/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:11:58,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:11:58,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:11:58,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:11:58,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:11:58,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:11:58,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:11:58,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:11:58,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:11:58,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:11:58,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:11:58,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:11:58,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:11:58,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:11:58,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:11:58,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:11:58,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:11:58,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:11:58,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:11:58,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:11:58,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:11:58,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:11:58,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:11:58,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:11:58,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:11:58,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:11:58,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:11:58,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:11:58,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:11:58,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:11:58,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:11:58,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:11:58,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:11:58,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:11:58,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:11:58,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:11:58,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:11:58,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:11:58,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:11:58,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:11:58,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:11:58,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf [2020-04-18 19:11:58,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:11:58,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:11:58,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:11:58,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:11:58,377 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:11:58,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:11:58,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:11:58,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:11:58,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:11:58,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:11:58,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:11:58,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:11:58,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:11:58,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:11:58,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:11:58,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:11:58,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:11:58,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:11:58,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:11:58,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:11:58,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:11:58,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:11:58,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:11:58,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:11:58,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:11:58,382 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:11:58,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:11:58,382 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:11:58,382 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:11:58,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:11:58,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:11:58,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:11:58,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:11:58,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:11:58,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:11:58,682 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:11:58,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-18 19:11:58,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e58f9492/a5378e13c33c4afaafe8fd6547bffd9c/FLAGeeb5db474 [2020-04-18 19:11:59,261 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:11:59,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-04-18 19:11:59,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e58f9492/a5378e13c33c4afaafe8fd6547bffd9c/FLAGeeb5db474 [2020-04-18 19:11:59,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e58f9492/a5378e13c33c4afaafe8fd6547bffd9c [2020-04-18 19:11:59,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:11:59,638 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:11:59,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:11:59,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:11:59,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:11:59,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:11:59" (1/1) ... [2020-04-18 19:11:59,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b19db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:11:59, skipping insertion in model container [2020-04-18 19:11:59,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:11:59" (1/1) ... [2020-04-18 19:11:59,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:11:59,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:12:00,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:12:00,184 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:12:00,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:12:00,301 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:12:00,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00 WrapperNode [2020-04-18 19:12:00,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:12:00,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:12:00,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:12:00,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:12:00,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:12:00,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:12:00,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:12:00,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:12:00,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... [2020-04-18 19:12:00,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:12:00,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:12:00,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:12:00,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:12:00,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:12:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:12:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:12:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:12:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:12:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:12:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:12:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:12:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:12:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:12:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:12:00,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:12:00,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:12:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:12:00,447 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:12:00,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:12:00,846 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:12:00,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:12:00 BoogieIcfgContainer [2020-04-18 19:12:00,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:12:00,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:12:00,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:12:00,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:12:00,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:11:59" (1/3) ... [2020-04-18 19:12:00,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4992591b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:12:00, skipping insertion in model container [2020-04-18 19:12:00,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:12:00" (2/3) ... [2020-04-18 19:12:00,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4992591b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:12:00, skipping insertion in model container [2020-04-18 19:12:00,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:12:00" (3/3) ... [2020-04-18 19:12:00,858 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-04-18 19:12:00,866 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:12:00,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:12:00,873 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:12:00,875 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:12:00,906 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,907 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,907 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,908 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,909 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,909 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,910 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,910 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,910 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,910 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,911 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,912 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,912 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,912 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,913 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,913 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,913 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,914 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,921 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,921 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,921 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,922 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,932 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,932 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,932 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,933 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,935 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,935 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,936 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,936 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:12:00,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:12:00,978 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:12:00,978 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:12:00,978 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:12:00,978 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:12:00,979 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:12:00,979 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:12:00,979 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:12:00,979 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:12:00,993 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 19:12:01,486 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8471 states. [2020-04-18 19:12:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 8471 states. [2020-04-18 19:12:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:12:01,525 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:01,527 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:01,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:01,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1862511890, now seen corresponding path program 1 times [2020-04-18 19:12:01,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:01,543 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [916496529] [2020-04-18 19:12:01,560 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:01,578 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:12:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 19:12:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:12:01,582 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:01,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:01,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1862511890, now seen corresponding path program 2 times [2020-04-18 19:12:01,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:01,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468648735] [2020-04-18 19:12:01,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:02,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468648735] [2020-04-18 19:12:02,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:02,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:12:02,060 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:02,064 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:02,074 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:12:02,074 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:02,150 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:12:02,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:12:02,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:12:02,157 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-04-18 19:12:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:02,284 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 19:12:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 19:12:02,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:02,286 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [916496529] [2020-04-18 19:12:02,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:02,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:12:02,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [916496529] [2020-04-18 19:12:02,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:12:02,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:02,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:12:02,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:12:02,294 INFO L87 Difference]: Start difference. First operand 8471 states. Second operand 6 states. [2020-04-18 19:12:02,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:02,794 INFO L93 Difference]: Finished difference Result 20295 states and 70269 transitions. [2020-04-18 19:12:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:12:02,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-04-18 19:12:02,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:02,880 INFO L225 Difference]: With dead ends: 20295 [2020-04-18 19:12:02,881 INFO L226 Difference]: Without dead ends: 6443 [2020-04-18 19:12:02,882 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:12:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6443 states. [2020-04-18 19:12:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6443 to 5309. [2020-04-18 19:12:03,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5309 states. [2020-04-18 19:12:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17850 transitions. [2020-04-18 19:12:03,297 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17850 transitions. Word has length 35 [2020-04-18 19:12:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:03,299 INFO L479 AbstractCegarLoop]: Abstraction has 5309 states and 17850 transitions. [2020-04-18 19:12:03,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:12:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17850 transitions. [2020-04-18 19:12:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:12:03,310 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:03,310 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:03,310 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:03,311 INFO L82 PathProgramCache]: Analyzing trace with hash 5191571, now seen corresponding path program 1 times [2020-04-18 19:12:03,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:03,311 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [750117134] [2020-04-18 19:12:03,312 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:03,314 INFO L259 McrAutomatonBuilder]: Finished intersection with 78 states and 117 transitions. [2020-04-18 19:12:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-04-18 19:12:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:12:03,316 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:03,317 INFO L82 PathProgramCache]: Analyzing trace with hash 5191571, now seen corresponding path program 2 times [2020-04-18 19:12:03,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:03,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140450191] [2020-04-18 19:12:03,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:03,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140450191] [2020-04-18 19:12:03,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:03,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:03,570 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:03,574 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:03,581 INFO L259 McrAutomatonBuilder]: Finished intersection with 66 states and 93 transitions. [2020-04-18 19:12:03,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:03,633 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:12:03,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:03,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:12:03,635 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 7 states. [2020-04-18 19:12:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:03,715 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2020-04-18 19:12:03,715 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 117 transitions. [2020-04-18 19:12:03,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:03,716 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [750117134] [2020-04-18 19:12:03,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:03,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:12:03,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [750117134] [2020-04-18 19:12:03,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:12:03,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:03,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:03,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:12:03,720 INFO L87 Difference]: Start difference. First operand 5309 states and 17850 transitions. Second operand 7 states. [2020-04-18 19:12:04,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:04,105 INFO L93 Difference]: Finished difference Result 7791 states and 25742 transitions. [2020-04-18 19:12:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:12:04,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 19:12:04,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:04,148 INFO L225 Difference]: With dead ends: 7791 [2020-04-18 19:12:04,148 INFO L226 Difference]: Without dead ends: 5843 [2020-04-18 19:12:04,152 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:12:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2020-04-18 19:12:04,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 4724. [2020-04-18 19:12:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4724 states. [2020-04-18 19:12:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4724 states to 4724 states and 15706 transitions. [2020-04-18 19:12:04,337 INFO L78 Accepts]: Start accepts. Automaton has 4724 states and 15706 transitions. Word has length 37 [2020-04-18 19:12:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:04,338 INFO L479 AbstractCegarLoop]: Abstraction has 4724 states and 15706 transitions. [2020-04-18 19:12:04,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:12:04,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4724 states and 15706 transitions. [2020-04-18 19:12:04,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:12:04,351 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:04,351 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:04,351 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:04,353 INFO L82 PathProgramCache]: Analyzing trace with hash -424900641, now seen corresponding path program 1 times [2020-04-18 19:12:04,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:04,354 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [705595367] [2020-04-18 19:12:04,355 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:04,357 INFO L259 McrAutomatonBuilder]: Finished intersection with 75 states and 110 transitions. [2020-04-18 19:12:04,359 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-04-18 19:12:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:12:04,359 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:04,360 INFO L82 PathProgramCache]: Analyzing trace with hash -424900641, now seen corresponding path program 2 times [2020-04-18 19:12:04,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:04,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131934966] [2020-04-18 19:12:04,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:04,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131934966] [2020-04-18 19:12:04,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:04,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:04,495 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:04,499 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:04,504 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 74 transitions. [2020-04-18 19:12:04,505 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:04,568 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:12:04,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:04,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:12:04,569 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 7 states. [2020-04-18 19:12:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:04,648 INFO L93 Difference]: Finished difference Result 75 states and 110 transitions. [2020-04-18 19:12:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 110 transitions. [2020-04-18 19:12:04,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:04,649 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [705595367] [2020-04-18 19:12:04,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:04,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:12:04,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [705595367] [2020-04-18 19:12:04,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:12:04,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:04,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:04,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:12:04,651 INFO L87 Difference]: Start difference. First operand 4724 states and 15706 transitions. Second operand 7 states. [2020-04-18 19:12:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:04,895 INFO L93 Difference]: Finished difference Result 6405 states and 21104 transitions. [2020-04-18 19:12:04,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:12:04,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:12:04,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:04,941 INFO L225 Difference]: With dead ends: 6405 [2020-04-18 19:12:04,941 INFO L226 Difference]: Without dead ends: 5493 [2020-04-18 19:12:04,942 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:12:05,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2020-04-18 19:12:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 4580. [2020-04-18 19:12:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4580 states. [2020-04-18 19:12:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 15166 transitions. [2020-04-18 19:12:05,184 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 15166 transitions. Word has length 38 [2020-04-18 19:12:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:05,184 INFO L479 AbstractCegarLoop]: Abstraction has 4580 states and 15166 transitions. [2020-04-18 19:12:05,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:12:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 15166 transitions. [2020-04-18 19:12:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:12:05,196 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:05,196 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:05,197 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:05,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1411644236, now seen corresponding path program 1 times [2020-04-18 19:12:05,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:05,198 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1060194749] [2020-04-18 19:12:05,199 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:05,203 INFO L259 McrAutomatonBuilder]: Finished intersection with 231 states and 516 transitions. [2020-04-18 19:12:05,205 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states. [2020-04-18 19:12:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:12:05,206 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:05,207 INFO L82 PathProgramCache]: Analyzing trace with hash 47374126, now seen corresponding path program 2 times [2020-04-18 19:12:05,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:05,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221816193] [2020-04-18 19:12:05,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:05,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221816193] [2020-04-18 19:12:05,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:05,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:12:05,347 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:05,352 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:05,367 INFO L259 McrAutomatonBuilder]: Finished intersection with 143 states and 284 transitions. [2020-04-18 19:12:05,368 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:05,420 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:12:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:12:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:12:05,421 INFO L87 Difference]: Start difference. First operand 231 states. Second operand 6 states. [2020-04-18 19:12:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:05,586 INFO L93 Difference]: Finished difference Result 300 states and 630 transitions. [2020-04-18 19:12:05,587 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 630 transitions. [2020-04-18 19:12:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:12:05,588 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:12:05,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:05,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1455781586, now seen corresponding path program 3 times [2020-04-18 19:12:05,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:05,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320132255] [2020-04-18 19:12:05,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:05,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320132255] [2020-04-18 19:12:05,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:05,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:05,746 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:05,749 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:05,765 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 274 transitions. [2020-04-18 19:12:05,765 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:05,797 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:12:05,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:12:05,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:12:05,798 INFO L87 Difference]: Start difference. First operand 300 states and 630 transitions. Second operand 8 states. [2020-04-18 19:12:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:06,016 INFO L93 Difference]: Finished difference Result 300 states and 630 transitions. [2020-04-18 19:12:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 630 transitions. [2020-04-18 19:12:06,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:06,017 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1060194749] [2020-04-18 19:12:06,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:06,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:12:06,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1060194749] [2020-04-18 19:12:06,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:12:06,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:06,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:12:06,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:12:06,019 INFO L87 Difference]: Start difference. First operand 4580 states and 15166 transitions. Second operand 8 states. [2020-04-18 19:12:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:06,129 INFO L93 Difference]: Finished difference Result 5980 states and 19436 transitions. [2020-04-18 19:12:06,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 19:12:06,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-04-18 19:12:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:06,155 INFO L225 Difference]: With dead ends: 5980 [2020-04-18 19:12:06,155 INFO L226 Difference]: Without dead ends: 4764 [2020-04-18 19:12:06,156 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:12:06,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2020-04-18 19:12:06,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 3896. [2020-04-18 19:12:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3896 states. [2020-04-18 19:12:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 12781 transitions. [2020-04-18 19:12:06,290 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 12781 transitions. Word has length 40 [2020-04-18 19:12:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:06,291 INFO L479 AbstractCegarLoop]: Abstraction has 3896 states and 12781 transitions. [2020-04-18 19:12:06,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:12:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 12781 transitions. [2020-04-18 19:12:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:12:06,301 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:06,302 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:06,302 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:06,302 INFO L82 PathProgramCache]: Analyzing trace with hash -427296066, now seen corresponding path program 1 times [2020-04-18 19:12:06,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:06,303 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1029238176] [2020-04-18 19:12:06,304 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:06,308 INFO L259 McrAutomatonBuilder]: Finished intersection with 187 states and 404 transitions. [2020-04-18 19:12:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states. [2020-04-18 19:12:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:12:06,310 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:06,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:06,310 INFO L82 PathProgramCache]: Analyzing trace with hash -427296066, now seen corresponding path program 2 times [2020-04-18 19:12:06,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:06,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619106688] [2020-04-18 19:12:06,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:06,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619106688] [2020-04-18 19:12:06,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:06,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:06,477 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:06,481 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:06,495 INFO L259 McrAutomatonBuilder]: Finished intersection with 121 states and 236 transitions. [2020-04-18 19:12:06,495 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:06,549 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 19:12:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:12:06,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:12:06,550 INFO L87 Difference]: Start difference. First operand 187 states. Second operand 8 states. [2020-04-18 19:12:06,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:06,599 INFO L93 Difference]: Finished difference Result 187 states and 404 transitions. [2020-04-18 19:12:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 404 transitions. [2020-04-18 19:12:06,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:06,600 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1029238176] [2020-04-18 19:12:06,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:06,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:12:06,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1029238176] [2020-04-18 19:12:06,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:12:06,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:12:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:12:06,602 INFO L87 Difference]: Start difference. First operand 3896 states and 12781 transitions. Second operand 8 states. [2020-04-18 19:12:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:06,885 INFO L93 Difference]: Finished difference Result 6201 states and 20087 transitions. [2020-04-18 19:12:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:12:06,885 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-04-18 19:12:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:06,901 INFO L225 Difference]: With dead ends: 6201 [2020-04-18 19:12:06,902 INFO L226 Difference]: Without dead ends: 5321 [2020-04-18 19:12:06,902 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:12:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5321 states. [2020-04-18 19:12:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5321 to 3656. [2020-04-18 19:12:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3656 states. [2020-04-18 19:12:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 11929 transitions. [2020-04-18 19:12:07,053 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 11929 transitions. Word has length 40 [2020-04-18 19:12:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:07,053 INFO L479 AbstractCegarLoop]: Abstraction has 3656 states and 11929 transitions. [2020-04-18 19:12:07,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:12:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 11929 transitions. [2020-04-18 19:12:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:12:07,062 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:07,062 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:07,063 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:07,063 INFO L82 PathProgramCache]: Analyzing trace with hash 730747382, now seen corresponding path program 1 times [2020-04-18 19:12:07,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:07,064 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [135396000] [2020-04-18 19:12:07,066 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:07,124 INFO L259 McrAutomatonBuilder]: Finished intersection with 255 states and 575 transitions. [2020-04-18 19:12:07,126 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2020-04-18 19:12:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:12:07,127 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:07,128 INFO L82 PathProgramCache]: Analyzing trace with hash 730747382, now seen corresponding path program 2 times [2020-04-18 19:12:07,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:07,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704257578] [2020-04-18 19:12:07,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:07,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704257578] [2020-04-18 19:12:07,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:07,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:12:07,250 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:07,255 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:07,272 INFO L259 McrAutomatonBuilder]: Finished intersection with 151 states and 301 transitions. [2020-04-18 19:12:07,272 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:07,330 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:12:07,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:12:07,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:12:07,333 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 8 states. [2020-04-18 19:12:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:07,480 INFO L93 Difference]: Finished difference Result 255 states and 575 transitions. [2020-04-18 19:12:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 575 transitions. [2020-04-18 19:12:07,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:07,481 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [135396000] [2020-04-18 19:12:07,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:07,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:12:07,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [135396000] [2020-04-18 19:12:07,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:12:07,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:07,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:12:07,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:12:07,483 INFO L87 Difference]: Start difference. First operand 3656 states and 11929 transitions. Second operand 8 states. [2020-04-18 19:12:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:07,555 INFO L93 Difference]: Finished difference Result 5264 states and 16991 transitions. [2020-04-18 19:12:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 19:12:07,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-04-18 19:12:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:07,566 INFO L225 Difference]: With dead ends: 5264 [2020-04-18 19:12:07,567 INFO L226 Difference]: Without dead ends: 2797 [2020-04-18 19:12:07,567 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:12:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2020-04-18 19:12:07,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2385. [2020-04-18 19:12:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2385 states. [2020-04-18 19:12:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 7573 transitions. [2020-04-18 19:12:07,633 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 7573 transitions. Word has length 41 [2020-04-18 19:12:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:07,633 INFO L479 AbstractCegarLoop]: Abstraction has 2385 states and 7573 transitions. [2020-04-18 19:12:07,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:12:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 7573 transitions. [2020-04-18 19:12:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:12:07,640 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:07,641 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:07,641 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1555771325, now seen corresponding path program 1 times [2020-04-18 19:12:07,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:07,642 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1615162706] [2020-04-18 19:12:07,644 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:07,657 INFO L259 McrAutomatonBuilder]: Finished intersection with 699 states and 2079 transitions. [2020-04-18 19:12:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states. [2020-04-18 19:12:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:12:07,665 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:07,665 INFO L82 PathProgramCache]: Analyzing trace with hash -336476045, now seen corresponding path program 2 times [2020-04-18 19:12:07,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:07,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968868005] [2020-04-18 19:12:07,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:07,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968868005] [2020-04-18 19:12:07,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:07,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:07,794 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:07,798 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:07,842 INFO L259 McrAutomatonBuilder]: Finished intersection with 226 states and 529 transitions. [2020-04-18 19:12:07,843 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:07,893 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:12:07,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:07,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:12:07,894 INFO L87 Difference]: Start difference. First operand 699 states. Second operand 7 states. [2020-04-18 19:12:08,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:08,221 INFO L93 Difference]: Finished difference Result 1051 states and 3033 transitions. [2020-04-18 19:12:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 3033 transitions. [2020-04-18 19:12:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:12:08,223 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:12:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:08,224 INFO L82 PathProgramCache]: Analyzing trace with hash 393526881, now seen corresponding path program 3 times [2020-04-18 19:12:08,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:08,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484249888] [2020-04-18 19:12:08,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:08,639 WARN L192 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-04-18 19:12:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:08,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484249888] [2020-04-18 19:12:08,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:08,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:08,659 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:08,663 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:08,695 INFO L259 McrAutomatonBuilder]: Finished intersection with 227 states and 531 transitions. [2020-04-18 19:12:08,696 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:08,722 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:12:08,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:08,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:12:08,723 INFO L87 Difference]: Start difference. First operand 1051 states and 3033 transitions. Second operand 7 states. [2020-04-18 19:12:08,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:08,929 INFO L93 Difference]: Finished difference Result 1233 states and 3332 transitions. [2020-04-18 19:12:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 3332 transitions. [2020-04-18 19:12:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:12:08,933 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:12:08,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:08,933 INFO L82 PathProgramCache]: Analyzing trace with hash -153459941, now seen corresponding path program 4 times [2020-04-18 19:12:08,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:08,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523073836] [2020-04-18 19:12:08,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:09,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523073836] [2020-04-18 19:12:09,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:09,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:09,008 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:09,011 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:09,040 INFO L259 McrAutomatonBuilder]: Finished intersection with 219 states and 504 transitions. [2020-04-18 19:12:09,041 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:09,064 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:12:09,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:09,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:12:09,065 INFO L87 Difference]: Start difference. First operand 1233 states and 3332 transitions. Second operand 7 states. [2020-04-18 19:12:09,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:09,277 INFO L93 Difference]: Finished difference Result 1407 states and 3618 transitions. [2020-04-18 19:12:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3618 transitions. [2020-04-18 19:12:09,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:12:09,280 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:12:09,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1645635783, now seen corresponding path program 5 times [2020-04-18 19:12:09,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:09,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122865793] [2020-04-18 19:12:09,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:09,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122865793] [2020-04-18 19:12:09,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:09,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:12:09,359 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:09,363 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:09,391 INFO L259 McrAutomatonBuilder]: Finished intersection with 208 states and 476 transitions. [2020-04-18 19:12:09,391 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:09,498 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:12:09,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:12:09,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2020-04-18 19:12:09,499 INFO L87 Difference]: Start difference. First operand 1407 states and 3618 transitions. Second operand 6 states. [2020-04-18 19:12:09,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:09,556 INFO L93 Difference]: Finished difference Result 1407 states and 3618 transitions. [2020-04-18 19:12:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 3618 transitions. [2020-04-18 19:12:09,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:09,559 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1615162706] [2020-04-18 19:12:09,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:09,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:12:09,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1615162706] [2020-04-18 19:12:09,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:12:09,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:09,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:12:09,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1214, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:12:09,561 INFO L87 Difference]: Start difference. First operand 2385 states and 7573 transitions. Second operand 14 states. [2020-04-18 19:12:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:10,843 INFO L93 Difference]: Finished difference Result 5482 states and 16972 transitions. [2020-04-18 19:12:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-04-18 19:12:10,843 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-04-18 19:12:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:10,846 INFO L225 Difference]: With dead ends: 5482 [2020-04-18 19:12:10,846 INFO L226 Difference]: Without dead ends: 1012 [2020-04-18 19:12:10,848 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=705, Invalid=4551, Unknown=0, NotChecked=0, Total=5256 [2020-04-18 19:12:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-04-18 19:12:10,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2020-04-18 19:12:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1012 states. [2020-04-18 19:12:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 3007 transitions. [2020-04-18 19:12:10,873 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 3007 transitions. Word has length 43 [2020-04-18 19:12:10,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:10,873 INFO L479 AbstractCegarLoop]: Abstraction has 1012 states and 3007 transitions. [2020-04-18 19:12:10,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:12:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 3007 transitions. [2020-04-18 19:12:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:12:10,875 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:10,875 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:10,876 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:10,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:10,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1395128952, now seen corresponding path program 1 times [2020-04-18 19:12:10,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:10,877 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1251919596] [2020-04-18 19:12:10,878 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:10,897 INFO L259 McrAutomatonBuilder]: Finished intersection with 867 states and 2632 transitions. [2020-04-18 19:12:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states. [2020-04-18 19:12:10,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:12:10,907 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:10,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:10,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1116629972, now seen corresponding path program 2 times [2020-04-18 19:12:10,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:10,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138850103] [2020-04-18 19:12:10,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:10,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:10,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138850103] [2020-04-18 19:12:10,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:10,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:10,998 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:11,003 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:11,027 INFO L259 McrAutomatonBuilder]: Finished intersection with 146 states and 285 transitions. [2020-04-18 19:12:11,027 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:11,071 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 19:12:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:12:11,072 INFO L87 Difference]: Start difference. First operand 867 states. Second operand 7 states. [2020-04-18 19:12:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:11,384 INFO L93 Difference]: Finished difference Result 1342 states and 3953 transitions. [2020-04-18 19:12:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 3953 transitions. [2020-04-18 19:12:11,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:12:11,388 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:12:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash -386627046, now seen corresponding path program 3 times [2020-04-18 19:12:11,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:11,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616396817] [2020-04-18 19:12:11,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:11,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616396817] [2020-04-18 19:12:11,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:11,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:11,500 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:11,504 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:11,521 INFO L259 McrAutomatonBuilder]: Finished intersection with 149 states and 292 transitions. [2020-04-18 19:12:11,522 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:11,545 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:12:11,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:11,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:12:11,545 INFO L87 Difference]: Start difference. First operand 1342 states and 3953 transitions. Second operand 7 states. [2020-04-18 19:12:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:11,759 INFO L93 Difference]: Finished difference Result 1643 states and 4547 transitions. [2020-04-18 19:12:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 4547 transitions. [2020-04-18 19:12:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:12:11,763 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:12:11,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:11,764 INFO L82 PathProgramCache]: Analyzing trace with hash -163349344, now seen corresponding path program 4 times [2020-04-18 19:12:11,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:11,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325885871] [2020-04-18 19:12:11,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:11,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325885871] [2020-04-18 19:12:11,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:11,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:11,844 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:11,849 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:11,879 INFO L259 McrAutomatonBuilder]: Finished intersection with 191 states and 412 transitions. [2020-04-18 19:12:11,879 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:11,904 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:12:11,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:11,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:12:11,906 INFO L87 Difference]: Start difference. First operand 1643 states and 4547 transitions. Second operand 7 states. [2020-04-18 19:12:12,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:12,158 INFO L93 Difference]: Finished difference Result 1991 states and 5293 transitions. [2020-04-18 19:12:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 5293 transitions. [2020-04-18 19:12:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:12:12,163 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:12:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:12,164 INFO L82 PathProgramCache]: Analyzing trace with hash -989091378, now seen corresponding path program 5 times [2020-04-18 19:12:12,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:12,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305052130] [2020-04-18 19:12:12,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:12,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305052130] [2020-04-18 19:12:12,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:12,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:12,264 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:12,268 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:12,295 INFO L259 McrAutomatonBuilder]: Finished intersection with 174 states and 365 transitions. [2020-04-18 19:12:12,295 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:12,443 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:12:12,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:12,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1079, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 19:12:12,445 INFO L87 Difference]: Start difference. First operand 1991 states and 5293 transitions. Second operand 7 states. [2020-04-18 19:12:12,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:12,565 INFO L93 Difference]: Finished difference Result 1991 states and 5293 transitions. [2020-04-18 19:12:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 5293 transitions. [2020-04-18 19:12:12,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:12,569 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1251919596] [2020-04-18 19:12:12,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:12,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:12:12,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1251919596] [2020-04-18 19:12:12,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:12:12,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:12,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:12:12,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1508, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 19:12:12,572 INFO L87 Difference]: Start difference. First operand 1012 states and 3007 transitions. Second operand 15 states. [2020-04-18 19:12:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:13,020 INFO L93 Difference]: Finished difference Result 904 states and 2587 transitions. [2020-04-18 19:12:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-04-18 19:12:13,021 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-04-18 19:12:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:13,024 INFO L225 Difference]: With dead ends: 904 [2020-04-18 19:12:13,024 INFO L226 Difference]: Without dead ends: 652 [2020-04-18 19:12:13,026 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=473, Invalid=2833, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 19:12:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-04-18 19:12:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 652. [2020-04-18 19:12:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-04-18 19:12:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1822 transitions. [2020-04-18 19:12:13,040 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1822 transitions. Word has length 44 [2020-04-18 19:12:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:13,041 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 1822 transitions. [2020-04-18 19:12:13,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:12:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1822 transitions. [2020-04-18 19:12:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:12:13,042 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:12:13,043 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:12:13,043 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:12:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:13,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1761307537, now seen corresponding path program 1 times [2020-04-18 19:12:13,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:12:13,044 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1369254300] [2020-04-18 19:12:13,045 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:13,065 INFO L259 McrAutomatonBuilder]: Finished intersection with 1062 states and 3293 transitions. [2020-04-18 19:12:13,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states. [2020-04-18 19:12:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:12:13,077 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:12:13,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:13,077 INFO L82 PathProgramCache]: Analyzing trace with hash 600761379, now seen corresponding path program 2 times [2020-04-18 19:12:13,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:13,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294662243] [2020-04-18 19:12:13,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:13,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294662243] [2020-04-18 19:12:13,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:13,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:13,174 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:13,178 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:13,199 INFO L259 McrAutomatonBuilder]: Finished intersection with 160 states and 313 transitions. [2020-04-18 19:12:13,199 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:13,236 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:12:13,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:13,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:12:13,237 INFO L87 Difference]: Start difference. First operand 1062 states. Second operand 7 states. [2020-04-18 19:12:13,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:13,468 INFO L93 Difference]: Finished difference Result 1342 states and 3935 transitions. [2020-04-18 19:12:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 3935 transitions. [2020-04-18 19:12:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:12:13,471 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:12:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:13,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1067564451, now seen corresponding path program 3 times [2020-04-18 19:12:13,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:13,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451634765] [2020-04-18 19:12:13,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:13,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451634765] [2020-04-18 19:12:13,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:13,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:13,551 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:13,555 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:13,582 INFO L259 McrAutomatonBuilder]: Finished intersection with 202 states and 433 transitions. [2020-04-18 19:12:13,582 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:13,607 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 19:12:13,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:12:13,608 INFO L87 Difference]: Start difference. First operand 1342 states and 3935 transitions. Second operand 7 states. [2020-04-18 19:12:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:13,878 INFO L93 Difference]: Finished difference Result 2038 states and 5591 transitions. [2020-04-18 19:12:13,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 5591 transitions. [2020-04-18 19:12:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:12:13,883 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:12:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:12:13,883 INFO L82 PathProgramCache]: Analyzing trace with hash -299324393, now seen corresponding path program 4 times [2020-04-18 19:12:13,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:12:13,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898898684] [2020-04-18 19:12:13,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:12:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:12:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:12:13,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898898684] [2020-04-18 19:12:13,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:12:13,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:12:13,980 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:12:13,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:12:14,020 INFO L259 McrAutomatonBuilder]: Finished intersection with 195 states and 414 transitions. [2020-04-18 19:12:14,020 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:12:14,138 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:12:14,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:12:14,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:12:14,140 INFO L87 Difference]: Start difference. First operand 2038 states and 5591 transitions. Second operand 7 states. [2020-04-18 19:12:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:14,414 INFO L93 Difference]: Finished difference Result 2038 states and 5591 transitions. [2020-04-18 19:12:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 5591 transitions. [2020-04-18 19:12:14,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:14,419 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1369254300] [2020-04-18 19:12:14,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:12:14,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:12:14,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1369254300] [2020-04-18 19:12:14,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-04-18 19:12:14,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:12:14,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-04-18 19:12:14,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1400, Unknown=0, NotChecked=0, Total=1640 [2020-04-18 19:12:14,421 INFO L87 Difference]: Start difference. First operand 652 states and 1822 transitions. Second operand 14 states. [2020-04-18 19:12:14,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:12:14,672 INFO L93 Difference]: Finished difference Result 355 states and 931 transitions. [2020-04-18 19:12:14,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 19:12:14,672 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2020-04-18 19:12:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:12:14,673 INFO L225 Difference]: With dead ends: 355 [2020-04-18 19:12:14,673 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:12:14,674 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=321, Invalid=2129, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:12:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:12:14,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:12:14,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:12:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:12:14,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-04-18 19:12:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:12:14,676 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:12:14,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-04-18 19:12:14,676 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:12:14,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:12:14,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:12:14 BasicIcfg [2020-04-18 19:12:14,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:12:14,682 INFO L168 Benchmark]: Toolchain (without parser) took 15061.42 ms. Allocated memory was 138.9 MB in the beginning and 654.3 MB in the end (delta: 515.4 MB). Free memory was 101.5 MB in the beginning and 508.3 MB in the end (delta: -406.8 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. [2020-04-18 19:12:14,683 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 19:12:14,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.53 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 159.5 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:12:14,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.46 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:12:14,685 INFO L168 Benchmark]: Boogie Preprocessor took 26.39 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:12:14,685 INFO L168 Benchmark]: RCFGBuilder took 462.71 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 134.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:12:14,686 INFO L168 Benchmark]: TraceAbstraction took 13829.23 ms. Allocated memory was 202.9 MB in the beginning and 654.3 MB in the end (delta: 451.4 MB). Free memory was 133.5 MB in the beginning and 508.3 MB in the end (delta: -374.8 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:12:14,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.53 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 159.5 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.46 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.39 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 155.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.71 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 134.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13829.23 ms. Allocated memory was 202.9 MB in the beginning and 654.3 MB in the end (delta: 451.4 MB). Free memory was 133.5 MB in the beginning and 508.3 MB in the end (delta: -374.8 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 952 SDtfs, 1921 SDslu, 4861 SDs, 0 SdLazy, 1071 SolverSat, 198 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1166 GetRequests, 909 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3783 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8471occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 6111 StatesRemovedByMinimization, 6 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...