/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:41:52,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:41:52,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:41:52,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:41:52,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:41:52,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:41:52,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:41:52,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:41:52,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:41:52,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:41:52,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:41:52,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:41:52,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:41:52,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:41:52,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:41:52,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:41:52,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:41:52,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:41:52,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:41:52,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:41:52,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:41:52,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:41:52,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:41:52,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:41:52,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:41:52,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:41:52,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:41:52,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:41:52,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:41:52,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:41:52,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:41:52,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:41:52,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:41:52,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:41:52,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:41:52,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:41:52,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:41:52,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:41:52,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:41:52,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:41:52,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:41:52,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:41:52,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:41:52,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:41:52,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:41:52,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:41:52,214 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:41:52,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:41:52,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:41:52,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:41:52,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:41:52,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:41:52,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:41:52,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:41:52,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:41:52,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:41:52,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:41:52,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:41:52,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:41:52,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:41:52,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:41:52,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:41:52,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:41:52,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:41:52,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:41:52,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:41:52,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:41:52,218 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:41:52,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:41:52,218 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:41:52,219 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:41:52,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:41:52,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:41:52,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:41:52,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:41:52,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:41:52,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:41:52,560 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:41:52,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-04-18 15:41:52,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4f67461/f21949a9db1b41379a3fafdbf8b4e55e/FLAG1314aff8f [2020-04-18 15:41:53,194 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:41:53,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-04-18 15:41:53,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4f67461/f21949a9db1b41379a3fafdbf8b4e55e/FLAG1314aff8f [2020-04-18 15:41:53,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4f67461/f21949a9db1b41379a3fafdbf8b4e55e [2020-04-18 15:41:53,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:41:53,476 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:41:53,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:41:53,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:41:53,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:41:53,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:41:53" (1/1) ... [2020-04-18 15:41:53,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694972d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:53, skipping insertion in model container [2020-04-18 15:41:53,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:41:53" (1/1) ... [2020-04-18 15:41:53,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:41:53,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:41:54,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:41:54,122 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:41:54,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:41:54,265 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:41:54,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54 WrapperNode [2020-04-18 15:41:54,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:41:54,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:41:54,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:41:54,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:41:54,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:41:54,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:41:54,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:41:54,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:41:54,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... [2020-04-18 15:41:54,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:41:54,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:41:54,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:41:54,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:41:54,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:41:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:41:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:41:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:41:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:41:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:41:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:41:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:41:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:41:54,416 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:41:54,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:41:54,824 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:41:54,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:41:54 BoogieIcfgContainer [2020-04-18 15:41:54,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:41:54,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:41:54,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:41:54,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:41:54,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:41:53" (1/3) ... [2020-04-18 15:41:54,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348d4c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:41:54, skipping insertion in model container [2020-04-18 15:41:54,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:41:54" (2/3) ... [2020-04-18 15:41:54,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348d4c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:41:54, skipping insertion in model container [2020-04-18 15:41:54,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:41:54" (3/3) ... [2020-04-18 15:41:54,841 INFO L109 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-04-18 15:41:54,851 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:41:54,852 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:41:54,859 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:41:54,860 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:41:54,882 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,883 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,883 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,883 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,884 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,884 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,884 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,885 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,885 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,885 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,886 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,886 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,890 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,890 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,891 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,891 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,896 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,896 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,897 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,897 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:41:54,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 15:41:54,927 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:41:54,927 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:41:54,928 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:41:54,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:41:54,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:41:54,928 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:41:54,928 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:41:54,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:41:54,944 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 55 transitions, 120 flow [2020-04-18 15:41:54,946 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 15:41:54,988 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 15:41:54,988 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:41:54,993 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 15:41:54,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-04-18 15:41:55,015 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-04-18 15:41:55,015 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:41:55,016 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-04-18 15:41:55,018 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 672 [2020-04-18 15:41:55,020 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:41:56,351 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1209 [2020-04-18 15:41:56,351 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-04-18 15:41:56,355 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2020-04-18 15:41:56,368 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 74 states. [2020-04-18 15:41:56,370 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-04-18 15:41:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 15:41:56,377 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:41:56,378 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-04-18 15:41:56,378 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:41:56,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:56,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1785955775, now seen corresponding path program 1 times [2020-04-18 15:41:56,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:41:56,393 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [719597108] [2020-04-18 15:41:56,411 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:56,422 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 15:41:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-04-18 15:41:56,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-04-18 15:41:56,425 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:41:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1785955775, now seen corresponding path program 2 times [2020-04-18 15:41:56,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:56,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575698736] [2020-04-18 15:41:56,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:56,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575698736] [2020-04-18 15:41:56,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:56,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:41:56,638 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:56,639 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:56,641 INFO L259 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-04-18 15:41:56,641 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:56,650 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:41:56,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:41:56,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:41:56,657 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-04-18 15:41:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:56,661 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2020-04-18 15:41:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2020-04-18 15:41:56,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:41:56,662 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [719597108] [2020-04-18 15:41:56,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:41:56,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:41:56,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [719597108] [2020-04-18 15:41:56,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:41:56,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:41:56,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:41:56,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:41:56,671 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-04-18 15:41:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:56,693 INFO L93 Difference]: Finished difference Result 72 states and 154 transitions. [2020-04-18 15:41:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:41:56,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-04-18 15:41:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:41:56,706 INFO L225 Difference]: With dead ends: 72 [2020-04-18 15:41:56,706 INFO L226 Difference]: Without dead ends: 56 [2020-04-18 15:41:56,708 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:41:56,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-04-18 15:41:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-04-18 15:41:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-04-18 15:41:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 114 transitions. [2020-04-18 15:41:56,753 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 114 transitions. Word has length 6 [2020-04-18 15:41:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:41:56,754 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 114 transitions. [2020-04-18 15:41:56,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:41:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 114 transitions. [2020-04-18 15:41:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:41:56,755 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:41:56,755 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:41:56,756 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:41:56,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:56,756 INFO L82 PathProgramCache]: Analyzing trace with hash -469946389, now seen corresponding path program 1 times [2020-04-18 15:41:56,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:41:56,769 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [769771203] [2020-04-18 15:41:56,770 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:56,771 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 15 transitions. [2020-04-18 15:41:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:41:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:41:56,772 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:41:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:56,773 INFO L82 PathProgramCache]: Analyzing trace with hash -469945669, now seen corresponding path program 2 times [2020-04-18 15:41:56,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:56,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993946820] [2020-04-18 15:41:56,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:56,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993946820] [2020-04-18 15:41:56,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:56,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:41:56,855 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:56,855 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:56,859 INFO L259 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-04-18 15:41:56,859 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:56,865 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:41:56,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:41:56,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:41:56,867 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:41:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:56,873 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 15:41:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 15:41:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-04-18 15:41:56,874 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:41:56,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:56,875 INFO L82 PathProgramCache]: Analyzing trace with hash -469946389, now seen corresponding path program 3 times [2020-04-18 15:41:56,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:56,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883910930] [2020-04-18 15:41:56,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:56,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883910930] [2020-04-18 15:41:56,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:56,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:41:56,995 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:56,995 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:56,997 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 13 transitions. [2020-04-18 15:41:56,998 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:57,012 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:41:57,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:41:57,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:41:57,013 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 4 states. [2020-04-18 15:41:57,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,027 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-04-18 15:41:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-04-18 15:41:57,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:41:57,029 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [769771203] [2020-04-18 15:41:57,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:41:57,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:41:57,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [769771203] [2020-04-18 15:41:57,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:41:57,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:41:57,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:41:57,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:41:57,031 INFO L87 Difference]: Start difference. First operand 56 states and 114 transitions. Second operand 5 states. [2020-04-18 15:41:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,103 INFO L93 Difference]: Finished difference Result 56 states and 99 transitions. [2020-04-18 15:41:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:41:57,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-04-18 15:41:57,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:41:57,105 INFO L225 Difference]: With dead ends: 56 [2020-04-18 15:41:57,105 INFO L226 Difference]: Without dead ends: 40 [2020-04-18 15:41:57,106 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:41:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-04-18 15:41:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-04-18 15:41:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-04-18 15:41:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-04-18 15:41:57,113 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 7 [2020-04-18 15:41:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:41:57,113 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-04-18 15:41:57,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:41:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-04-18 15:41:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:41:57,115 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:41:57,115 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:41:57,115 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:41:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash -658099301, now seen corresponding path program 1 times [2020-04-18 15:41:57,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:41:57,116 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [726626333] [2020-04-18 15:41:57,116 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,117 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 33 transitions. [2020-04-18 15:41:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 15:41:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:41:57,118 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:41:57,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,119 INFO L82 PathProgramCache]: Analyzing trace with hash -646217951, now seen corresponding path program 2 times [2020-04-18 15:41:57,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:57,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931534586] [2020-04-18 15:41:57,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:57,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931534586] [2020-04-18 15:41:57,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:57,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:41:57,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:57,193 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,194 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:41:57,194 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:57,197 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:41:57,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:41:57,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:41:57,198 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-04-18 15:41:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,201 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2020-04-18 15:41:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-04-18 15:41:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:41:57,202 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:41:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,202 INFO L82 PathProgramCache]: Analyzing trace with hash -646909871, now seen corresponding path program 3 times [2020-04-18 15:41:57,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:57,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527227676] [2020-04-18 15:41:57,203 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:57,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527227676] [2020-04-18 15:41:57,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:57,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:41:57,298 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:57,298 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,300 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-04-18 15:41:57,300 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:57,316 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:41:57,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:41:57,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:41:57,317 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-04-18 15:41:57,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,334 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2020-04-18 15:41:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-04-18 15:41:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:41:57,335 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:41:57,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,335 INFO L82 PathProgramCache]: Analyzing trace with hash -658099301, now seen corresponding path program 4 times [2020-04-18 15:41:57,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:57,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345223359] [2020-04-18 15:41:57,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:57,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345223359] [2020-04-18 15:41:57,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:57,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:41:57,387 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:57,388 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,389 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 15:41:57,389 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:57,436 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:41:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:41:57,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:41:57,437 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand 6 states. [2020-04-18 15:41:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,460 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2020-04-18 15:41:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-04-18 15:41:57,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:41:57,461 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [726626333] [2020-04-18 15:41:57,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:41:57,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:41:57,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [726626333] [2020-04-18 15:41:57,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:41:57,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:41:57,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:41:57,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:41:57,463 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 7 states. [2020-04-18 15:41:57,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,523 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2020-04-18 15:41:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 15:41:57,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-04-18 15:41:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:41:57,529 INFO L225 Difference]: With dead ends: 35 [2020-04-18 15:41:57,529 INFO L226 Difference]: Without dead ends: 28 [2020-04-18 15:41:57,530 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:41:57,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-04-18 15:41:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-04-18 15:41:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-04-18 15:41:57,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2020-04-18 15:41:57,535 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 9 [2020-04-18 15:41:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:41:57,535 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2020-04-18 15:41:57,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:41:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-04-18 15:41:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:41:57,538 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:41:57,538 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:41:57,538 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:41:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,539 INFO L82 PathProgramCache]: Analyzing trace with hash 967414389, now seen corresponding path program 1 times [2020-04-18 15:41:57,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:41:57,539 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1627889145] [2020-04-18 15:41:57,540 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,541 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 120 transitions. [2020-04-18 15:41:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-04-18 15:41:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:41:57,545 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:41:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1435520459, now seen corresponding path program 2 times [2020-04-18 15:41:57,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:57,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138360949] [2020-04-18 15:41:57,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:57,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138360949] [2020-04-18 15:41:57,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:57,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:41:57,607 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:57,609 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,610 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-04-18 15:41:57,610 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:57,620 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:41:57,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:41:57,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:41:57,621 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2020-04-18 15:41:57,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,628 INFO L93 Difference]: Finished difference Result 72 states and 140 transitions. [2020-04-18 15:41:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 140 transitions. [2020-04-18 15:41:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:41:57,630 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:41:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,631 INFO L82 PathProgramCache]: Analyzing trace with hash -573672699, now seen corresponding path program 3 times [2020-04-18 15:41:57,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:57,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989045595] [2020-04-18 15:41:57,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:57,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989045595] [2020-04-18 15:41:57,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:57,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:41:57,672 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:57,673 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,675 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-04-18 15:41:57,675 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:57,690 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:41:57,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:41:57,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:41:57,691 INFO L87 Difference]: Start difference. First operand 72 states and 140 transitions. Second operand 4 states. [2020-04-18 15:41:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,723 INFO L93 Difference]: Finished difference Result 86 states and 159 transitions. [2020-04-18 15:41:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 159 transitions. [2020-04-18 15:41:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:41:57,724 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:41:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,724 INFO L82 PathProgramCache]: Analyzing trace with hash 967421499, now seen corresponding path program 4 times [2020-04-18 15:41:57,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:57,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524700450] [2020-04-18 15:41:57,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:57,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524700450] [2020-04-18 15:41:57,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:57,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:41:57,756 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:57,757 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,759 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 22 transitions. [2020-04-18 15:41:57,759 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:57,780 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:41:57,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:41:57,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-04-18 15:41:57,781 INFO L87 Difference]: Start difference. First operand 86 states and 159 transitions. Second operand 3 states. [2020-04-18 15:41:57,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:57,799 INFO L93 Difference]: Finished difference Result 126 states and 217 transitions. [2020-04-18 15:41:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 217 transitions. [2020-04-18 15:41:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:41:57,800 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:41:57,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:57,801 INFO L82 PathProgramCache]: Analyzing trace with hash 996865899, now seen corresponding path program 5 times [2020-04-18 15:41:57,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:57,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142299159] [2020-04-18 15:41:57,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:57,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142299159] [2020-04-18 15:41:57,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:57,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:41:57,896 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:57,897 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:57,900 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-04-18 15:41:57,900 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:57,951 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:41:57,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:41:57,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:41:57,952 INFO L87 Difference]: Start difference. First operand 126 states and 217 transitions. Second operand 6 states. [2020-04-18 15:41:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:58,012 INFO L93 Difference]: Finished difference Result 130 states and 219 transitions. [2020-04-18 15:41:58,012 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 219 transitions. [2020-04-18 15:41:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:41:58,013 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:41:58,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:41:58,013 INFO L82 PathProgramCache]: Analyzing trace with hash -129480839, now seen corresponding path program 6 times [2020-04-18 15:41:58,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:41:58,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905015429] [2020-04-18 15:41:58,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:41:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:41:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:41:58,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905015429] [2020-04-18 15:41:58,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:41:58,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:41:58,044 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:41:58,044 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:41:58,047 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 24 transitions. [2020-04-18 15:41:58,047 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:41:58,070 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:41:58,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:41:58,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:41:58,071 INFO L87 Difference]: Start difference. First operand 130 states and 219 transitions. Second operand 4 states. [2020-04-18 15:41:58,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:58,093 INFO L93 Difference]: Finished difference Result 188 states and 292 transitions. [2020-04-18 15:41:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 292 transitions. [2020-04-18 15:41:58,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:41:58,094 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1627889145] [2020-04-18 15:41:58,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:41:58,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:41:58,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1627889145] [2020-04-18 15:41:58,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-04-18 15:41:58,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:41:58,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 15:41:58,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:41:58,096 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand 10 states. [2020-04-18 15:41:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:41:58,347 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-04-18 15:41:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-04-18 15:41:58,348 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-04-18 15:41:58,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:41:58,348 INFO L225 Difference]: With dead ends: 41 [2020-04-18 15:41:58,348 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:41:58,349 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:41:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:41:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:41:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:41:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:41:58,350 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-04-18 15:41:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:41:58,351 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:41:58,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-04-18 15:41:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:41:58,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:41:58,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:41:58 BasicIcfg [2020-04-18 15:41:58,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:41:58,359 INFO L168 Benchmark]: Toolchain (without parser) took 4896.96 ms. Allocated memory was 136.8 MB in the beginning and 249.6 MB in the end (delta: 112.7 MB). Free memory was 100.6 MB in the beginning and 196.3 MB in the end (delta: -95.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:41:58,360 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 15:41:58,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.62 ms. Allocated memory was 136.8 MB in the beginning and 202.9 MB in the end (delta: 66.1 MB). Free memory was 98.6 MB in the beginning and 160.5 MB in the end (delta: -61.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:41:58,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.61 ms. Allocated memory is still 202.9 MB. Free memory was 160.5 MB in the beginning and 158.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 15:41:58,368 INFO L168 Benchmark]: Boogie Preprocessor took 25.50 ms. Allocated memory is still 202.9 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:41:58,374 INFO L168 Benchmark]: RCFGBuilder took 479.81 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 136.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:41:58,374 INFO L168 Benchmark]: TraceAbstraction took 3526.15 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 136.9 MB in the beginning and 196.3 MB in the end (delta: -59.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 15:41:58,383 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.62 ms. Allocated memory was 136.8 MB in the beginning and 202.9 MB in the end (delta: 66.1 MB). Free memory was 98.6 MB in the beginning and 160.5 MB in the end (delta: -61.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 56.61 ms. Allocated memory is still 202.9 MB. Free memory was 160.5 MB in the beginning and 158.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.50 ms. Allocated memory is still 202.9 MB. Free memory was 158.4 MB in the beginning and 157.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.81 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 136.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3526.15 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 136.9 MB in the beginning and 196.3 MB in the end (delta: -59.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 60 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 672 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 364 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1209 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 51 SDtfs, 87 SDslu, 99 SDs, 0 SdLazy, 129 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...