/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:08:54,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:08:54,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:08:54,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:08:54,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:08:54,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:08:54,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:08:54,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:08:54,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:08:54,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:08:54,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:08:54,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:08:54,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:08:54,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:08:54,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:08:54,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:08:54,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:08:54,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:08:54,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:08:54,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:08:54,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:08:54,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:08:54,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:08:54,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:08:54,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:08:54,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:08:54,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:08:54,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:08:54,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:08:54,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:08:54,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:08:54,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:08:54,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:08:54,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:08:54,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:08:54,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:08:54,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:08:54,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:08:54,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:08:54,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:08:54,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:08:54,983 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.epf [2020-04-18 02:08:54,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:08:54,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:08:54,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:08:54,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:08:54,999 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:08:54,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:08:55,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:08:55,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:08:55,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:08:55,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:08:55,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:08:55,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:08:55,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:08:55,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:08:55,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:08:55,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:08:55,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:08:55,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:08:55,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:08:55,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:08:55,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:08:55,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:08:55,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:08:55,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:08:55,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:08:55,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:08:55,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:08:55,004 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:08:55,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:08:55,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:08:55,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:08:55,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:08:55,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:08:55,346 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:08:55,347 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:08:55,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-18 02:08:55,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e1f5872/ecf78ecf3c554173ae2b622d41675936/FLAG4595ad787 [2020-04-18 02:08:55,879 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:08:55,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2020-04-18 02:08:55,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e1f5872/ecf78ecf3c554173ae2b622d41675936/FLAG4595ad787 [2020-04-18 02:08:56,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e1f5872/ecf78ecf3c554173ae2b622d41675936 [2020-04-18 02:08:56,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:08:56,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:08:56,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:08:56,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:08:56,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:08:56,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17865f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56, skipping insertion in model container [2020-04-18 02:08:56,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:08:56,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:08:56,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:08:56,769 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:08:56,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:08:56,922 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:08:56,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56 WrapperNode [2020-04-18 02:08:56,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:08:56,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:08:56,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:08:56,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:08:56,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:08:56,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:08:56,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:08:56,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:08:56,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (1/1) ... [2020-04-18 02:08:56,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:08:56,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:08:56,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:08:56,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:08:56,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (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 02:08:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:08:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:08:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:08:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:08:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:08:57,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:08:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:08:57,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:08:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:08:57,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:08:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:08:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:08:57,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:08:57,061 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 02:08:57,460 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:08:57,460 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:08:57,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:08:57 BoogieIcfgContainer [2020-04-18 02:08:57,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:08:57,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:08:57,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:08:57,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:08:57,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:08:56" (1/3) ... [2020-04-18 02:08:57,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64659292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:08:57, skipping insertion in model container [2020-04-18 02:08:57,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:56" (2/3) ... [2020-04-18 02:08:57,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64659292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:08:57, skipping insertion in model container [2020-04-18 02:08:57,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:08:57" (3/3) ... [2020-04-18 02:08:57,474 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2020-04-18 02:08:57,485 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:08:57,485 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:08:57,492 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:08:57,493 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:08:57,526 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,527 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,527 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,528 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,528 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,529 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,529 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,529 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,530 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,530 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,532 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,533 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,533 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,533 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,534 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,534 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,534 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,535 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,542 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,542 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,542 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,543 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,548 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,549 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,549 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,549 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,551 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,552 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,552 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,552 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:57,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:08:57,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:08:57,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:08:57,587 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:08:57,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:08:57,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:08:57,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:08:57,588 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:08:57,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:08:57,604 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:08:57,606 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:08:57,653 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:08:57,654 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:08:57,662 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:08:57,665 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:08:57,687 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:08:57,688 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:08:57,688 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:08:57,690 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:08:57,692 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:08:59,227 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:08:59,297 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 02:08:59,298 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:08:59,302 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:08:59,328 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:08:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:08:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:08:59,339 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:59,340 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:59,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:59,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:59,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 02:08:59,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:59,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599528957] [2020-04-18 02:08:59,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:59,585 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 02:08:59,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599528957] [2020-04-18 02:08:59,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:59,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:08:59,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039639039] [2020-04-18 02:08:59,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:08:59,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:59,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:08:59,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:08:59,611 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:08:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:59,659 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:08:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:08:59,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:08:59,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:59,701 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:08:59,701 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:08:59,703 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 02:08:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:08:59,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:08:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:08:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:08:59,767 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:08:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:59,768 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:08:59,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:08:59,768 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:08:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:08:59,770 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:59,770 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:59,770 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:59,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-04-18 02:08:59,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:59,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489905865] [2020-04-18 02:08:59,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:59,863 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 02:08:59,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489905865] [2020-04-18 02:08:59,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:59,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:08:59,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771012925] [2020-04-18 02:08:59,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:08:59,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:59,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:08:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:08:59,867 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 02:08:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:59,899 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 02:08:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:08:59,900 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:08:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:59,902 INFO L225 Difference]: With dead ends: 254 [2020-04-18 02:08:59,903 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 02:08:59,903 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 02:08:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 02:08:59,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 02:08:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 02:08:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 02:08:59,936 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 02:08:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:59,936 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 02:08:59,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:08:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 02:08:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:08:59,938 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:59,938 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:59,938 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:59,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-04-18 02:08:59,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:59,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451641540] [2020-04-18 02:08:59,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:09:00,015 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 02:09:00,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451641540] [2020-04-18 02:09:00,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:09:00,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:09:00,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854775536] [2020-04-18 02:09:00,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:09:00,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:09:00,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:09:00,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:09:00,019 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-04-18 02:09:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:09:00,054 INFO L93 Difference]: Finished difference Result 262 states and 670 transitions. [2020-04-18 02:09:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:09:00,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:09:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:09:00,058 INFO L225 Difference]: With dead ends: 262 [2020-04-18 02:09:00,058 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:09:00,058 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:09:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:09:00,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-04-18 02:09:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 02:09:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-04-18 02:09:00,079 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-04-18 02:09:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:09:00,080 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-04-18 02:09:00,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:09:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-04-18 02:09:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:09:00,085 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:09:00,085 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:09:00,085 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:09:00,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:09:00,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-04-18 02:09:00,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:09:00,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409003313] [2020-04-18 02:09:00,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:09:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:09:00,136 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 02:09:00,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409003313] [2020-04-18 02:09:00,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:09:00,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:09:00,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602064617] [2020-04-18 02:09:00,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:09:00,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:09:00,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:09:00,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:09:00,138 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 3 states. [2020-04-18 02:09:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:09:00,153 INFO L93 Difference]: Finished difference Result 198 states and 492 transitions. [2020-04-18 02:09:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:09:00,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:09:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:09:00,155 INFO L225 Difference]: With dead ends: 198 [2020-04-18 02:09:00,155 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 02:09:00,155 INFO L678 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 [2020-04-18 02:09:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 02:09:00,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 02:09:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 02:09:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-18 02:09:00,161 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-18 02:09:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:09:00,161 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-18 02:09:00,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:09:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-18 02:09:00,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:09:00,162 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:09:00,162 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:09:00,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:09:00,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:09:00,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-04-18 02:09:00,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:09:00,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927540517] [2020-04-18 02:09:00,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:09:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:09:00,230 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 02:09:00,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927540517] [2020-04-18 02:09:00,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:09:00,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:09:00,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144794389] [2020-04-18 02:09:00,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:09:00,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:09:00,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:09:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:09:00,233 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-04-18 02:09:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:09:00,271 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-18 02:09:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:09:00,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:09:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:09:00,273 INFO L225 Difference]: With dead ends: 85 [2020-04-18 02:09:00,273 INFO L226 Difference]: Without dead ends: 61 [2020-04-18 02:09:00,276 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 02:09:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-18 02:09:00,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-18 02:09:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-18 02:09:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-18 02:09:00,287 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-18 02:09:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:09:00,287 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-18 02:09:00,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:09:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-18 02:09:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:09:00,288 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:09:00,288 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:09:00,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:09:00,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:09:00,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-04-18 02:09:00,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:09:00,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601994694] [2020-04-18 02:09:00,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:09:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:09:00,390 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 02:09:00,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601994694] [2020-04-18 02:09:00,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:09:00,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:09:00,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848789040] [2020-04-18 02:09:00,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:09:00,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:09:00,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:09:00,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:09:00,392 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-04-18 02:09:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:09:00,448 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-18 02:09:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:09:00,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:09:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:09:00,450 INFO L225 Difference]: With dead ends: 62 [2020-04-18 02:09:00,450 INFO L226 Difference]: Without dead ends: 47 [2020-04-18 02:09:00,451 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:09:00,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-18 02:09:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-18 02:09:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-18 02:09:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-18 02:09:00,460 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-18 02:09:00,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:09:00,460 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-18 02:09:00,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:09:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 02:09:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:09:00,461 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:09:00,461 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:09:00,462 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:09:00,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:09:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-04-18 02:09:00,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:09:00,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440871396] [2020-04-18 02:09:00,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:09:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:09:00,554 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 02:09:00,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440871396] [2020-04-18 02:09:00,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:09:00,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:09:00,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988284001] [2020-04-18 02:09:00,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:09:00,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:09:00,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:09:00,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:09:00,557 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-04-18 02:09:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:09:00,613 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-18 02:09:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:09:00,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:09:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:09:00,614 INFO L225 Difference]: With dead ends: 44 [2020-04-18 02:09:00,614 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 02:09:00,615 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:09:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 02:09:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 02:09:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 02:09:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-18 02:09:00,622 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-18 02:09:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:09:00,623 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-18 02:09:00,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:09:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-18 02:09:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:09:00,626 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:09:00,626 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 02:09:00,626 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:09:00,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:09:00,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-04-18 02:09:00,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:09:00,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363590541] [2020-04-18 02:09:00,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:09:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:09:00,683 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 02:09:00,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363590541] [2020-04-18 02:09:00,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:09:00,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:09:00,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997116433] [2020-04-18 02:09:00,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:09:00,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:09:00,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:09:00,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:09:00,685 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-04-18 02:09:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:09:00,708 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-18 02:09:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:09:00,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:09:00,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:09:00,709 INFO L225 Difference]: With dead ends: 37 [2020-04-18 02:09:00,709 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:09:00,709 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 02:09:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:09:00,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:09:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:09:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:09:00,711 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:09:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:09:00,711 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:09:00,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:09:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:09:00,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:09:00,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:09:00 BasicIcfg [2020-04-18 02:09:00,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:09:00,723 INFO L168 Benchmark]: Toolchain (without parser) took 4553.45 ms. Allocated memory was 144.7 MB in the beginning and 249.6 MB in the end (delta: 104.9 MB). Free memory was 101.4 MB in the beginning and 209.8 MB in the end (delta: -108.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:09:00,724 INFO L168 Benchmark]: CDTParser took 1.32 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-18 02:09:00,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.07 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 99.6 MB in the beginning and 160.7 MB in the end (delta: -61.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:09:00,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.26 ms. Allocated memory is still 202.9 MB. Free memory was 160.7 MB in the beginning and 158.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:09:00,729 INFO L168 Benchmark]: Boogie Preprocessor took 24.62 ms. Allocated memory is still 202.9 MB. Free memory was 158.6 MB in the beginning and 156.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 02:09:00,732 INFO L168 Benchmark]: RCFGBuilder took 466.90 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 134.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-18 02:09:00,733 INFO L168 Benchmark]: TraceAbstraction took 3250.12 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 134.1 MB in the beginning and 209.8 MB in the end (delta: -75.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:09:00,743 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.07 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 99.6 MB in the beginning and 160.7 MB in the end (delta: -61.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.26 ms. Allocated memory is still 202.9 MB. Free memory was 160.7 MB in the beginning and 158.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.62 ms. Allocated memory is still 202.9 MB. Free memory was 158.6 MB in the beginning and 156.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.90 ms. Allocated memory is still 202.9 MB. Free memory was 156.5 MB in the beginning and 134.1 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3250.12 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 134.1 MB in the beginning and 209.8 MB in the end (delta: -75.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 158 SDtfs, 118 SDslu, 158 SDs, 0 SdLazy, 116 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2980 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...