/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/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:32:07,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:32:07,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:32:07,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:32:07,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:32:07,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:32:07,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:32:07,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:32:07,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:32:07,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:32:07,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:32:07,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:32:07,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:32:07,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:32:07,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:32:07,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:32:07,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:32:07,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:32:07,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:32:07,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:32:07,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:32:07,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:32:07,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:32:07,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:32:07,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:32:07,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:32:07,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:32:07,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:32:07,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:32:07,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:32:07,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:32:07,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:32:07,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:32:07,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:32:07,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:32:07,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:32:07,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:32:07,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:32:07,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:32:07,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:32:07,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:32:07,175 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 19:32:07,197 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:32:07,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:32:07,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:32:07,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:32:07,200 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:32:07,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:32:07,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:32:07,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:32:07,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:32:07,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:32:07,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:32:07,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:32:07,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:32:07,203 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:32:07,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:32:07,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:32:07,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:32:07,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:32:07,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:32:07,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:32:07,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:32:07,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:32:07,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:32:07,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:32:07,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:32:07,205 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:32:07,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:32:07,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:32:07,206 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:32:07,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:32:07,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:32:07,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:32:07,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:32:07,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:32:07,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:32:07,526 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:32:07,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-04-18 19:32:07,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3729ca87d/6b68bd7c9d574ac79ecf44423e5d526e/FLAGc992ca2d6 [2020-04-18 19:32:08,164 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:32:08,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2020-04-18 19:32:08,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3729ca87d/6b68bd7c9d574ac79ecf44423e5d526e/FLAGc992ca2d6 [2020-04-18 19:32:08,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3729ca87d/6b68bd7c9d574ac79ecf44423e5d526e [2020-04-18 19:32:08,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:32:08,463 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:32:08,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:32:08,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:32:08,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:32:08,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:32:08" (1/1) ... [2020-04-18 19:32:08,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:08, skipping insertion in model container [2020-04-18 19:32:08,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:32:08" (1/1) ... [2020-04-18 19:32:08,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:32:08,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:32:09,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:32:09,081 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:32:09,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:32:09,237 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:32:09,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09 WrapperNode [2020-04-18 19:32:09,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:32:09,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:32:09,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:32:09,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:32:09,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:32:09,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:32:09,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:32:09,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:32:09,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (1/1) ... [2020-04-18 19:32:09,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:32:09,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:32:09,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:32:09,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:32:09,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (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 19:32:09,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:32:09,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:32:09,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:32:09,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:32:09,404 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:32:09,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:32:09,405 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:32:09,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:32:09,406 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:32:09,406 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:32:09,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:32:09,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:32:09,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:32:09,408 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 19:32:09,798 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:32:09,798 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:32:09,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:32:09 BoogieIcfgContainer [2020-04-18 19:32:09,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:32:09,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:32:09,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:32:09,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:32:09,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:32:08" (1/3) ... [2020-04-18 19:32:09,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b72793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:32:09, skipping insertion in model container [2020-04-18 19:32:09,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:32:09" (2/3) ... [2020-04-18 19:32:09,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b72793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:32:09, skipping insertion in model container [2020-04-18 19:32:09,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:32:09" (3/3) ... [2020-04-18 19:32:09,813 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2020-04-18 19:32:09,824 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:32:09,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:32:09,832 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:32:09,833 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:32:09,861 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,862 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,862 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,862 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,863 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,864 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,864 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,864 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,864 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,865 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,865 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,866 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,866 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,866 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,866 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,867 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,867 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,872 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,872 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,872 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,873 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,879 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,879 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,879 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,880 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,884 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,885 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,885 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,885 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:32:09,912 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:32:09,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:32:09,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:32:09,933 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:32:09,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:32:09,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:32:09,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:32:09,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:32:09,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:32:09,948 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 19:32:10,505 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 8472 states. [2020-04-18 19:32:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 8472 states. [2020-04-18 19:32:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:32:10,538 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:10,539 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] [2020-04-18 19:32:10,540 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:10,546 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-04-18 19:32:10,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:10,554 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [276270592] [2020-04-18 19:32:10,570 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:10,586 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:32:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 19:32:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-04-18 19:32:10,589 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:10,590 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 2 times [2020-04-18 19:32:10,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:10,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578255922] [2020-04-18 19:32:10,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:11,112 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 19:32:11,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578255922] [2020-04-18 19:32:11,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:11,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:11,116 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:11,121 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:11,128 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2020-04-18 19:32:11,129 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:11,200 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:32:11,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:11,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:32:11,207 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2020-04-18 19:32:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:11,327 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2020-04-18 19:32:11,327 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2020-04-18 19:32:11,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:11,328 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [276270592] [2020-04-18 19:32:11,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:11,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:11,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [276270592] [2020-04-18 19:32:11,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:32:11,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:11,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:11,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:32:11,337 INFO L87 Difference]: Start difference. First operand 8472 states. Second operand 7 states. [2020-04-18 19:32:11,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:11,850 INFO L93 Difference]: Finished difference Result 18576 states and 63960 transitions. [2020-04-18 19:32:11,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:32:11,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-04-18 19:32:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:11,925 INFO L225 Difference]: With dead ends: 18576 [2020-04-18 19:32:11,926 INFO L226 Difference]: Without dead ends: 5946 [2020-04-18 19:32:11,928 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 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 19:32:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5946 states. [2020-04-18 19:32:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5946 to 4872. [2020-04-18 19:32:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4872 states. [2020-04-18 19:32:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 16371 transitions. [2020-04-18 19:32:12,338 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 16371 transitions. Word has length 36 [2020-04-18 19:32:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:12,341 INFO L479 AbstractCegarLoop]: Abstraction has 4872 states and 16371 transitions. [2020-04-18 19:32:12,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:32:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 16371 transitions. [2020-04-18 19:32:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:32:12,360 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:12,368 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 19:32:12,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:12,369 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 1 times [2020-04-18 19:32:12,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:12,370 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [795352861] [2020-04-18 19:32:12,372 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:12,376 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 118 transitions. [2020-04-18 19:32:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-04-18 19:32:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 19:32:12,382 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash 57831617, now seen corresponding path program 2 times [2020-04-18 19:32:12,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:12,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822183838] [2020-04-18 19:32:12,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:12,656 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 19:32:12,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822183838] [2020-04-18 19:32:12,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:12,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:12,658 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:12,663 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:12,677 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 94 transitions. [2020-04-18 19:32:12,677 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:12,738 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:32:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:32:12,739 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 7 states. [2020-04-18 19:32:12,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:12,928 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2020-04-18 19:32:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-04-18 19:32:12,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:12,929 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [795352861] [2020-04-18 19:32:12,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:12,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:12,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [795352861] [2020-04-18 19:32:12,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:32:12,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:12,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:12,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:32:12,931 INFO L87 Difference]: Start difference. First operand 4872 states and 16371 transitions. Second operand 7 states. [2020-04-18 19:32:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:13,257 INFO L93 Difference]: Finished difference Result 6842 states and 22637 transitions. [2020-04-18 19:32:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:32:13,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-04-18 19:32:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:13,300 INFO L225 Difference]: With dead ends: 6842 [2020-04-18 19:32:13,300 INFO L226 Difference]: Without dead ends: 5314 [2020-04-18 19:32:13,303 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 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 19:32:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2020-04-18 19:32:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 4172. [2020-04-18 19:32:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4172 states. [2020-04-18 19:32:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 13897 transitions. [2020-04-18 19:32:13,469 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 13897 transitions. Word has length 38 [2020-04-18 19:32:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:13,470 INFO L479 AbstractCegarLoop]: Abstraction has 4172 states and 13897 transitions. [2020-04-18 19:32:13,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:32:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 13897 transitions. [2020-04-18 19:32:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:32:13,480 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:13,481 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 19:32:13,481 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:13,481 INFO L82 PathProgramCache]: Analyzing trace with hash 795573810, now seen corresponding path program 1 times [2020-04-18 19:32:13,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:13,482 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1890886685] [2020-04-18 19:32:13,483 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:13,487 INFO L259 McrAutomatonBuilder]: Finished intersection with 181 states and 384 transitions. [2020-04-18 19:32:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-04-18 19:32:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:32:13,490 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:13,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1317030912, now seen corresponding path program 2 times [2020-04-18 19:32:13,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:13,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449441700] [2020-04-18 19:32:13,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:32:13,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449441700] [2020-04-18 19:32:13,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:13,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:32:13,678 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:13,683 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:13,698 INFO L259 McrAutomatonBuilder]: Finished intersection with 133 states and 264 transitions. [2020-04-18 19:32:13,698 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:13,911 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-04-18 19:32:14,061 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:32:14,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:14,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:32:14,062 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 9 states. [2020-04-18 19:32:14,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:14,272 INFO L93 Difference]: Finished difference Result 181 states and 384 transitions. [2020-04-18 19:32:14,272 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 384 transitions. [2020-04-18 19:32:14,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:14,274 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1890886685] [2020-04-18 19:32:14,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:14,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:32:14,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1890886685] [2020-04-18 19:32:14,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 19:32:14,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:14,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:14,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:32:14,276 INFO L87 Difference]: Start difference. First operand 4172 states and 13897 transitions. Second operand 9 states. [2020-04-18 19:32:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:14,631 INFO L93 Difference]: Finished difference Result 7801 states and 25616 transitions. [2020-04-18 19:32:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:32:14,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-04-18 19:32:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:14,669 INFO L225 Difference]: With dead ends: 7801 [2020-04-18 19:32:14,670 INFO L226 Difference]: Without dead ends: 6217 [2020-04-18 19:32:14,670 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:32:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6217 states. [2020-04-18 19:32:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6217 to 4164. [2020-04-18 19:32:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4164 states. [2020-04-18 19:32:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 13867 transitions. [2020-04-18 19:32:14,861 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 13867 transitions. Word has length 40 [2020-04-18 19:32:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:14,861 INFO L479 AbstractCegarLoop]: Abstraction has 4164 states and 13867 transitions. [2020-04-18 19:32:14,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 19:32:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 13867 transitions. [2020-04-18 19:32:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:32:14,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:14,938 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 19:32:14,938 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:14,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1538988574, now seen corresponding path program 1 times [2020-04-18 19:32:14,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:14,939 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1934183798] [2020-04-18 19:32:14,942 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:14,946 INFO L259 McrAutomatonBuilder]: Finished intersection with 232 states and 517 transitions. [2020-04-18 19:32:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states. [2020-04-18 19:32:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:32:14,949 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:14,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:14,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1538988574, now seen corresponding path program 2 times [2020-04-18 19:32:14,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:14,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280808579] [2020-04-18 19:32:14,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:15,128 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 19:32:15,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280808579] [2020-04-18 19:32:15,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:15,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:15,130 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:15,134 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:15,152 INFO L259 McrAutomatonBuilder]: Finished intersection with 166 states and 349 transitions. [2020-04-18 19:32:15,152 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:15,289 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 9 times. [2020-04-18 19:32:15,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:15,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:32:15,290 INFO L87 Difference]: Start difference. First operand 232 states. Second operand 11 states. [2020-04-18 19:32:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:15,404 INFO L93 Difference]: Finished difference Result 232 states and 517 transitions. [2020-04-18 19:32:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 517 transitions. [2020-04-18 19:32:15,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:15,405 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1934183798] [2020-04-18 19:32:15,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:15,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:32:15,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1934183798] [2020-04-18 19:32:15,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-04-18 19:32:15,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:15,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:15,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:32:15,407 INFO L87 Difference]: Start difference. First operand 4164 states and 13867 transitions. Second operand 11 states. [2020-04-18 19:32:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:15,715 INFO L93 Difference]: Finished difference Result 6510 states and 21304 transitions. [2020-04-18 19:32:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 19:32:15,716 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-04-18 19:32:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:15,726 INFO L225 Difference]: With dead ends: 6510 [2020-04-18 19:32:15,727 INFO L226 Difference]: Without dead ends: 2828 [2020-04-18 19:32:15,727 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-04-18 19:32:15,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2020-04-18 19:32:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2430. [2020-04-18 19:32:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2430 states. [2020-04-18 19:32:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 7847 transitions. [2020-04-18 19:32:15,799 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 7847 transitions. Word has length 41 [2020-04-18 19:32:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:15,799 INFO L479 AbstractCegarLoop]: Abstraction has 2430 states and 7847 transitions. [2020-04-18 19:32:15,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-04-18 19:32:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 7847 transitions. [2020-04-18 19:32:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:15,805 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:15,805 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 19:32:15,805 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:15,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1429253103, now seen corresponding path program 1 times [2020-04-18 19:32:15,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:15,806 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [32524504] [2020-04-18 19:32:15,807 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:15,818 INFO L259 McrAutomatonBuilder]: Finished intersection with 532 states and 1527 transitions. [2020-04-18 19:32:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states. [2020-04-18 19:32:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:15,823 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:15,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:15,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1861919001, now seen corresponding path program 2 times [2020-04-18 19:32:15,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:15,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002936295] [2020-04-18 19:32:15,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:15,924 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 19:32:15,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002936295] [2020-04-18 19:32:15,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:15,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:32:15,926 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:15,932 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:16,315 INFO L259 McrAutomatonBuilder]: Finished intersection with 214 states and 499 transitions. [2020-04-18 19:32:16,315 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:16,480 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:32:16,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:32:16,481 INFO L87 Difference]: Start difference. First operand 532 states. Second operand 9 states. [2020-04-18 19:32:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:16,927 INFO L93 Difference]: Finished difference Result 793 states and 2112 transitions. [2020-04-18 19:32:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2112 transitions. [2020-04-18 19:32:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:16,931 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:16,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1810438991, now seen corresponding path program 3 times [2020-04-18 19:32:16,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:16,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892522008] [2020-04-18 19:32:16,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:17,055 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 19:32:17,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892522008] [2020-04-18 19:32:17,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:17,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:17,056 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:17,061 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:17,096 INFO L259 McrAutomatonBuilder]: Finished intersection with 230 states and 543 transitions. [2020-04-18 19:32:17,096 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:17,344 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 22 times. [2020-04-18 19:32:17,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:32:17,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:32:17,345 INFO L87 Difference]: Start difference. First operand 793 states and 2112 transitions. Second operand 17 states. [2020-04-18 19:32:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:18,035 INFO L93 Difference]: Finished difference Result 877 states and 2234 transitions. [2020-04-18 19:32:18,035 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 2234 transitions. [2020-04-18 19:32:18,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:18,038 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:32:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash 313946459, now seen corresponding path program 4 times [2020-04-18 19:32:18,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:18,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857483567] [2020-04-18 19:32:18,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:18,138 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 19:32:18,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857483567] [2020-04-18 19:32:18,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:18,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:18,140 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:18,143 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:18,177 INFO L259 McrAutomatonBuilder]: Finished intersection with 173 states and 377 transitions. [2020-04-18 19:32:18,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:18,260 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:32:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 19:32:18,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1317, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 19:32:18,262 INFO L87 Difference]: Start difference. First operand 877 states and 2234 transitions. Second operand 12 states. [2020-04-18 19:32:18,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:18,545 INFO L93 Difference]: Finished difference Result 967 states and 2417 transitions. [2020-04-18 19:32:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 2417 transitions. [2020-04-18 19:32:18,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:32:18,547 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:32:18,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:18,548 INFO L82 PathProgramCache]: Analyzing trace with hash 450147925, now seen corresponding path program 5 times [2020-04-18 19:32:18,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:18,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126159678] [2020-04-18 19:32:18,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:18,679 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 19:32:18,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126159678] [2020-04-18 19:32:18,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:18,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:18,680 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:18,686 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:18,714 INFO L259 McrAutomatonBuilder]: Finished intersection with 184 states and 414 transitions. [2020-04-18 19:32:18,714 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:18,749 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:32:18,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:18,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=1579, Unknown=0, NotChecked=0, Total=2162 [2020-04-18 19:32:18,750 INFO L87 Difference]: Start difference. First operand 967 states and 2417 transitions. Second operand 11 states. [2020-04-18 19:32:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:19,036 INFO L93 Difference]: Finished difference Result 1074 states and 2579 transitions. [2020-04-18 19:32:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 2579 transitions. [2020-04-18 19:32:19,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:19,041 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [32524504] [2020-04-18 19:32:19,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:19,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:19,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [32524504] [2020-04-18 19:32:19,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-04-18 19:32:19,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:19,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-04-18 19:32:19,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=1792, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:32:19,044 INFO L87 Difference]: Start difference. First operand 2430 states and 7847 transitions. Second operand 22 states. [2020-04-18 19:32:19,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:19,439 INFO L93 Difference]: Finished difference Result 3350 states and 10633 transitions. [2020-04-18 19:32:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-04-18 19:32:19,439 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2020-04-18 19:32:19,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:19,449 INFO L225 Difference]: With dead ends: 3350 [2020-04-18 19:32:19,449 INFO L226 Difference]: Without dead ends: 2694 [2020-04-18 19:32:19,451 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=746, Invalid=2116, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 19:32:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2020-04-18 19:32:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2226. [2020-04-18 19:32:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2226 states. [2020-04-18 19:32:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 7134 transitions. [2020-04-18 19:32:19,545 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 7134 transitions. Word has length 43 [2020-04-18 19:32:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:19,545 INFO L479 AbstractCegarLoop]: Abstraction has 2226 states and 7134 transitions. [2020-04-18 19:32:19,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-04-18 19:32:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 7134 transitions. [2020-04-18 19:32:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:32:19,551 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:19,551 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 19:32:19,551 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1259730271, now seen corresponding path program 1 times [2020-04-18 19:32:19,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:19,553 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [897207758] [2020-04-18 19:32:19,554 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:19,568 INFO L259 McrAutomatonBuilder]: Finished intersection with 700 states and 2080 transitions. [2020-04-18 19:32:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states. [2020-04-18 19:32:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:32:19,575 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:19,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:19,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1158382409, now seen corresponding path program 2 times [2020-04-18 19:32:19,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:19,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088737429] [2020-04-18 19:32:19,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:19,706 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 19:32:19,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088737429] [2020-04-18 19:32:19,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:19,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:19,708 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:19,711 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:19,749 INFO L259 McrAutomatonBuilder]: Finished intersection with 268 states and 658 transitions. [2020-04-18 19:32:19,749 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:19,870 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:32:19,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:19,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:32:19,871 INFO L87 Difference]: Start difference. First operand 700 states. Second operand 11 states. [2020-04-18 19:32:20,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:20,537 INFO L93 Difference]: Finished difference Result 818 states and 2316 transitions. [2020-04-18 19:32:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2316 transitions. [2020-04-18 19:32:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-04-18 19:32:20,540 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:20,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:20,540 INFO L82 PathProgramCache]: Analyzing trace with hash 563805067, now seen corresponding path program 3 times [2020-04-18 19:32:20,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:20,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124970203] [2020-04-18 19:32:20,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:20,625 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 19:32:20,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124970203] [2020-04-18 19:32:20,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:20,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:32:20,626 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:20,630 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:20,655 INFO L259 McrAutomatonBuilder]: Finished intersection with 209 states and 477 transitions. [2020-04-18 19:32:20,655 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:20,735 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:32:20,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:32:20,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:32:20,737 INFO L87 Difference]: Start difference. First operand 818 states and 2316 transitions. Second operand 6 states. [2020-04-18 19:32:20,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:20,810 INFO L93 Difference]: Finished difference Result 818 states and 2316 transitions. [2020-04-18 19:32:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 2316 transitions. [2020-04-18 19:32:20,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:20,812 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [897207758] [2020-04-18 19:32:20,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:20,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:32:20,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [897207758] [2020-04-18 19:32:20,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-04-18 19:32:20,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:20,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-04-18 19:32:20,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=931, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:32:20,814 INFO L87 Difference]: Start difference. First operand 2226 states and 7134 transitions. Second operand 15 states. [2020-04-18 19:32:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:21,947 INFO L93 Difference]: Finished difference Result 3443 states and 10881 transitions. [2020-04-18 19:32:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-04-18 19:32:21,947 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-04-18 19:32:21,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:21,955 INFO L225 Difference]: With dead ends: 3443 [2020-04-18 19:32:21,956 INFO L226 Difference]: Without dead ends: 2443 [2020-04-18 19:32:21,957 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=742, Invalid=3164, Unknown=0, NotChecked=0, Total=3906 [2020-04-18 19:32:21,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2020-04-18 19:32:22,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2014. [2020-04-18 19:32:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2020-04-18 19:32:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 6351 transitions. [2020-04-18 19:32:22,015 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 6351 transitions. Word has length 44 [2020-04-18 19:32:22,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:22,016 INFO L479 AbstractCegarLoop]: Abstraction has 2014 states and 6351 transitions. [2020-04-18 19:32:22,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-04-18 19:32:22,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 6351 transitions. [2020-04-18 19:32:22,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:32:22,020 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:22,020 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 19:32:22,021 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:22,021 INFO L82 PathProgramCache]: Analyzing trace with hash -211044402, now seen corresponding path program 1 times [2020-04-18 19:32:22,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:22,022 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1304671338] [2020-04-18 19:32:22,023 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:22,041 INFO L259 McrAutomatonBuilder]: Finished intersection with 868 states and 2633 transitions. [2020-04-18 19:32:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states. [2020-04-18 19:32:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:32:22,050 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:22,050 INFO L82 PathProgramCache]: Analyzing trace with hash -572118500, now seen corresponding path program 2 times [2020-04-18 19:32:22,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:22,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896783231] [2020-04-18 19:32:22,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:22,154 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 19:32:22,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896783231] [2020-04-18 19:32:22,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:22,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:22,155 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:22,159 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:22,177 INFO L259 McrAutomatonBuilder]: Finished intersection with 202 states and 437 transitions. [2020-04-18 19:32:22,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:22,302 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:32:22,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:32:22,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:32:22,303 INFO L87 Difference]: Start difference. First operand 868 states. Second operand 11 states. [2020-04-18 19:32:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:22,997 INFO L93 Difference]: Finished difference Result 1003 states and 2902 transitions. [2020-04-18 19:32:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2902 transitions. [2020-04-18 19:32:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:32:23,000 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1059042606, now seen corresponding path program 3 times [2020-04-18 19:32:23,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:23,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092947559] [2020-04-18 19:32:23,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:23,137 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 19:32:23,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092947559] [2020-04-18 19:32:23,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:23,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:23,138 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:23,142 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:23,160 INFO L259 McrAutomatonBuilder]: Finished intersection with 175 states and 366 transitions. [2020-04-18 19:32:23,160 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:23,277 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:32:23,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:32:23,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=874, Unknown=0, NotChecked=0, Total=1122 [2020-04-18 19:32:23,279 INFO L87 Difference]: Start difference. First operand 1003 states and 2902 transitions. Second operand 8 states. [2020-04-18 19:32:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:23,422 INFO L93 Difference]: Finished difference Result 1003 states and 2902 transitions. [2020-04-18 19:32:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2902 transitions. [2020-04-18 19:32:23,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:23,424 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1304671338] [2020-04-18 19:32:23,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:23,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:23,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1304671338] [2020-04-18 19:32:23,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-04-18 19:32:23,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:23,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-04-18 19:32:23,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1261, Unknown=0, NotChecked=0, Total=1560 [2020-04-18 19:32:23,426 INFO L87 Difference]: Start difference. First operand 2014 states and 6351 transitions. Second operand 17 states. [2020-04-18 19:32:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:24,536 INFO L93 Difference]: Finished difference Result 2542 states and 7806 transitions. [2020-04-18 19:32:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-04-18 19:32:24,537 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-04-18 19:32:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:24,544 INFO L225 Difference]: With dead ends: 2542 [2020-04-18 19:32:24,544 INFO L226 Difference]: Without dead ends: 1714 [2020-04-18 19:32:24,546 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=735, Invalid=3555, Unknown=0, NotChecked=0, Total=4290 [2020-04-18 19:32:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-04-18 19:32:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1474. [2020-04-18 19:32:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-04-18 19:32:24,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 4446 transitions. [2020-04-18 19:32:24,589 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 4446 transitions. Word has length 45 [2020-04-18 19:32:24,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:24,589 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 4446 transitions. [2020-04-18 19:32:24,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-04-18 19:32:24,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 4446 transitions. [2020-04-18 19:32:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:32:24,593 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:24,593 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, 1] [2020-04-18 19:32:24,593 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:24,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:24,593 INFO L82 PathProgramCache]: Analyzing trace with hash -962653023, now seen corresponding path program 1 times [2020-04-18 19:32:24,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:24,594 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1133812135] [2020-04-18 19:32:24,595 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:24,618 INFO L259 McrAutomatonBuilder]: Finished intersection with 1063 states and 3294 transitions. [2020-04-18 19:32:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states. [2020-04-18 19:32:24,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:32:24,629 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:24,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1649551315, now seen corresponding path program 2 times [2020-04-18 19:32:24,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:24,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746511528] [2020-04-18 19:32:24,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:24,728 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 19:32:24,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746511528] [2020-04-18 19:32:24,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:24,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:24,730 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:24,734 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:24,758 INFO L259 McrAutomatonBuilder]: Finished intersection with 208 states and 448 transitions. [2020-04-18 19:32:24,758 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:24,863 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 23 times. [2020-04-18 19:32:24,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:32:24,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:32:24,864 INFO L87 Difference]: Start difference. First operand 1063 states. Second operand 10 states. [2020-04-18 19:32:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:25,445 INFO L93 Difference]: Finished difference Result 1588 states and 4913 transitions. [2020-04-18 19:32:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 4913 transitions. [2020-04-18 19:32:25,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:32:25,448 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash -429946923, now seen corresponding path program 3 times [2020-04-18 19:32:25,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:25,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616277735] [2020-04-18 19:32:25,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:25,528 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 19:32:25,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616277735] [2020-04-18 19:32:25,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:25,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:25,529 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:25,533 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:25,568 INFO L259 McrAutomatonBuilder]: Finished intersection with 237 states and 526 transitions. [2020-04-18 19:32:25,569 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:25,595 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:32:25,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:25,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:32:25,596 INFO L87 Difference]: Start difference. First operand 1588 states and 4913 transitions. Second operand 7 states. [2020-04-18 19:32:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:25,771 INFO L93 Difference]: Finished difference Result 1876 states and 5561 transitions. [2020-04-18 19:32:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 5561 transitions. [2020-04-18 19:32:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:32:25,774 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:32:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:25,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2096674215, now seen corresponding path program 4 times [2020-04-18 19:32:25,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:25,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681254351] [2020-04-18 19:32:25,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:25,864 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 19:32:25,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681254351] [2020-04-18 19:32:25,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:25,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:25,865 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:25,869 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:25,898 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 415 transitions. [2020-04-18 19:32:25,898 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:26,031 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:32:26,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:32:26,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2020-04-18 19:32:26,032 INFO L87 Difference]: Start difference. First operand 1876 states and 5561 transitions. Second operand 8 states. [2020-04-18 19:32:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:26,294 INFO L93 Difference]: Finished difference Result 1876 states and 5561 transitions. [2020-04-18 19:32:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 5561 transitions. [2020-04-18 19:32:26,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:26,298 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1133812135] [2020-04-18 19:32:26,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:26,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:26,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1133812135] [2020-04-18 19:32:26,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:32:26,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:26,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:32:26,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=1637, Unknown=0, NotChecked=0, Total=1980 [2020-04-18 19:32:26,299 INFO L87 Difference]: Start difference. First operand 1474 states and 4446 transitions. Second operand 18 states. [2020-04-18 19:32:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:27,257 INFO L93 Difference]: Finished difference Result 1444 states and 4218 transitions. [2020-04-18 19:32:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-04-18 19:32:27,258 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-04-18 19:32:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:27,262 INFO L225 Difference]: With dead ends: 1444 [2020-04-18 19:32:27,262 INFO L226 Difference]: Without dead ends: 728 [2020-04-18 19:32:27,264 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=644, Invalid=3516, Unknown=0, NotChecked=0, Total=4160 [2020-04-18 19:32:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-04-18 19:32:27,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 704. [2020-04-18 19:32:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-04-18 19:32:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 2004 transitions. [2020-04-18 19:32:27,286 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 2004 transitions. Word has length 46 [2020-04-18 19:32:27,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:27,286 INFO L479 AbstractCegarLoop]: Abstraction has 704 states and 2004 transitions. [2020-04-18 19:32:27,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:32:27,287 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 2004 transitions. [2020-04-18 19:32:27,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:32:27,289 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:32:27,289 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, 1, 1, 1] [2020-04-18 19:32:27,289 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:32:27,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:27,290 INFO L82 PathProgramCache]: Analyzing trace with hash 171910110, now seen corresponding path program 1 times [2020-04-18 19:32:27,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:32:27,290 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [295494467] [2020-04-18 19:32:27,292 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:27,395 INFO L259 McrAutomatonBuilder]: Finished intersection with 1761 states and 5712 transitions. [2020-04-18 19:32:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states. [2020-04-18 19:32:27,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:32:27,417 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:32:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:27,417 INFO L82 PathProgramCache]: Analyzing trace with hash -484838578, now seen corresponding path program 2 times [2020-04-18 19:32:27,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:27,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966339959] [2020-04-18 19:32:27,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:27,527 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 19:32:27,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966339959] [2020-04-18 19:32:27,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:27,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:27,528 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:27,532 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:27,561 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 398 transitions. [2020-04-18 19:32:27,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:27,640 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:32:27,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:27,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:32:27,641 INFO L87 Difference]: Start difference. First operand 1761 states. Second operand 9 states. [2020-04-18 19:32:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:28,023 INFO L93 Difference]: Finished difference Result 2441 states and 7644 transitions. [2020-04-18 19:32:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 7644 transitions. [2020-04-18 19:32:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:32:28,027 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:32:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:28,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1099862712, now seen corresponding path program 3 times [2020-04-18 19:32:28,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:28,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489094270] [2020-04-18 19:32:28,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:28,123 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 19:32:28,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489094270] [2020-04-18 19:32:28,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:28,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:28,125 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:28,129 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:28,163 INFO L259 McrAutomatonBuilder]: Finished intersection with 214 states and 454 transitions. [2020-04-18 19:32:28,163 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:28,277 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:32:28,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:32:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2020-04-18 19:32:28,278 INFO L87 Difference]: Start difference. First operand 2441 states and 7644 transitions. Second operand 8 states. [2020-04-18 19:32:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:28,658 INFO L93 Difference]: Finished difference Result 2487 states and 7688 transitions. [2020-04-18 19:32:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 7688 transitions. [2020-04-18 19:32:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:32:28,662 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:32:28,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:28,662 INFO L82 PathProgramCache]: Analyzing trace with hash -577749880, now seen corresponding path program 4 times [2020-04-18 19:32:28,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:28,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203481656] [2020-04-18 19:32:28,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:28,766 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 19:32:28,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203481656] [2020-04-18 19:32:28,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:28,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:32:28,767 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:28,771 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:28,804 INFO L259 McrAutomatonBuilder]: Finished intersection with 245 states and 536 transitions. [2020-04-18 19:32:28,804 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:28,883 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 26 times. [2020-04-18 19:32:28,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:32:28,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1245, Unknown=0, NotChecked=0, Total=1482 [2020-04-18 19:32:28,885 INFO L87 Difference]: Start difference. First operand 2487 states and 7688 transitions. Second operand 9 states. [2020-04-18 19:32:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:29,357 INFO L93 Difference]: Finished difference Result 4861 states and 14498 transitions. [2020-04-18 19:32:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 14498 transitions. [2020-04-18 19:32:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-04-18 19:32:29,368 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:32:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:32:29,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1615839712, now seen corresponding path program 5 times [2020-04-18 19:32:29,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:32:29,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737068993] [2020-04-18 19:32:29,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:32:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:32:29,479 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 19:32:29,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737068993] [2020-04-18 19:32:29,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:32:29,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:32:29,481 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:32:29,489 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:32:29,616 INFO L259 McrAutomatonBuilder]: Finished intersection with 293 states and 696 transitions. [2020-04-18 19:32:29,617 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:32:29,713 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:32:29,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:32:29,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=2175, Unknown=0, NotChecked=0, Total=2550 [2020-04-18 19:32:29,714 INFO L87 Difference]: Start difference. First operand 4861 states and 14498 transitions. Second operand 7 states. [2020-04-18 19:32:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:30,072 INFO L93 Difference]: Finished difference Result 7394 states and 21561 transitions. [2020-04-18 19:32:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7394 states and 21561 transitions. [2020-04-18 19:32:30,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:30,093 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [295494467] [2020-04-18 19:32:30,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:32:30,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:32:30,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [295494467] [2020-04-18 19:32:30,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:32:30,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:32:30,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:32:30,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2847, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 19:32:30,098 INFO L87 Difference]: Start difference. First operand 704 states and 2004 transitions. Second operand 20 states. [2020-04-18 19:32:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:32:31,522 INFO L93 Difference]: Finished difference Result 1502 states and 4312 transitions. [2020-04-18 19:32:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-04-18 19:32:31,522 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-04-18 19:32:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:32:31,522 INFO L225 Difference]: With dead ends: 1502 [2020-04-18 19:32:31,523 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:32:31,526 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3151 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1082, Invalid=8230, Unknown=0, NotChecked=0, Total=9312 [2020-04-18 19:32:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:32:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:32:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:32:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:32:31,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-04-18 19:32:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:32:31,527 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:32:31,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:32:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:32:31,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:32:31,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:32:31 BasicIcfg [2020-04-18 19:32:31,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:32:31,535 INFO L168 Benchmark]: Toolchain (without parser) took 23086.66 ms. Allocated memory was 142.1 MB in the beginning and 729.8 MB in the end (delta: 587.7 MB). Free memory was 105.2 MB in the beginning and 314.0 MB in the end (delta: -208.8 MB). Peak memory consumption was 378.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:32:31,535 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 142.1 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 19:32:31,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.90 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 160.2 MB in the end (delta: -56.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:32:31,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.55 ms. Allocated memory is still 205.0 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:32:31,537 INFO L168 Benchmark]: Boogie Preprocessor took 29.38 ms. Allocated memory is still 205.0 MB. Free memory was 158.3 MB in the beginning and 156.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:32:31,537 INFO L168 Benchmark]: RCFGBuilder took 482.92 ms. Allocated memory is still 205.0 MB. Free memory was 156.4 MB in the beginning and 134.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:32:31,538 INFO L168 Benchmark]: TraceAbstraction took 21728.83 ms. Allocated memory was 205.0 MB in the beginning and 729.8 MB in the end (delta: 524.8 MB). Free memory was 134.1 MB in the beginning and 314.0 MB in the end (delta: -179.9 MB). Peak memory consumption was 344.9 MB. Max. memory is 7.1 GB. [2020-04-18 19:32:31,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 142.1 MB. Free memory was 125.2 MB in the beginning and 125.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 773.90 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 160.2 MB in the end (delta: -56.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.55 ms. Allocated memory is still 205.0 MB. Free memory was 160.2 MB in the beginning and 158.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.38 ms. Allocated memory is still 205.0 MB. Free memory was 158.3 MB in the beginning and 156.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.92 ms. Allocated memory is still 205.0 MB. Free memory was 156.4 MB in the beginning and 134.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21728.83 ms. Allocated memory was 205.0 MB in the beginning and 729.8 MB in the end (delta: 524.8 MB). Free memory was 134.1 MB in the beginning and 314.0 MB in the end (delta: -179.9 MB). Peak memory consumption was 344.9 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 954 SDtfs, 3678 SDslu, 6926 SDs, 0 SdLazy, 1881 SolverSat, 437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1529 GetRequests, 1131 SyntacticMatches, 0 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7813 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8472occurred 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: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 5828 StatesRemovedByMinimization, 8 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...