/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 15:08:59,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 15:08:59,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 15:08:59,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 15:08:59,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 15:08:59,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 15:08:59,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 15:08:59,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 15:08:59,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 15:08:59,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 15:08:59,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 15:08:59,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 15:08:59,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 15:08:59,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 15:08:59,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 15:08:59,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 15:08:59,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 15:08:59,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 15:08:59,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 15:08:59,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 15:08:59,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 15:08:59,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 15:08:59,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 15:08:59,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 15:08:59,170 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 15:08:59,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 15:08:59,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 15:08:59,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 15:08:59,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 15:08:59,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 15:08:59,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 15:08:59,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 15:08:59,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 15:08:59,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 15:08:59,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 15:08:59,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 15:08:59,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 15:08:59,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 15:08:59,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 15:08:59,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 15:08:59,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 15:08:59,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf [2020-04-18 15:08:59,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 15:08:59,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 15:08:59,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 15:08:59,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 15:08:59,195 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 15:08:59,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 15:08:59,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 15:08:59,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 15:08:59,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 15:08:59,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 15:08:59,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 15:08:59,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 15:08:59,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 15:08:59,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 15:08:59,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 15:08:59,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 15:08:59,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 15:08:59,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 15:08:59,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 15:08:59,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 15:08:59,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 15:08:59,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:08:59,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 15:08:59,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 15:08:59,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 15:08:59,199 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 15:08:59,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 15:08:59,199 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 15:08:59,199 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 15:08:59,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 15:08:59,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 15:08:59,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 15:08:59,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 15:08:59,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 15:08:59,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 15:08:59,493 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 15:08:59,495 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-04-18 15:08:59,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2c38906/83b09f4c3c4e4fc08766edb5fdc83181/FLAGd0a6683b1 [2020-04-18 15:09:00,092 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 15:09:00,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-04-18 15:09:00,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2c38906/83b09f4c3c4e4fc08766edb5fdc83181/FLAGd0a6683b1 [2020-04-18 15:09:00,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da2c38906/83b09f4c3c4e4fc08766edb5fdc83181 [2020-04-18 15:09:00,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 15:09:00,458 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 15:09:00,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 15:09:00,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 15:09:00,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 15:09:00,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:09:00" (1/1) ... [2020-04-18 15:09:00,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165ac1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:00, skipping insertion in model container [2020-04-18 15:09:00,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:09:00" (1/1) ... [2020-04-18 15:09:00,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 15:09:00,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 15:09:01,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:09:01,011 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 15:09:01,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 15:09:01,146 INFO L208 MainTranslator]: Completed translation [2020-04-18 15:09:01,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01 WrapperNode [2020-04-18 15:09:01,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 15:09:01,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 15:09:01,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 15:09:01,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 15:09:01,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 15:09:01,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 15:09:01,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 15:09:01,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 15:09:01,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... [2020-04-18 15:09:01,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 15:09:01,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 15:09:01,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 15:09:01,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 15:09:01,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 15:09:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 15:09:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 15:09:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 15:09:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 15:09:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 15:09:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 15:09:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 15:09:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 15:09:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 15:09:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 15:09:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 15:09:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 15:09:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 15:09:01,307 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 15:09:01,711 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 15:09:01,711 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 15:09:01,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:09:01 BoogieIcfgContainer [2020-04-18 15:09:01,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 15:09:01,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 15:09:01,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 15:09:01,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 15:09:01,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:09:00" (1/3) ... [2020-04-18 15:09:01,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578a18d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:09:01, skipping insertion in model container [2020-04-18 15:09:01,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:09:01" (2/3) ... [2020-04-18 15:09:01,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578a18d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:09:01, skipping insertion in model container [2020-04-18 15:09:01,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:09:01" (3/3) ... [2020-04-18 15:09:01,726 INFO L109 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2020-04-18 15:09:01,735 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 15:09:01,735 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 15:09:01,742 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 15:09:01,743 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 15:09:01,774 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,774 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,775 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,776 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,776 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,777 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,777 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,778 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,778 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,778 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,779 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,779 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,779 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,780 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,781 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,782 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,782 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,789 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,789 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,789 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,790 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,807 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,808 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,808 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,808 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,811 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,811 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,812 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,812 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 15:09:01,834 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 15:09:01,855 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 15:09:01,855 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 15:09:01,856 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 15:09:01,856 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 15:09:01,856 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 15:09:01,856 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 15:09:01,856 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 15:09:01,857 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 15:09:01,873 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 15:09:01,876 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:09:01,931 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:09:01,932 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:09:01,937 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:09:01,939 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 15:09:01,961 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 15:09:01,962 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 15:09:01,962 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 15:09:01,965 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 15:09:01,966 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 15:09:03,525 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2287 [2020-04-18 15:09:03,525 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 15:09:03,529 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 15:09:03,554 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 15:09:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 15:09:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:09:03,564 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:03,565 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:03,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:03,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:03,571 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-04-18 15:09:03,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:03,577 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1666537266] [2020-04-18 15:09:03,589 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:03,600 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:09:03,602 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 15:09:03,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 15:09:03,603 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:03,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:03,603 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 2 times [2020-04-18 15:09:03,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:03,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062725653] [2020-04-18 15:09:03,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:03,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062725653] [2020-04-18 15:09:03,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:03,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:09:03,817 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:03,818 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:03,821 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 15:09:03,821 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:03,828 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:09:03,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:03,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:03,834 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 15:09:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:03,838 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 15:09:03,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 15:09:03,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:03,839 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1666537266] [2020-04-18 15:09:03,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:03,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:09:03,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1666537266] [2020-04-18 15:09:03,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 15:09:03,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:03,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:03,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:03,847 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 15:09:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:03,887 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-18 15:09:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 15:09:03,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 15:09:03,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:03,921 INFO L225 Difference]: With dead ends: 282 [2020-04-18 15:09:03,922 INFO L226 Difference]: Without dead ends: 218 [2020-04-18 15:09:03,923 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-18 15:09:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-18 15:09:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-18 15:09:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-18 15:09:04,016 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-18 15:09:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:04,017 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-18 15:09:04,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 15:09:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-18 15:09:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:09:04,019 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:04,019 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:04,019 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,020 INFO L82 PathProgramCache]: Analyzing trace with hash 586925587, now seen corresponding path program 1 times [2020-04-18 15:09:04,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:04,020 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [589715712] [2020-04-18 15:09:04,021 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,021 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 13 transitions. [2020-04-18 15:09:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-04-18 15:09:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:09:04,022 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash 586926517, now seen corresponding path program 2 times [2020-04-18 15:09:04,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166566676] [2020-04-18 15:09:04,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,128 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 15:09:04,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166566676] [2020-04-18 15:09:04,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:04,129 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,130 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,131 INFO L259 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-04-18 15:09:04,131 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,135 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:09:04,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:04,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:04,136 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-04-18 15:09:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,139 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:09:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:09:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 15:09:04,139 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:09:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,140 INFO L82 PathProgramCache]: Analyzing trace with hash 586925587, now seen corresponding path program 3 times [2020-04-18 15:09:04,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733307210] [2020-04-18 15:09:04,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:04,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733307210] [2020-04-18 15:09:04,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:09:04,217 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,217 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,219 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-04-18 15:09:04,219 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,224 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:09:04,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:04,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:09:04,225 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-04-18 15:09:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,226 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-04-18 15:09:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-04-18 15:09:04,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:04,227 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [589715712] [2020-04-18 15:09:04,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:04,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:09:04,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [589715712] [2020-04-18 15:09:04,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:09:04,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:04,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:04,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:09:04,230 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-18 15:09:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,260 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-04-18 15:09:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:09:04,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 15:09:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:04,263 INFO L225 Difference]: With dead ends: 212 [2020-04-18 15:09:04,263 INFO L226 Difference]: Without dead ends: 212 [2020-04-18 15:09:04,265 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-04-18 15:09:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-04-18 15:09:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-04-18 15:09:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-04-18 15:09:04,280 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-04-18 15:09:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:04,281 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-04-18 15:09:04,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:09:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-04-18 15:09:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:09:04,283 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:04,283 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:04,283 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,283 INFO L82 PathProgramCache]: Analyzing trace with hash 560175129, now seen corresponding path program 1 times [2020-04-18 15:09:04,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:04,284 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1683422032] [2020-04-18 15:09:04,284 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,285 INFO L259 McrAutomatonBuilder]: Finished intersection with 20 states and 30 transitions. [2020-04-18 15:09:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-04-18 15:09:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:09:04,286 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash 560176059, now seen corresponding path program 2 times [2020-04-18 15:09:04,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225914811] [2020-04-18 15:09:04,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:04,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225914811] [2020-04-18 15:09:04,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:04,334 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,335 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,337 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-04-18 15:09:04,337 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,341 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:09:04,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:04,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:04,342 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-04-18 15:09:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,345 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 15:09:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 15:09:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 15:09:04,346 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:09:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,346 INFO L82 PathProgramCache]: Analyzing trace with hash 560175129, now seen corresponding path program 3 times [2020-04-18 15:09:04,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012565965] [2020-04-18 15:09:04,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:04,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012565965] [2020-04-18 15:09:04,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:04,403 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,404 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,406 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-04-18 15:09:04,406 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,415 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:09:04,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:04,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:09:04,415 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 4 states. [2020-04-18 15:09:04,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,426 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2020-04-18 15:09:04,426 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2020-04-18 15:09:04,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:04,427 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1683422032] [2020-04-18 15:09:04,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:04,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:09:04,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1683422032] [2020-04-18 15:09:04,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:09:04,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:04,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:04,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:04,428 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-04-18 15:09:04,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,447 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-18 15:09:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 15:09:04,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 15:09:04,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:04,449 INFO L225 Difference]: With dead ends: 242 [2020-04-18 15:09:04,449 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 15:09:04,449 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:04,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 15:09:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 15:09:04,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 15:09:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-18 15:09:04,469 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-04-18 15:09:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:04,469 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-18 15:09:04,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:09:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-18 15:09:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:09:04,473 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:04,473 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:04,474 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:04,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1242480203, now seen corresponding path program 1 times [2020-04-18 15:09:04,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:04,480 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [799652994] [2020-04-18 15:09:04,481 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,482 INFO L259 McrAutomatonBuilder]: Finished intersection with 28 states and 47 transitions. [2020-04-18 15:09:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-04-18 15:09:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:09:04,483 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1242479273, now seen corresponding path program 2 times [2020-04-18 15:09:04,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736705674] [2020-04-18 15:09:04,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:04,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736705674] [2020-04-18 15:09:04,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:04,550 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,551 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,553 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:09:04,553 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,558 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:09:04,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:04,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:04,558 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-04-18 15:09:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,561 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:09:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:09:04,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 15:09:04,562 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:09:04,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1242480203, now seen corresponding path program 3 times [2020-04-18 15:09:04,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082768171] [2020-04-18 15:09:04,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:04,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082768171] [2020-04-18 15:09:04,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 15:09:04,604 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,609 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-04-18 15:09:04,609 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,616 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:09:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:09:04,617 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand 3 states. [2020-04-18 15:09:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,618 INFO L93 Difference]: Finished difference Result 31 states and 49 transitions. [2020-04-18 15:09:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2020-04-18 15:09:04,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:04,619 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [799652994] [2020-04-18 15:09:04,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:04,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 15:09:04,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [799652994] [2020-04-18 15:09:04,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 15:09:04,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:04,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:04,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:09:04,621 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-18 15:09:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,638 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-04-18 15:09:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 15:09:04,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 15:09:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:04,642 INFO L225 Difference]: With dead ends: 144 [2020-04-18 15:09:04,643 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 15:09:04,643 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 15:09:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 15:09:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 15:09:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 15:09:04,661 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-04-18 15:09:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:04,661 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 15:09:04,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 15:09:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 15:09:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:09:04,665 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:04,665 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:04,665 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:04,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,665 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-04-18 15:09:04,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:04,666 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [420859063] [2020-04-18 15:09:04,668 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,670 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 15:09:04,671 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 15:09:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:09:04,671 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,672 INFO L82 PathProgramCache]: Analyzing trace with hash 389652353, now seen corresponding path program 2 times [2020-04-18 15:09:04,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583175663] [2020-04-18 15:09:04,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:04,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583175663] [2020-04-18 15:09:04,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:04,719 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,720 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,725 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 58 transitions. [2020-04-18 15:09:04,725 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,731 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:09:04,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:04,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:04,732 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 15:09:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,736 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 15:09:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 15:09:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 15:09:04,736 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:09:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 3 times [2020-04-18 15:09:04,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429284869] [2020-04-18 15:09:04,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:04,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429284869] [2020-04-18 15:09:04,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:04,800 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,801 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,805 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-04-18 15:09:04,805 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,823 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:09:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:04,824 INFO L87 Difference]: Start difference. First operand 60 states and 125 transitions. Second operand 4 states. [2020-04-18 15:09:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,835 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 15:09:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 15:09:04,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:04,836 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [420859063] [2020-04-18 15:09:04,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:04,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:09:04,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [420859063] [2020-04-18 15:09:04,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:09:04,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:04,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:09:04,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:09:04,838 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-04-18 15:09:04,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,902 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 15:09:04,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 15:09:04,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 15:09:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:04,904 INFO L225 Difference]: With dead ends: 164 [2020-04-18 15:09:04,905 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 15:09:04,905 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:09:04,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 15:09:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 15:09:04,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 15:09:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 15:09:04,911 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 15:09:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:04,911 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 15:09:04,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:09:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 15:09:04,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:09:04,912 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:04,912 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:04,913 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:04,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,913 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 1 times [2020-04-18 15:09:04,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:04,914 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [640190796] [2020-04-18 15:09:04,914 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,917 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 160 transitions. [2020-04-18 15:09:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 15:09:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:09:04,918 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:04,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,919 INFO L82 PathProgramCache]: Analyzing trace with hash -805678740, now seen corresponding path program 2 times [2020-04-18 15:09:04,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710591209] [2020-04-18 15:09:04,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:04,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710591209] [2020-04-18 15:09:04,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:04,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:04,946 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:04,948 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:04,954 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 65 transitions. [2020-04-18 15:09:04,954 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:04,958 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:09:04,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:04,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:04,959 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-04-18 15:09:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:04,963 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 15:09:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 15:09:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:09:04,963 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:09:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:04,964 INFO L82 PathProgramCache]: Analyzing trace with hash -805707570, now seen corresponding path program 3 times [2020-04-18 15:09:04,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:04,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397601800] [2020-04-18 15:09:04,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397601800] [2020-04-18 15:09:05,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:09:05,021 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,023 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,028 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 73 transitions. [2020-04-18 15:09:05,028 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:05,042 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:09:05,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:05,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:05,044 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 4 states. [2020-04-18 15:09:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,064 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2020-04-18 15:09:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 183 transitions. [2020-04-18 15:09:05,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 15:09:05,065 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:09:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,066 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 4 times [2020-04-18 15:09:05,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:05,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955211502] [2020-04-18 15:09:05,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955211502] [2020-04-18 15:09:05,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:09:05,127 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,128 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,132 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 15:09:05,133 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:05,189 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:09:05,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:09:05,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:09:05,190 INFO L87 Difference]: Start difference. First operand 88 states and 183 transitions. Second operand 6 states. [2020-04-18 15:09:05,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,215 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2020-04-18 15:09:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 183 transitions. [2020-04-18 15:09:05,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:05,216 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [640190796] [2020-04-18 15:09:05,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:05,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 15:09:05,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [640190796] [2020-04-18 15:09:05,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 15:09:05,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:05,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 15:09:05,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 15:09:05,218 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 7 states. [2020-04-18 15:09:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,316 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 15:09:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:09:05,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 15:09:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:05,317 INFO L225 Difference]: With dead ends: 122 [2020-04-18 15:09:05,317 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 15:09:05,318 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 15:09:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 15:09:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 15:09:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 15:09:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 15:09:05,322 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 15:09:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:05,322 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 15:09:05,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 15:09:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 15:09:05,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:09:05,323 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:05,324 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:05,324 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1341104517, now seen corresponding path program 1 times [2020-04-18 15:09:05,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:05,325 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [2013450291] [2020-04-18 15:09:05,325 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,327 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 15:09:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 15:09:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:09:05,328 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:05,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,328 INFO L82 PathProgramCache]: Analyzing trace with hash -671662917, now seen corresponding path program 2 times [2020-04-18 15:09:05,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:05,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766958800] [2020-04-18 15:09:05,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766958800] [2020-04-18 15:09:05,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:05,354 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,356 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,358 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:09:05,358 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:05,362 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:09:05,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:05,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:05,363 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 15:09:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,365 INFO L93 Difference]: Finished difference Result 72 states and 139 transitions. [2020-04-18 15:09:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 139 transitions. [2020-04-18 15:09:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:09:05,366 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:09:05,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,366 INFO L82 PathProgramCache]: Analyzing trace with hash -699368547, now seen corresponding path program 3 times [2020-04-18 15:09:05,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:05,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294227849] [2020-04-18 15:09:05,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294227849] [2020-04-18 15:09:05,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:05,391 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,392 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 15:09:05,394 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:05,398 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:09:05,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:05,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 15:09:05,399 INFO L87 Difference]: Start difference. First operand 72 states and 139 transitions. Second operand 3 states. [2020-04-18 15:09:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,401 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 15:09:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 15:09:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 15:09:05,402 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:09:05,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,403 INFO L82 PathProgramCache]: Analyzing trace with hash -699740247, now seen corresponding path program 4 times [2020-04-18 15:09:05,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:05,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537664188] [2020-04-18 15:09:05,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537664188] [2020-04-18 15:09:05,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:05,424 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,425 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,427 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 15:09:05,427 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:05,435 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 15:09:05,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:05,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:05,436 INFO L87 Difference]: Start difference. First operand 80 states and 149 transitions. Second operand 3 states. [2020-04-18 15:09:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,446 INFO L93 Difference]: Finished difference Result 80 states and 149 transitions. [2020-04-18 15:09:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 149 transitions. [2020-04-18 15:09:05,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:05,447 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [2013450291] [2020-04-18 15:09:05,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:05,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:09:05,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [2013450291] [2020-04-18 15:09:05,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 15:09:05,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:05,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 15:09:05,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:05,449 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 5 states. [2020-04-18 15:09:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,473 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 15:09:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 15:09:05,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 15:09:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:05,474 INFO L225 Difference]: With dead ends: 115 [2020-04-18 15:09:05,474 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 15:09:05,474 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 15:09:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 15:09:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 15:09:05,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 15:09:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 15:09:05,479 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 15:09:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:05,479 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 15:09:05,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 15:09:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 15:09:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:09:05,481 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:05,481 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:05,481 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 1 times [2020-04-18 15:09:05,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:05,482 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1096818926] [2020-04-18 15:09:05,483 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,485 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 15:09:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 15:09:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:09:05,488 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1340562585, now seen corresponding path program 2 times [2020-04-18 15:09:05,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:05,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427805967] [2020-04-18 15:09:05,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427805967] [2020-04-18 15:09:05,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:05,536 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,537 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,543 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 109 transitions. [2020-04-18 15:09:05,543 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:05,547 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:09:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:05,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:05,548 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 15:09:05,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,552 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 15:09:05,552 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 15:09:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:09:05,553 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:09:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1341456315, now seen corresponding path program 3 times [2020-04-18 15:09:05,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:05,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315748950] [2020-04-18 15:09:05,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315748950] [2020-04-18 15:09:05,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:09:05,612 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,614 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,620 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 114 transitions. [2020-04-18 15:09:05,620 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:05,641 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:09:05,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:05,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:05,642 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 4 states. [2020-04-18 15:09:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,673 INFO L93 Difference]: Finished difference Result 189 states and 434 transitions. [2020-04-18 15:09:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 434 transitions. [2020-04-18 15:09:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:09:05,674 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:09:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1362108825, now seen corresponding path program 4 times [2020-04-18 15:09:05,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:05,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288297732] [2020-04-18 15:09:05,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288297732] [2020-04-18 15:09:05,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:09:05,742 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,743 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,749 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 108 transitions. [2020-04-18 15:09:05,749 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:05,796 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 15:09:05,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:09:05,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:09:05,797 INFO L87 Difference]: Start difference. First operand 189 states and 434 transitions. Second operand 6 states. [2020-04-18 15:09:05,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:05,863 INFO L93 Difference]: Finished difference Result 194 states and 438 transitions. [2020-04-18 15:09:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 438 transitions. [2020-04-18 15:09:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 15:09:05,864 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:09:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 5 times [2020-04-18 15:09:05,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:05,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833453516] [2020-04-18 15:09:05,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:05,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833453516] [2020-04-18 15:09:05,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:05,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:09:05,949 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:05,950 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:05,955 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 100 transitions. [2020-04-18 15:09:05,955 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:06,017 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:09:06,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:09:06,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 15:09:06,018 INFO L87 Difference]: Start difference. First operand 194 states and 438 transitions. Second operand 8 states. [2020-04-18 15:09:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:06,078 INFO L93 Difference]: Finished difference Result 194 states and 438 transitions. [2020-04-18 15:09:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 438 transitions. [2020-04-18 15:09:06,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:06,080 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1096818926] [2020-04-18 15:09:06,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:06,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 15:09:06,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1096818926] [2020-04-18 15:09:06,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 15:09:06,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:06,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 15:09:06,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:09:06,082 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 9 states. [2020-04-18 15:09:06,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:06,187 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-04-18 15:09:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 15:09:06,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-04-18 15:09:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:06,188 INFO L225 Difference]: With dead ends: 92 [2020-04-18 15:09:06,188 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 15:09:06,188 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:09:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 15:09:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 15:09:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 15:09:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 15:09:06,190 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 15:09:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:06,191 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 15:09:06,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 15:09:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 15:09:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:09:06,192 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 15:09:06,192 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 15:09:06,193 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 15:09:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:06,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1202444330, now seen corresponding path program 1 times [2020-04-18 15:09:06,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 15:09:06,194 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [165316771] [2020-04-18 15:09:06,195 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:06,198 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 15:09:06,200 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 15:09:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:09:06,202 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 15:09:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:06,202 INFO L82 PathProgramCache]: Analyzing trace with hash 209503778, now seen corresponding path program 2 times [2020-04-18 15:09:06,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:06,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416881330] [2020-04-18 15:09:06,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:06,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416881330] [2020-04-18 15:09:06,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:06,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:06,241 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:06,243 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:06,249 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 116 transitions. [2020-04-18 15:09:06,249 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:06,256 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 15:09:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 15:09:06,257 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 15:09:06,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:06,262 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 15:09:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 15:09:06,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:09:06,263 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 15:09:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:06,264 INFO L82 PathProgramCache]: Analyzing trace with hash -649370752, now seen corresponding path program 3 times [2020-04-18 15:09:06,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:06,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503079525] [2020-04-18 15:09:06,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:06,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503079525] [2020-04-18 15:09:06,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:06,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:09:06,300 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:06,301 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:06,309 INFO L259 McrAutomatonBuilder]: Finished intersection with 75 states and 137 transitions. [2020-04-18 15:09:06,309 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:06,322 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 15:09:06,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 15:09:06,323 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 4 states. [2020-04-18 15:09:06,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:06,355 INFO L93 Difference]: Finished difference Result 377 states and 955 transitions. [2020-04-18 15:09:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 955 transitions. [2020-04-18 15:09:06,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:09:06,357 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 15:09:06,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:06,357 INFO L82 PathProgramCache]: Analyzing trace with hash 978403618, now seen corresponding path program 4 times [2020-04-18 15:09:06,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:06,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893977364] [2020-04-18 15:09:06,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:06,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893977364] [2020-04-18 15:09:06,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:06,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 15:09:06,399 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:06,400 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:06,408 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 125 transitions. [2020-04-18 15:09:06,409 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:06,455 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:09:06,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 15:09:06,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 15:09:06,456 INFO L87 Difference]: Start difference. First operand 377 states and 955 transitions. Second operand 6 states. [2020-04-18 15:09:06,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:06,561 INFO L93 Difference]: Finished difference Result 400 states and 985 transitions. [2020-04-18 15:09:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 985 transitions. [2020-04-18 15:09:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:09:06,563 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 15:09:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash 931650658, now seen corresponding path program 5 times [2020-04-18 15:09:06,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:06,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380064949] [2020-04-18 15:09:06,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:06,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380064949] [2020-04-18 15:09:06,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:06,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 15:09:06,594 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:06,595 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:06,636 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 112 transitions. [2020-04-18 15:09:06,637 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:06,646 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 15:09:06,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:06,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 15:09:06,650 INFO L87 Difference]: Start difference. First operand 400 states and 985 transitions. Second operand 3 states. [2020-04-18 15:09:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:06,664 INFO L93 Difference]: Finished difference Result 600 states and 1401 transitions. [2020-04-18 15:09:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1401 transitions. [2020-04-18 15:09:06,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:09:06,666 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 15:09:06,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:06,666 INFO L82 PathProgramCache]: Analyzing trace with hash 977296348, now seen corresponding path program 6 times [2020-04-18 15:09:06,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:06,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240095846] [2020-04-18 15:09:06,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:06,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240095846] [2020-04-18 15:09:06,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:06,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 15:09:06,754 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:06,756 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:06,762 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 108 transitions. [2020-04-18 15:09:06,762 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:06,827 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 15:09:06,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 15:09:06,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-04-18 15:09:06,827 INFO L87 Difference]: Start difference. First operand 600 states and 1401 transitions. Second operand 8 states. [2020-04-18 15:09:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:06,951 INFO L93 Difference]: Finished difference Result 604 states and 1403 transitions. [2020-04-18 15:09:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1403 transitions. [2020-04-18 15:09:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:09:06,953 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 15:09:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:06,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1202444330, now seen corresponding path program 7 times [2020-04-18 15:09:06,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:06,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155013362] [2020-04-18 15:09:06,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:06,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155013362] [2020-04-18 15:09:06,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:06,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:06,984 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:06,985 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:06,991 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 114 transitions. [2020-04-18 15:09:06,991 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:07,004 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 15:09:07,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 15:09:07,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-04-18 15:09:07,005 INFO L87 Difference]: Start difference. First operand 604 states and 1403 transitions. Second operand 3 states. [2020-04-18 15:09:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:07,015 INFO L93 Difference]: Finished difference Result 1001 states and 2159 transitions. [2020-04-18 15:09:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2159 transitions. [2020-04-18 15:09:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 15:09:07,019 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 15:09:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 15:09:07,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1406991784, now seen corresponding path program 8 times [2020-04-18 15:09:07,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 15:09:07,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503910076] [2020-04-18 15:09:07,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 15:09:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 15:09:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 15:09:07,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503910076] [2020-04-18 15:09:07,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 15:09:07,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 15:09:07,050 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 15:09:07,051 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 15:09:07,057 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 97 transitions. [2020-04-18 15:09:07,057 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 15:09:07,069 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 15:09:07,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 15:09:07,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-04-18 15:09:07,070 INFO L87 Difference]: Start difference. First operand 1001 states and 2159 transitions. Second operand 4 states. [2020-04-18 15:09:07,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:07,097 INFO L93 Difference]: Finished difference Result 1355 states and 2840 transitions. [2020-04-18 15:09:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 2840 transitions. [2020-04-18 15:09:07,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:07,101 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [165316771] [2020-04-18 15:09:07,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 15:09:07,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 15:09:07,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [165316771] [2020-04-18 15:09:07,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-04-18 15:09:07,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 15:09:07,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-04-18 15:09:07,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-04-18 15:09:07,103 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 12 states. [2020-04-18 15:09:07,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 15:09:07,261 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 15:09:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 15:09:07,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-04-18 15:09:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 15:09:07,262 INFO L225 Difference]: With dead ends: 35 [2020-04-18 15:09:07,262 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 15:09:07,262 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-04-18 15:09:07,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 15:09:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 15:09:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 15:09:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 15:09:07,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 15:09:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 15:09:07,263 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 15:09:07,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-04-18 15:09:07,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 15:09:07,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 15:09:07,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:09:07 BasicIcfg [2020-04-18 15:09:07,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 15:09:07,271 INFO L168 Benchmark]: Toolchain (without parser) took 6827.38 ms. Allocated memory was 145.2 MB in the beginning and 284.7 MB in the end (delta: 139.5 MB). Free memory was 102.0 MB in the beginning and 147.7 MB in the end (delta: -45.6 MB). Peak memory consumption was 93.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:09:07,271 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 15:09:07,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.49 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 159.5 MB in the end (delta: -59.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 15:09:07,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.41 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 15:09:07,273 INFO L168 Benchmark]: Boogie Preprocessor took 29.79 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 15:09:07,273 INFO L168 Benchmark]: RCFGBuilder took 479.24 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 134.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 15:09:07,273 INFO L168 Benchmark]: TraceAbstraction took 5550.54 ms. Allocated memory was 202.9 MB in the beginning and 284.7 MB in the end (delta: 81.8 MB). Free memory was 133.5 MB in the beginning and 147.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-04-18 15:09:07,276 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 687.49 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 159.5 MB in the end (delta: -59.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.41 ms. Allocated memory is still 202.9 MB. Free memory was 159.5 MB in the beginning and 157.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.79 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 156.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.24 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 134.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5550.54 ms. Allocated memory was 202.9 MB in the beginning and 284.7 MB in the end (delta: 81.8 MB). Free memory was 133.5 MB in the beginning and 147.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2287 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 156 SDtfs, 205 SDslu, 292 SDs, 0 SdLazy, 204 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 443 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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...