/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:10:57,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:10:57,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:10:57,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:10:57,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:10:57,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:10:57,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:10:57,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:10:57,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:10:57,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:10:57,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:10:57,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:10:57,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:10:57,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:10:57,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:10:57,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:10:57,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:10:57,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:10:57,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:10:57,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:10:57,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:10:57,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:10:57,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:10:57,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:10:57,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:10:57,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:10:57,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:10:57,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:10:57,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:10:57,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:10:57,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:10:57,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:10:57,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:10:57,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:10:57,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:10:57,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:10:57,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:10:57,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:10:57,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:10:57,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:10:57,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:10:57,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:10:57,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:10:57,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:10:57,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:10:57,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:10:57,241 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:10:57,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:10:57,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:10:57,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:10:57,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:10:57,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:10:57,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:10:57,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:10:57,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:10:57,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:10:57,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:10:57,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:10:57,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:10:57,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:10:57,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:10:57,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:10:57,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:10:57,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:10:57,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:10:57,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:10:57,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:10:57,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:10:57,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:10:57,247 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:10:57,247 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:10:57,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:10:57,248 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:10:57,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:10:57,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:10:57,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:10:57,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:10:57,586 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:10:57,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-22 02:10:57,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb20c40f/2b280258a11c43f68878af0af72f5d8c/FLAG6f7563b6d [2020-10-22 02:10:58,165 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:10:58,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-22 02:10:58,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb20c40f/2b280258a11c43f68878af0af72f5d8c/FLAG6f7563b6d [2020-10-22 02:10:58,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb20c40f/2b280258a11c43f68878af0af72f5d8c [2020-10-22 02:10:58,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:10:58,510 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:10:58,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:10:58,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:10:58,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:10:58,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:10:58" (1/1) ... [2020-10-22 02:10:58,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25adfd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:58, skipping insertion in model container [2020-10-22 02:10:58,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:10:58" (1/1) ... [2020-10-22 02:10:58,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:10:58,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:10:59,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:10:59,226 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:10:59,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:10:59,366 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:10:59,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59 WrapperNode [2020-10-22 02:10:59,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:10:59,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:10:59,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:10:59,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:10:59,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:10:59,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:10:59,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:10:59,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:10:59,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (1/1) ... [2020-10-22 02:10:59,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:10:59,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:10:59,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:10:59,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:10:59,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (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 [2020-10-22 02:10:59,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:10:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:10:59,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:10:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:10:59,529 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:10:59,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:10:59,530 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:10:59,530 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:10:59,531 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:10:59,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:10:59,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:10:59,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:10:59,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:10:59,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:10:59,535 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:10:59,970 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:10:59,971 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:10:59,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:10:59 BoogieIcfgContainer [2020-10-22 02:10:59,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:10:59,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:10:59,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:10:59,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:10:59,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:10:58" (1/3) ... [2020-10-22 02:10:59,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d267828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:10:59, skipping insertion in model container [2020-10-22 02:10:59,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:10:59" (2/3) ... [2020-10-22 02:10:59,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d267828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:10:59, skipping insertion in model container [2020-10-22 02:10:59,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:10:59" (3/3) ... [2020-10-22 02:10:59,983 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-10-22 02:10:59,996 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:10:59,996 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:11:00,005 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:11:00,006 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:11:00,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,040 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,040 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,041 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,041 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,042 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,042 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,043 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,043 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,043 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,044 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,044 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,045 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,045 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,046 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,059 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,059 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,062 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,062 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,063 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:11:00,065 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:11:00,081 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:11:00,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:11:00,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:11:00,106 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:11:00,106 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:11:00,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:11:00,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:11:00,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:11:00,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:11:00,122 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:11:00,123 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:11:00,126 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:11:00,129 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 02:11:00,201 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 02:11:00,201 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:11:00,208 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 02:11:00,214 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 02:11:01,878 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-22 02:11:01,993 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-10-22 02:11:01,993 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-10-22 02:11:02,002 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-22 02:11:02,050 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-22 02:11:02,053 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-22 02:11:02,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:11:02,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:02,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:02,087 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:02,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-10-22 02:11:02,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:02,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207231669] [2020-10-22 02:11:02,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:02,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207231669] [2020-10-22 02:11:02,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:02,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:11:02,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1625217634] [2020-10-22 02:11:02,308 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:02,311 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:02,326 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:11:02,326 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:02,331 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:02,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:11:02,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:02,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:11:02,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:11:02,346 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-22 02:11:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:02,370 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-22 02:11:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:11:02,372 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-22 02:11:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:02,389 INFO L225 Difference]: With dead ends: 362 [2020-10-22 02:11:02,390 INFO L226 Difference]: Without dead ends: 298 [2020-10-22 02:11:02,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:11:02,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-22 02:11:02,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-22 02:11:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-22 02:11:02,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-22 02:11:02,470 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-22 02:11:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:02,471 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-22 02:11:02,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:11:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-22 02:11:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:11:02,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:02,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:02,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:11:02,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:02,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-10-22 02:11:02,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:02,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863050931] [2020-10-22 02:11:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:02,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863050931] [2020-10-22 02:11:02,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:02,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:11:02,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [931708310] [2020-10-22 02:11:02,602 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:02,603 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:02,605 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:11:02,605 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:02,606 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:02,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:11:02,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:02,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:11:02,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:11:02,609 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-10-22 02:11:02,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:02,626 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-10-22 02:11:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:11:02,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-22 02:11:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:02,630 INFO L225 Difference]: With dead ends: 217 [2020-10-22 02:11:02,630 INFO L226 Difference]: Without dead ends: 217 [2020-10-22 02:11:02,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:11:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-22 02:11:02,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-10-22 02:11:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-22 02:11:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-10-22 02:11:02,653 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-10-22 02:11:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:02,654 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-10-22 02:11:02,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:11:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-10-22 02:11:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:11:02,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:02,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:02,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:11:02,657 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:02,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:02,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-10-22 02:11:02,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:02,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401297203] [2020-10-22 02:11:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:02,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401297203] [2020-10-22 02:11:02,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:02,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:02,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1806971610] [2020-10-22 02:11:02,729 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:02,730 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:02,734 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-10-22 02:11:02,734 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:02,908 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2430#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:11:02,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:11:02,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:02,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:11:02,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:02,910 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-10-22 02:11:02,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:02,947 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-10-22 02:11:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:11:02,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 02:11:02,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:02,950 INFO L225 Difference]: With dead ends: 136 [2020-10-22 02:11:02,950 INFO L226 Difference]: Without dead ends: 136 [2020-10-22 02:11:02,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:02,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-22 02:11:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-22 02:11:02,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-22 02:11:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-10-22 02:11:02,975 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-10-22 02:11:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:02,976 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-10-22 02:11:02,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:11:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-10-22 02:11:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:11:02,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:02,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:02,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:11:02,978 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:02,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:02,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-10-22 02:11:02,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:02,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183866708] [2020-10-22 02:11:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:03,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183866708] [2020-10-22 02:11:03,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:03,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:11:03,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [965516870] [2020-10-22 02:11:03,062 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:03,064 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:03,070 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 85 transitions. [2020-10-22 02:11:03,070 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:03,370 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2844#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:11:03,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:11:03,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:11:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:11:03,371 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-10-22 02:11:03,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:03,411 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-10-22 02:11:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:03,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-22 02:11:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:03,413 INFO L225 Difference]: With dead ends: 109 [2020-10-22 02:11:03,413 INFO L226 Difference]: Without dead ends: 109 [2020-10-22 02:11:03,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:11:03,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-22 02:11:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-22 02:11:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-22 02:11:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-10-22 02:11:03,420 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-10-22 02:11:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:03,421 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-10-22 02:11:03,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:11:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-10-22 02:11:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:11:03,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:03,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:03,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:11:03,423 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:03,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-10-22 02:11:03,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:03,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199072225] [2020-10-22 02:11:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:03,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199072225] [2020-10-22 02:11:03,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:03,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:03,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1698360865] [2020-10-22 02:11:03,504 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:03,506 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:03,516 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 105 transitions. [2020-10-22 02:11:03,516 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:03,554 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:03,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:11:03,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:03,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:11:03,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:11:03,555 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-10-22 02:11:03,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:03,584 INFO L93 Difference]: Finished difference Result 127 states and 273 transitions. [2020-10-22 02:11:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:11:03,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-22 02:11:03,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:03,585 INFO L225 Difference]: With dead ends: 127 [2020-10-22 02:11:03,585 INFO L226 Difference]: Without dead ends: 93 [2020-10-22 02:11:03,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-22 02:11:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-22 02:11:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-22 02:11:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 199 transitions. [2020-10-22 02:11:03,592 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 199 transitions. Word has length 18 [2020-10-22 02:11:03,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:03,592 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 199 transitions. [2020-10-22 02:11:03,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:11:03,592 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 199 transitions. [2020-10-22 02:11:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:11:03,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:03,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:03,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:11:03,594 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:03,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:03,594 INFO L82 PathProgramCache]: Analyzing trace with hash -17726670, now seen corresponding path program 2 times [2020-10-22 02:11:03,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:03,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248371829] [2020-10-22 02:11:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:03,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248371829] [2020-10-22 02:11:03,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:03,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:03,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [908735261] [2020-10-22 02:11:03,670 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:03,673 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:03,685 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 104 transitions. [2020-10-22 02:11:03,685 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:03,975 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:03,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:11:03,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:03,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:11:03,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:03,977 INFO L87 Difference]: Start difference. First operand 93 states and 199 transitions. Second operand 5 states. [2020-10-22 02:11:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:04,013 INFO L93 Difference]: Finished difference Result 119 states and 247 transitions. [2020-10-22 02:11:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:04,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-22 02:11:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:04,015 INFO L225 Difference]: With dead ends: 119 [2020-10-22 02:11:04,015 INFO L226 Difference]: Without dead ends: 85 [2020-10-22 02:11:04,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:11:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-22 02:11:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-22 02:11:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-22 02:11:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-10-22 02:11:04,020 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 18 [2020-10-22 02:11:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:04,021 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-10-22 02:11:04,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:11:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-10-22 02:11:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:11:04,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:04,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:04,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:11:04,022 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash 129745538, now seen corresponding path program 3 times [2020-10-22 02:11:04,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:04,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154665280] [2020-10-22 02:11:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:04,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154665280] [2020-10-22 02:11:04,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:04,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:04,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1463159231] [2020-10-22 02:11:04,133 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:04,135 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:04,147 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 90 transitions. [2020-10-22 02:11:04,148 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:04,401 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:04,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:11:04,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:04,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:11:04,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:11:04,403 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 5 states. [2020-10-22 02:11:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:04,452 INFO L93 Difference]: Finished difference Result 123 states and 251 transitions. [2020-10-22 02:11:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:11:04,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-22 02:11:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:04,454 INFO L225 Difference]: With dead ends: 123 [2020-10-22 02:11:04,454 INFO L226 Difference]: Without dead ends: 61 [2020-10-22 02:11:04,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:11:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-22 02:11:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-22 02:11:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-22 02:11:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 117 transitions. [2020-10-22 02:11:04,461 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 117 transitions. Word has length 18 [2020-10-22 02:11:04,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:04,461 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 117 transitions. [2020-10-22 02:11:04,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:11:04,461 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 117 transitions. [2020-10-22 02:11:04,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-22 02:11:04,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:11:04,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:11:04,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:11:04,467 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:11:04,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:11:04,468 INFO L82 PathProgramCache]: Analyzing trace with hash -898209114, now seen corresponding path program 4 times [2020-10-22 02:11:04,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:11:04,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893787764] [2020-10-22 02:11:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:11:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:11:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:11:04,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893787764] [2020-10-22 02:11:04,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:11:04,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:11:04,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [345279982] [2020-10-22 02:11:04,552 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:11:04,554 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:11:04,558 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 44 transitions. [2020-10-22 02:11:04,559 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:11:04,599 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:11:04,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:11:04,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:11:04,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:11:04,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:11:04,600 INFO L87 Difference]: Start difference. First operand 61 states and 117 transitions. Second operand 4 states. [2020-10-22 02:11:04,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:11:04,614 INFO L93 Difference]: Finished difference Result 60 states and 116 transitions. [2020-10-22 02:11:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:11:04,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-22 02:11:04,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:11:04,615 INFO L225 Difference]: With dead ends: 60 [2020-10-22 02:11:04,615 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:11:04,616 INFO L677 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 [2020-10-22 02:11:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:11:04,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:11:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:11:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:11:04,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-22 02:11:04,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:11:04,617 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:11:04,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:11:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:11:04,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:11:04,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:11:04,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:11:04 BasicIcfg [2020-10-22 02:11:04,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:11:04,630 INFO L168 Benchmark]: Toolchain (without parser) took 6118.89 ms. Allocated memory was 140.0 MB in the beginning and 286.3 MB in the end (delta: 146.3 MB). Free memory was 101.7 MB in the beginning and 167.5 MB in the end (delta: -65.8 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:04,631 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 02:11:04,633 INFO L168 Benchmark]: CACSL2BoogieTranslator took 863.28 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 157.8 MB in the end (delta: -57.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:04,634 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.07 ms. Allocated memory is still 203.9 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:04,635 INFO L168 Benchmark]: Boogie Preprocessor took 29.26 ms. Allocated memory is still 203.9 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:04,638 INFO L168 Benchmark]: RCFGBuilder took 517.57 ms. Allocated memory is still 203.9 MB. Free memory was 153.8 MB in the beginning and 130.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:04,639 INFO L168 Benchmark]: TraceAbstraction took 4647.92 ms. Allocated memory was 203.9 MB in the beginning and 286.3 MB in the end (delta: 82.3 MB). Free memory was 129.8 MB in the beginning and 167.5 MB in the end (delta: -37.6 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-10-22 02:11:04,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 863.28 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.8 MB in the beginning and 157.8 MB in the end (delta: -57.0 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.07 ms. Allocated memory is still 203.9 MB. Free memory was 157.8 MB in the beginning and 155.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.26 ms. Allocated memory is still 203.9 MB. Free memory was 155.8 MB in the beginning and 154.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 517.57 ms. Allocated memory is still 203.9 MB. Free memory was 153.8 MB in the beginning and 130.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4647.92 ms. Allocated memory was 203.9 MB in the beginning and 286.3 MB in the end (delta: 82.3 MB). Free memory was 129.8 MB in the beginning and 167.5 MB in the end (delta: -37.6 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 778 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 MoverChecksTotal - PositiveResult [Line: 17]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 140 SDtfs, 71 SDslu, 208 SDs, 0 SdLazy, 81 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...