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:47:06,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:47:06,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:47:06,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:47:06,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:47:06,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:47:06,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:47:06,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:47:06,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:47:06,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:47:06,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:47:06,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:47:06,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:47:06,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:47:06,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:47:06,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:47:06,271 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:47:06,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:47:06,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:47:06,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:47:06,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:47:06,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:47:06,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:47:06,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:47:06,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:47:06,274 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:47:06,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:47:06,274 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:47:06,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:47:06,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:47:06,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:47:06,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:47:06,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:47:06,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:47:06,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:47:06,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:47:06,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:47:06,276 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:47:06,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:47:06,277 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:47:06,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:47:06,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:47:06,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:47:06,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:47:06,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:47:06,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:47:06,606 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:47:06,607 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-04-18 10:47:06,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9d56443f/9ddd65392e5f4857a6145e1d08c78cc8/FLAG94875c48f [2020-04-18 10:47:07,182 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:47:07,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-04-18 10:47:07,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9d56443f/9ddd65392e5f4857a6145e1d08c78cc8/FLAG94875c48f [2020-04-18 10:47:07,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9d56443f/9ddd65392e5f4857a6145e1d08c78cc8 [2020-04-18 10:47:07,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:47:07,506 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:47:07,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:47:07,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:47:07,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:47:07,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:47:07" (1/1) ... [2020-04-18 10:47:07,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6abf99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:07, skipping insertion in model container [2020-04-18 10:47:07,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:47:07" (1/1) ... [2020-04-18 10:47:07,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:47:07,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:47:08,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:47:08,091 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:47:08,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:47:08,218 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:47:08,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08 WrapperNode [2020-04-18 10:47:08,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:47:08,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:47:08,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:47:08,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:47:08,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:47:08,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:47:08,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:47:08,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:47:08,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (1/1) ... [2020-04-18 10:47:08,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:47:08,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:47:08,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:47:08,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:47:08,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (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 10:47:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:47:08,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:47:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:47:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:47:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:47:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:47:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:47:08,380 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:47:08,380 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:47:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:47:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:47:08,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:47:08,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:47:08,383 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 10:47:08,741 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:47:08,741 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:47:08,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:47:08 BoogieIcfgContainer [2020-04-18 10:47:08,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:47:08,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:47:08,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:47:08,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:47:08,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:47:07" (1/3) ... [2020-04-18 10:47:08,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d89f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:47:08, skipping insertion in model container [2020-04-18 10:47:08,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:47:08" (2/3) ... [2020-04-18 10:47:08,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d89f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:47:08, skipping insertion in model container [2020-04-18 10:47:08,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:47:08" (3/3) ... [2020-04-18 10:47:08,754 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-04-18 10:47:08,763 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:47:08,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:47:08,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:47:08,772 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:47:08,799 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,800 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,800 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,801 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,802 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,802 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,803 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,803 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,804 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,805 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,805 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,805 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,806 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,806 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,806 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,807 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,807 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,807 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,813 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,813 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,814 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,814 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,820 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,820 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,821 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,821 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,824 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,824 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,824 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,824 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:47:08,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:47:08,867 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:47:08,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:47:08,867 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:47:08,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:47:08,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:47:08,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:47:08,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:47:08,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:47:08,885 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-04-18 10:47:08,887 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 10:47:08,931 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 10:47:08,931 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:47:08,937 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 10:47:08,939 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 10:47:08,971 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-04-18 10:47:08,972 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:47:08,973 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 10:47:08,978 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1186 [2020-04-18 10:47:08,979 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:47:10,434 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-04-18 10:47:10,703 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-04-18 10:47:10,765 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1951 [2020-04-18 10:47:10,766 INFO L214 etLargeBlockEncoding]: Total number of compositions: 54 [2020-04-18 10:47:10,770 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 10:47:10,797 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 234 states. [2020-04-18 10:47:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 10:47:10,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:47:10,808 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:47:10,810 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:47:10,810 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:47:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:10,819 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 1 times [2020-04-18 10:47:10,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:47:10,829 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1682571765] [2020-04-18 10:47:10,845 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:10,859 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:47:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:47:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:47:10,862 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:47:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:10,862 INFO L82 PathProgramCache]: Analyzing trace with hash 364476878, now seen corresponding path program 2 times [2020-04-18 10:47:10,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:10,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534765182] [2020-04-18 10:47:10,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:11,127 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 10:47:11,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534765182] [2020-04-18 10:47:11,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:11,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:47:11,129 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:11,130 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,133 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:47:11,133 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:11,154 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:47:11,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:11,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:47:11,160 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:47:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,164 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:47:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:47:11,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:11,166 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1682571765] [2020-04-18 10:47:11,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:11,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:47:11,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1682571765] [2020-04-18 10:47:11,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:47:11,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:11,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:11,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:47:11,175 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 10:47:11,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,228 INFO L93 Difference]: Finished difference Result 226 states and 626 transitions. [2020-04-18 10:47:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:47:11,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:47:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:11,260 INFO L225 Difference]: With dead ends: 226 [2020-04-18 10:47:11,260 INFO L226 Difference]: Without dead ends: 178 [2020-04-18 10:47:11,262 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:47:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-04-18 10:47:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-04-18 10:47:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 10:47:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 474 transitions. [2020-04-18 10:47:11,334 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 474 transitions. Word has length 8 [2020-04-18 10:47:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:11,335 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 474 transitions. [2020-04-18 10:47:11,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:47:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 474 transitions. [2020-04-18 10:47:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:47:11,336 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:47:11,336 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:47:11,337 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:47:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119474, now seen corresponding path program 1 times [2020-04-18 10:47:11,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:47:11,338 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [844654355] [2020-04-18 10:47:11,338 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,339 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 10:47:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 10:47:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:47:11,340 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:47:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1586119474, now seen corresponding path program 2 times [2020-04-18 10:47:11,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:11,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291935918] [2020-04-18 10:47:11,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:11,435 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 10:47:11,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291935918] [2020-04-18 10:47:11,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:11,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:47:11,437 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:11,439 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,440 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 10:47:11,441 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:11,460 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:47:11,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:11,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:47:11,461 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 10:47:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,462 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-04-18 10:47:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-04-18 10:47:11,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:11,463 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [844654355] [2020-04-18 10:47:11,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:11,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:47:11,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [844654355] [2020-04-18 10:47:11,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:47:11,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:11,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:11,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:47:11,466 INFO L87 Difference]: Start difference. First operand 178 states and 474 transitions. Second operand 3 states. [2020-04-18 10:47:11,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,478 INFO L93 Difference]: Finished difference Result 168 states and 441 transitions. [2020-04-18 10:47:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:47:11,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 10:47:11,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:11,481 INFO L225 Difference]: With dead ends: 168 [2020-04-18 10:47:11,481 INFO L226 Difference]: Without dead ends: 168 [2020-04-18 10:47:11,482 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:47:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-04-18 10:47:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-04-18 10:47:11,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-04-18 10:47:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 441 transitions. [2020-04-18 10:47:11,500 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 441 transitions. Word has length 9 [2020-04-18 10:47:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:11,500 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 441 transitions. [2020-04-18 10:47:11,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:47:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 441 transitions. [2020-04-18 10:47:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:47:11,502 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:47:11,502 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:47:11,504 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:47:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 1 times [2020-04-18 10:47:11,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:47:11,505 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [846037240] [2020-04-18 10:47:11,505 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,506 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 34 transitions. [2020-04-18 10:47:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 10:47:11,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:47:11,507 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:47:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,508 INFO L82 PathProgramCache]: Analyzing trace with hash 113999627, now seen corresponding path program 2 times [2020-04-18 10:47:11,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:11,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350878079] [2020-04-18 10:47:11,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:11,595 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 10:47:11,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350878079] [2020-04-18 10:47:11,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:11,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:11,597 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:11,597 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,599 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-04-18 10:47:11,599 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:11,613 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:47:11,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:11,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:47:11,614 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2020-04-18 10:47:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,647 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2020-04-18 10:47:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-04-18 10:47:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:47:11,648 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:47:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1925064459, now seen corresponding path program 3 times [2020-04-18 10:47:11,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:11,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259393785] [2020-04-18 10:47:11,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:47:11,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259393785] [2020-04-18 10:47:11,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:11,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:47:11,695 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:11,696 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,698 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-04-18 10:47:11,698 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:11,709 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:47:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:11,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:47:11,710 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand 3 states. [2020-04-18 10:47:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,711 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2020-04-18 10:47:11,711 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2020-04-18 10:47:11,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:11,712 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [846037240] [2020-04-18 10:47:11,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:11,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:47:11,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [846037240] [2020-04-18 10:47:11,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:47:11,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:11,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:47:11,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:47:11,714 INFO L87 Difference]: Start difference. First operand 168 states and 441 transitions. Second operand 5 states. [2020-04-18 10:47:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,765 INFO L93 Difference]: Finished difference Result 234 states and 596 transitions. [2020-04-18 10:47:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 10:47:11,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 10:47:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:11,768 INFO L225 Difference]: With dead ends: 234 [2020-04-18 10:47:11,768 INFO L226 Difference]: Without dead ends: 132 [2020-04-18 10:47:11,769 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:47:11,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-04-18 10:47:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-04-18 10:47:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-04-18 10:47:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-04-18 10:47:11,789 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 10 [2020-04-18 10:47:11,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:11,790 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-04-18 10:47:11,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:47:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-04-18 10:47:11,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:47:11,793 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:47:11,793 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:47:11,793 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:47:11,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,793 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 1 times [2020-04-18 10:47:11,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:47:11,794 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2049690691] [2020-04-18 10:47:11,794 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,795 INFO L259 McrAutomatonBuilder]: Finished intersection with 38 states and 76 transitions. [2020-04-18 10:47:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-04-18 10:47:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:47:11,803 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:47:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,804 INFO L82 PathProgramCache]: Analyzing trace with hash -760978670, now seen corresponding path program 2 times [2020-04-18 10:47:11,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:11,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024945405] [2020-04-18 10:47:11,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:47:11,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024945405] [2020-04-18 10:47:11,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:11,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:11,864 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:11,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,867 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 10:47:11,868 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:11,875 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:47:11,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:11,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:47:11,876 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-04-18 10:47:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,890 INFO L93 Difference]: Finished difference Result 44 states and 83 transitions. [2020-04-18 10:47:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 83 transitions. [2020-04-18 10:47:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:47:11,891 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:47:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash 452544104, now seen corresponding path program 3 times [2020-04-18 10:47:11,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:11,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357378806] [2020-04-18 10:47:11,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:11,949 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 10:47:11,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357378806] [2020-04-18 10:47:11,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:11,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:11,950 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:11,953 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:11,955 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-04-18 10:47:11,956 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:11,962 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:47:11,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:11,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:47:11,963 INFO L87 Difference]: Start difference. First operand 44 states and 83 transitions. Second operand 3 states. [2020-04-18 10:47:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:11,966 INFO L93 Difference]: Finished difference Result 49 states and 87 transitions. [2020-04-18 10:47:11,967 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 87 transitions. [2020-04-18 10:47:11,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 10:47:11,967 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:47:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:11,968 INFO L82 PathProgramCache]: Analyzing trace with hash 452543204, now seen corresponding path program 4 times [2020-04-18 10:47:11,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:11,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896485038] [2020-04-18 10:47:11,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:12,026 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 10:47:12,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896485038] [2020-04-18 10:47:12,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:12,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:12,027 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:12,028 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,031 INFO L259 McrAutomatonBuilder]: Finished intersection with 21 states and 31 transitions. [2020-04-18 10:47:12,031 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:12,095 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:47:12,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:47:12,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:47:12,096 INFO L87 Difference]: Start difference. First operand 49 states and 87 transitions. Second operand 5 states. [2020-04-18 10:47:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,110 INFO L93 Difference]: Finished difference Result 49 states and 87 transitions. [2020-04-18 10:47:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 87 transitions. [2020-04-18 10:47:12,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:12,112 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2049690691] [2020-04-18 10:47:12,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:12,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:47:12,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2049690691] [2020-04-18 10:47:12,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:47:12,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:12,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:47:12,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:47:12,114 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 7 states. [2020-04-18 10:47:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,183 INFO L93 Difference]: Finished difference Result 144 states and 346 transitions. [2020-04-18 10:47:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:47:12,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-04-18 10:47:12,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:12,188 INFO L225 Difference]: With dead ends: 144 [2020-04-18 10:47:12,189 INFO L226 Difference]: Without dead ends: 60 [2020-04-18 10:47:12,189 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:47:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-04-18 10:47:12,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-04-18 10:47:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-04-18 10:47:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2020-04-18 10:47:12,204 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 11 [2020-04-18 10:47:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:12,204 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2020-04-18 10:47:12,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:47:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2020-04-18 10:47:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:47:12,205 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:47:12,205 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:47:12,205 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:47:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 1 times [2020-04-18 10:47:12,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:47:12,206 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1426609369] [2020-04-18 10:47:12,208 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,209 INFO L259 McrAutomatonBuilder]: Finished intersection with 56 states and 122 transitions. [2020-04-18 10:47:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-04-18 10:47:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:47:12,212 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:47:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,212 INFO L82 PathProgramCache]: Analyzing trace with hash -197698324, now seen corresponding path program 2 times [2020-04-18 10:47:12,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:12,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804403381] [2020-04-18 10:47:12,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:12,259 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 10:47:12,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804403381] [2020-04-18 10:47:12,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:12,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:12,261 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:12,262 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,266 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 41 transitions. [2020-04-18 10:47:12,266 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:12,274 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:47:12,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:12,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:47:12,274 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-04-18 10:47:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,292 INFO L93 Difference]: Finished difference Result 68 states and 142 transitions. [2020-04-18 10:47:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 142 transitions. [2020-04-18 10:47:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:47:12,293 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:47:12,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1143894380, now seen corresponding path program 3 times [2020-04-18 10:47:12,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:12,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998182535] [2020-04-18 10:47:12,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:12,338 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 10:47:12,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998182535] [2020-04-18 10:47:12,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:12,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:12,339 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:12,341 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,344 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 10:47:12,344 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:12,355 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:47:12,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:12,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:47:12,356 INFO L87 Difference]: Start difference. First operand 68 states and 142 transitions. Second operand 3 states. [2020-04-18 10:47:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,361 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2020-04-18 10:47:12,361 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 150 transitions. [2020-04-18 10:47:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:47:12,361 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:47:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1143893480, now seen corresponding path program 4 times [2020-04-18 10:47:12,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:12,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357238544] [2020-04-18 10:47:12,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:12,467 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 10:47:12,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357238544] [2020-04-18 10:47:12,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:12,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:12,468 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:12,469 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,472 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-04-18 10:47:12,472 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:12,489 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:47:12,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:12,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:47:12,490 INFO L87 Difference]: Start difference. First operand 76 states and 150 transitions. Second operand 4 states. [2020-04-18 10:47:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,500 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2020-04-18 10:47:12,500 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 150 transitions. [2020-04-18 10:47:12,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:12,501 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1426609369] [2020-04-18 10:47:12,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:12,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:47:12,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1426609369] [2020-04-18 10:47:12,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:47:12,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:12,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:47:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:47:12,502 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand 7 states. [2020-04-18 10:47:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,659 INFO L93 Difference]: Finished difference Result 73 states and 142 transitions. [2020-04-18 10:47:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:47:12,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-04-18 10:47:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:12,660 INFO L225 Difference]: With dead ends: 73 [2020-04-18 10:47:12,661 INFO L226 Difference]: Without dead ends: 52 [2020-04-18 10:47:12,661 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-04-18 10:47:12,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-04-18 10:47:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-04-18 10:47:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-04-18 10:47:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 101 transitions. [2020-04-18 10:47:12,665 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 101 transitions. Word has length 12 [2020-04-18 10:47:12,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:12,665 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 101 transitions. [2020-04-18 10:47:12,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:47:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 101 transitions. [2020-04-18 10:47:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:47:12,666 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:47:12,666 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:47:12,667 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:47:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 1 times [2020-04-18 10:47:12,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:47:12,667 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2098319747] [2020-04-18 10:47:12,668 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,669 INFO L259 McrAutomatonBuilder]: Finished intersection with 74 states and 173 transitions. [2020-04-18 10:47:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 10:47:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:47:12,671 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:47:12,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1833698849, now seen corresponding path program 2 times [2020-04-18 10:47:12,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:12,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104009745] [2020-04-18 10:47:12,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:12,701 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 10:47:12,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104009745] [2020-04-18 10:47:12,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:12,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:12,702 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:12,703 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,706 INFO L259 McrAutomatonBuilder]: Finished intersection with 32 states and 51 transitions. [2020-04-18 10:47:12,707 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:12,715 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:12,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:12,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:47:12,715 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-04-18 10:47:12,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,731 INFO L93 Difference]: Finished difference Result 98 states and 225 transitions. [2020-04-18 10:47:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 225 transitions. [2020-04-18 10:47:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:47:12,732 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:47:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1100969311, now seen corresponding path program 3 times [2020-04-18 10:47:12,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:12,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847440078] [2020-04-18 10:47:12,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:12,760 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 10:47:12,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847440078] [2020-04-18 10:47:12,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:12,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:12,761 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:12,762 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,764 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 32 transitions. [2020-04-18 10:47:12,765 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:12,771 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:12,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:12,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:47:12,772 INFO L87 Difference]: Start difference. First operand 98 states and 225 transitions. Second operand 3 states. [2020-04-18 10:47:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,776 INFO L93 Difference]: Finished difference Result 111 states and 241 transitions. [2020-04-18 10:47:12,777 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 241 transitions. [2020-04-18 10:47:12,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:47:12,777 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:47:12,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1100968411, now seen corresponding path program 4 times [2020-04-18 10:47:12,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:12,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34057940] [2020-04-18 10:47:12,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:12,814 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 10:47:12,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34057940] [2020-04-18 10:47:12,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:12,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:12,815 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:12,816 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,819 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-04-18 10:47:12,819 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:12,834 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:47:12,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:12,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:47:12,835 INFO L87 Difference]: Start difference. First operand 111 states and 241 transitions. Second operand 4 states. [2020-04-18 10:47:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,851 INFO L93 Difference]: Finished difference Result 136 states and 276 transitions. [2020-04-18 10:47:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 276 transitions. [2020-04-18 10:47:12,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:47:12,851 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:47:12,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:12,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1190230917, now seen corresponding path program 5 times [2020-04-18 10:47:12,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:12,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329381120] [2020-04-18 10:47:12,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:12,897 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 10:47:12,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329381120] [2020-04-18 10:47:12,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:12,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:12,898 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:12,899 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:12,901 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-04-18 10:47:12,901 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:12,912 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:47:12,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:47:12,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:47:12,912 INFO L87 Difference]: Start difference. First operand 136 states and 276 transitions. Second operand 5 states. [2020-04-18 10:47:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:12,954 INFO L93 Difference]: Finished difference Result 136 states and 276 transitions. [2020-04-18 10:47:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 276 transitions. [2020-04-18 10:47:12,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:12,955 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2098319747] [2020-04-18 10:47:12,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:12,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:47:12,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2098319747] [2020-04-18 10:47:12,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 10:47:12,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:12,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:47:12,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:47:12,957 INFO L87 Difference]: Start difference. First operand 52 states and 101 transitions. Second operand 8 states. [2020-04-18 10:47:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,090 INFO L93 Difference]: Finished difference Result 53 states and 91 transitions. [2020-04-18 10:47:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:47:13,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-04-18 10:47:13,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:13,092 INFO L225 Difference]: With dead ends: 53 [2020-04-18 10:47:13,092 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 10:47:13,092 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-04-18 10:47:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 10:47:13,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 10:47:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 10:47:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2020-04-18 10:47:13,096 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 61 transitions. Word has length 13 [2020-04-18 10:47:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:13,096 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 61 transitions. [2020-04-18 10:47:13,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 10:47:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-04-18 10:47:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:47:13,097 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:47:13,097 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:47:13,097 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:47:13,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 1 times [2020-04-18 10:47:13,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:47:13,098 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [8409776] [2020-04-18 10:47:13,099 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,100 INFO L259 McrAutomatonBuilder]: Finished intersection with 98 states and 238 transitions. [2020-04-18 10:47:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-04-18 10:47:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:47:13,102 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:47:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1010088817, now seen corresponding path program 2 times [2020-04-18 10:47:13,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294860561] [2020-04-18 10:47:13,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:13,130 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 10:47:13,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294860561] [2020-04-18 10:47:13,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:13,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:13,131 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:13,132 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,136 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-04-18 10:47:13,136 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:13,144 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:13,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:13,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:47:13,145 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 4 states. [2020-04-18 10:47:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,164 INFO L93 Difference]: Finished difference Result 134 states and 322 transitions. [2020-04-18 10:47:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 322 transitions. [2020-04-18 10:47:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:47:13,165 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:47:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,166 INFO L82 PathProgramCache]: Analyzing trace with hash -229689073, now seen corresponding path program 3 times [2020-04-18 10:47:13,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537664188] [2020-04-18 10:47:13,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:47:13,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537664188] [2020-04-18 10:47:13,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:13,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:13,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:13,194 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,197 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 37 transitions. [2020-04-18 10:47:13,197 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:13,210 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:13,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:13,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:47:13,210 INFO L87 Difference]: Start difference. First operand 134 states and 322 transitions. Second operand 3 states. [2020-04-18 10:47:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,216 INFO L93 Difference]: Finished difference Result 152 states and 346 transitions. [2020-04-18 10:47:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 346 transitions. [2020-04-18 10:47:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:47:13,217 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:47:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,217 INFO L82 PathProgramCache]: Analyzing trace with hash -229703923, now seen corresponding path program 4 times [2020-04-18 10:47:13,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893851637] [2020-04-18 10:47:13,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:13,308 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 10:47:13,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893851637] [2020-04-18 10:47:13,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:13,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:13,310 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:13,312 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,315 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 10:47:13,315 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:13,338 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:13,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:13,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:47:13,340 INFO L87 Difference]: Start difference. First operand 152 states and 346 transitions. Second operand 4 states. [2020-04-18 10:47:13,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,367 INFO L93 Difference]: Finished difference Result 202 states and 426 transitions. [2020-04-18 10:47:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 426 transitions. [2020-04-18 10:47:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:47:13,369 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:47:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1757560941, now seen corresponding path program 5 times [2020-04-18 10:47:13,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096818926] [2020-04-18 10:47:13,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:13,452 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 10:47:13,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096818926] [2020-04-18 10:47:13,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:13,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:13,456 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:13,457 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,461 INFO L259 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-04-18 10:47:13,461 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:13,479 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:47:13,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:47:13,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:47:13,480 INFO L87 Difference]: Start difference. First operand 202 states and 426 transitions. Second operand 5 states. [2020-04-18 10:47:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,523 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2020-04-18 10:47:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 434 transitions. [2020-04-18 10:47:13,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:47:13,524 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:47:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1757733921, now seen corresponding path program 6 times [2020-04-18 10:47:13,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787004887] [2020-04-18 10:47:13,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:13,568 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 10:47:13,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787004887] [2020-04-18 10:47:13,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:13,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:47:13,570 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:13,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,572 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-04-18 10:47:13,573 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:13,584 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:13,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:47:13,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:47:13,584 INFO L87 Difference]: Start difference. First operand 212 states and 434 transitions. Second operand 6 states. [2020-04-18 10:47:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,627 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2020-04-18 10:47:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 434 transitions. [2020-04-18 10:47:13,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:13,629 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [8409776] [2020-04-18 10:47:13,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:13,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:47:13,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [8409776] [2020-04-18 10:47:13,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 10:47:13,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:13,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:47:13,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:47:13,630 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. Second operand 9 states. [2020-04-18 10:47:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,783 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-04-18 10:47:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-04-18 10:47:13,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-04-18 10:47:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:13,784 INFO L225 Difference]: With dead ends: 35 [2020-04-18 10:47:13,785 INFO L226 Difference]: Without dead ends: 29 [2020-04-18 10:47:13,785 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:47:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-04-18 10:47:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-04-18 10:47:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-04-18 10:47:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-04-18 10:47:13,788 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 14 [2020-04-18 10:47:13,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:13,788 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-04-18 10:47:13,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 10:47:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-04-18 10:47:13,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:13,789 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:47:13,789 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:47:13,789 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:47:13,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1250665313, now seen corresponding path program 1 times [2020-04-18 10:47:13,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:47:13,790 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1903589533] [2020-04-18 10:47:13,791 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,794 INFO L259 McrAutomatonBuilder]: Finished intersection with 186 states and 504 transitions. [2020-04-18 10:47:13,795 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-04-18 10:47:13,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:13,797 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:47:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash -32739391, now seen corresponding path program 2 times [2020-04-18 10:47:13,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949935041] [2020-04-18 10:47:13,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:13,823 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 10:47:13,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949935041] [2020-04-18 10:47:13,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:13,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:13,825 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:13,826 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,830 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 62 transitions. [2020-04-18 10:47:13,830 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:13,839 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:13,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:13,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:47:13,840 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-04-18 10:47:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,856 INFO L93 Difference]: Finished difference Result 288 states and 767 transitions. [2020-04-18 10:47:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 767 transitions. [2020-04-18 10:47:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:13,858 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:47:13,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1687862207, now seen corresponding path program 3 times [2020-04-18 10:47:13,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302640877] [2020-04-18 10:47:13,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:13,884 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 10:47:13,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302640877] [2020-04-18 10:47:13,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:13,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:13,886 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:13,887 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,891 INFO L259 McrAutomatonBuilder]: Finished intersection with 30 states and 43 transitions. [2020-04-18 10:47:13,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:13,898 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:13,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:13,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:47:13,898 INFO L87 Difference]: Start difference. First operand 288 states and 767 transitions. Second operand 3 states. [2020-04-18 10:47:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,903 INFO L93 Difference]: Finished difference Result 342 states and 875 transitions. [2020-04-18 10:47:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 875 transitions. [2020-04-18 10:47:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:13,904 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:47:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1702197797, now seen corresponding path program 4 times [2020-04-18 10:47:13,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710679527] [2020-04-18 10:47:13,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:13,933 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 10:47:13,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710679527] [2020-04-18 10:47:13,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:13,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:13,935 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:13,936 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:13,940 INFO L259 McrAutomatonBuilder]: Finished intersection with 31 states and 44 transitions. [2020-04-18 10:47:13,941 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:13,954 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 10:47:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:47:13,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:47:13,959 INFO L87 Difference]: Start difference. First operand 342 states and 875 transitions. Second operand 3 states. [2020-04-18 10:47:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:13,968 INFO L93 Difference]: Finished difference Result 478 states and 1169 transitions. [2020-04-18 10:47:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1169 transitions. [2020-04-18 10:47:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:13,970 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:47:13,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:13,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1702133057, now seen corresponding path program 5 times [2020-04-18 10:47:13,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:13,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264855179] [2020-04-18 10:47:13,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:14,012 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 10:47:14,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264855179] [2020-04-18 10:47:14,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:14,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:14,014 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:14,015 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:14,041 INFO L259 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-04-18 10:47:14,041 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:14,062 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:14,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:47:14,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:47:14,065 INFO L87 Difference]: Start difference. First operand 478 states and 1169 transitions. Second operand 4 states. [2020-04-18 10:47:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:14,096 INFO L93 Difference]: Finished difference Result 682 states and 1554 transitions. [2020-04-18 10:47:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1554 transitions. [2020-04-18 10:47:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:14,099 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:47:14,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:14,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1093921823, now seen corresponding path program 6 times [2020-04-18 10:47:14,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:14,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447683383] [2020-04-18 10:47:14,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:14,159 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 10:47:14,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447683383] [2020-04-18 10:47:14,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:14,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:47:14,160 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:14,161 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:14,164 INFO L259 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-04-18 10:47:14,164 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:14,176 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:47:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:47:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:47:14,177 INFO L87 Difference]: Start difference. First operand 682 states and 1554 transitions. Second operand 5 states. [2020-04-18 10:47:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:14,239 INFO L93 Difference]: Finished difference Result 748 states and 1636 transitions. [2020-04-18 10:47:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1636 transitions. [2020-04-18 10:47:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:14,241 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:47:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1260155603, now seen corresponding path program 7 times [2020-04-18 10:47:14,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:14,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001353959] [2020-04-18 10:47:14,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:14,296 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 10:47:14,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001353959] [2020-04-18 10:47:14,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:14,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:47:14,298 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:14,299 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:14,302 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 26 transitions. [2020-04-18 10:47:14,302 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:14,319 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:14,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:47:14,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:47:14,320 INFO L87 Difference]: Start difference. First operand 748 states and 1636 transitions. Second operand 6 states. [2020-04-18 10:47:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:14,421 INFO L93 Difference]: Finished difference Result 756 states and 1640 transitions. [2020-04-18 10:47:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1640 transitions. [2020-04-18 10:47:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:14,425 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 10:47:14,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:14,425 INFO L82 PathProgramCache]: Analyzing trace with hash 722630491, now seen corresponding path program 8 times [2020-04-18 10:47:14,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:14,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719302577] [2020-04-18 10:47:14,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:14,459 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 10:47:14,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719302577] [2020-04-18 10:47:14,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:14,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:47:14,460 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:14,462 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:14,465 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 64 transitions. [2020-04-18 10:47:14,466 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:14,539 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:47:14,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:47:14,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:47:14,539 INFO L87 Difference]: Start difference. First operand 756 states and 1640 transitions. Second operand 6 states. [2020-04-18 10:47:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:14,595 INFO L93 Difference]: Finished difference Result 936 states and 1994 transitions. [2020-04-18 10:47:14,595 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1994 transitions. [2020-04-18 10:47:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-18 10:47:14,597 INFO L105 Mcr]: ---- MCR iteration 7 ---- [2020-04-18 10:47:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:47:14,598 INFO L82 PathProgramCache]: Analyzing trace with hash 942358043, now seen corresponding path program 9 times [2020-04-18 10:47:14,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:47:14,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926226459] [2020-04-18 10:47:14,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:47:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:47:14,623 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 10:47:14,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926226459] [2020-04-18 10:47:14,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:47:14,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:47:14,624 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:47:14,625 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:47:14,629 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 45 transitions. [2020-04-18 10:47:14,629 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:47:14,678 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:47:14,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:47:14,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-04-18 10:47:14,679 INFO L87 Difference]: Start difference. First operand 936 states and 1994 transitions. Second operand 5 states. [2020-04-18 10:47:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:14,705 INFO L93 Difference]: Finished difference Result 1198 states and 2503 transitions. [2020-04-18 10:47:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 2503 transitions. [2020-04-18 10:47:14,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:14,708 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1903589533] [2020-04-18 10:47:14,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:47:14,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:47:14,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1903589533] [2020-04-18 10:47:14,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 10:47:14,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:47:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 10:47:14,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-04-18 10:47:14,710 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 15 states. [2020-04-18 10:47:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:47:14,954 INFO L93 Difference]: Finished difference Result 28 states and 42 transitions. [2020-04-18 10:47:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 10:47:14,954 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-04-18 10:47:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:47:14,954 INFO L225 Difference]: With dead ends: 28 [2020-04-18 10:47:14,954 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:47:14,955 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2020-04-18 10:47:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:47:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:47:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:47:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:47:14,957 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-04-18 10:47:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:47:14,957 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:47:14,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 10:47:14,957 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:47:14,958 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:47:14,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:47:14 BasicIcfg [2020-04-18 10:47:14,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:47:14,963 INFO L168 Benchmark]: Toolchain (without parser) took 7477.27 ms. Allocated memory was 137.9 MB in the beginning and 289.4 MB in the end (delta: 151.5 MB). Free memory was 101.3 MB in the beginning and 115.8 MB in the end (delta: -14.5 MB). Peak memory consumption was 137.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:14,964 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 10:47:14,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.46 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 158.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:14,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.11 ms. Allocated memory is still 201.9 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:14,965 INFO L168 Benchmark]: Boogie Preprocessor took 26.79 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:14,966 INFO L168 Benchmark]: RCFGBuilder took 438.57 ms. Allocated memory is still 201.9 MB. Free memory was 155.3 MB in the beginning and 133.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:14,966 INFO L168 Benchmark]: TraceAbstraction took 6214.33 ms. Allocated memory was 201.9 MB in the beginning and 289.4 MB in the end (delta: 87.6 MB). Free memory was 132.9 MB in the beginning and 115.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:47:14,969 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.46 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 158.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.11 ms. Allocated memory is still 201.9 MB. Free memory was 158.7 MB in the beginning and 156.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.79 ms. Allocated memory is still 201.9 MB. Free memory was 156.7 MB in the beginning and 155.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.57 ms. Allocated memory is still 201.9 MB. Free memory was 155.3 MB in the beginning and 133.6 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6214.33 ms. Allocated memory was 201.9 MB in the beginning and 289.4 MB in the end (delta: 87.6 MB). Free memory was 132.9 MB in the beginning and 115.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 104.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1186 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 634 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1951 CheckedPairsTotal, 54 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 120 SDtfs, 175 SDslu, 244 SDs, 0 SdLazy, 295 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 455 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...