/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:15:17,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:15:17,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:15:17,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:15:17,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:15:17,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:15:17,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:15:17,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:15:17,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:15:17,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:15:17,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:15:17,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:15:17,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:15:17,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:15:17,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:15:17,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:15:17,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:15:17,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:15:17,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:15:17,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:15:17,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:15:17,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:15:17,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:15:17,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:15:17,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:15:17,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:15:17,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:15:17,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:15:17,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:15:17,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:15:17,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:15:17,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:15:17,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:15:17,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:15:17,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:15:17,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:15:17,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:15:17,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:15:17,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:15:17,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:15:17,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:15:17,952 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-SemanticLbe.epf [2020-04-17 22:15:17,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:15:17,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:15:17,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:15:17,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:15:17,969 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:15:17,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:15:17,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:15:17,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:15:17,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:15:17,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:15:17,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:15:17,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:15:17,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:15:17,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:15:17,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:15:17,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:15:17,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:15:17,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:15:17,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:15:17,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:15:17,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:15:17,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:15:17,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:15:17,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:15:17,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:15:17,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:15:17,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:15:17,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:15:17,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:15:18,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:15:18,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:15:18,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:15:18,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:15:18,336 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:15:18,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-04-17 22:15:18,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249cf05fe/a56ece81617f406aac541f465d691c82/FLAG17b838145 [2020-04-17 22:15:18,955 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:15:18,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.opt.i [2020-04-17 22:15:18,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249cf05fe/a56ece81617f406aac541f465d691c82/FLAG17b838145 [2020-04-17 22:15:19,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249cf05fe/a56ece81617f406aac541f465d691c82 [2020-04-17 22:15:19,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:15:19,264 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:15:19,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:15:19,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:15:19,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:15:19,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:19,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff0bbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19, skipping insertion in model container [2020-04-17 22:15:19,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:19,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:15:19,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:15:19,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:15:19,850 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:15:19,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:15:19,997 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:15:19,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19 WrapperNode [2020-04-17 22:15:19,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:15:19,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:15:19,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:15:19,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:15:20,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:15:20,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:15:20,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:15:20,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:15:20,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (1/1) ... [2020-04-17 22:15:20,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:15:20,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:15:20,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:15:20,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:15:20,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (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 [2020-04-17 22:15:20,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:15:20,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:15:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:15:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:15:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:15:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:15:20,149 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:15:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:15:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:15:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:15:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:15:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:15:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:15:20,152 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 22:15:20,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:15:20,535 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:15:20,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:15:20 BoogieIcfgContainer [2020-04-17 22:15:20,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:15:20,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:15:20,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:15:20,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:15:20,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:15:19" (1/3) ... [2020-04-17 22:15:20,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16951e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:15:20, skipping insertion in model container [2020-04-17 22:15:20,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:15:19" (2/3) ... [2020-04-17 22:15:20,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16951e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:15:20, skipping insertion in model container [2020-04-17 22:15:20,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:15:20" (3/3) ... [2020-04-17 22:15:20,549 INFO L109 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-04-17 22:15:20,561 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:15:20,562 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:15:20,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:15:20,569 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:15:20,596 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,597 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,597 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,598 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,598 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,598 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,599 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,599 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,600 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,600 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,600 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,601 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,601 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,601 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,601 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,602 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,602 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,602 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,607 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,607 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,607 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,608 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,613 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,614 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,614 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,614 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,618 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,618 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,618 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,618 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:15:20,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:15:20,659 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:15:20,660 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:15:20,660 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:15:20,660 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:15:20,660 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:15:20,660 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:15:20,661 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:15:20,661 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:15:20,679 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:15:20,681 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:15:20,729 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:15:20,729 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:15:20,738 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 46 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. [2020-04-17 22:15:20,744 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:15:20,776 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:15:20,777 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:15:20,777 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 46 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. [2020-04-17 22:15:20,779 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:15:20,781 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:15:22,385 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2250 [2020-04-17 22:15:22,385 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-04-17 22:15:22,389 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 22:15:22,418 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 22:15:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 22:15:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:15:22,429 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:22,430 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:22,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:22,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-04-17 22:15:22,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:22,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961267309] [2020-04-17 22:15:22,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:22,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961267309] [2020-04-17 22:15:22,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:22,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:15:22,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233127920] [2020-04-17 22:15:22,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:15:22,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:22,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:15:22,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:15:22,686 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 22:15:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:22,739 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 22:15:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:15:22,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 22:15:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:22,786 INFO L225 Difference]: With dead ends: 362 [2020-04-17 22:15:22,786 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 22:15:22,788 INFO L678 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 [2020-04-17 22:15:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 22:15:22,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 22:15:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 22:15:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 22:15:22,894 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 22:15:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:22,895 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 22:15:22,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:15:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 22:15:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:15:22,896 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:22,897 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:22,897 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:22,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:22,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-04-17 22:15:22,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:22,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153145171] [2020-04-17 22:15:22,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:23,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153145171] [2020-04-17 22:15:23,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:23,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:15:23,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853061425] [2020-04-17 22:15:23,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:15:23,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:23,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:15:23,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:15:23,094 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 5 states. [2020-04-17 22:15:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:23,204 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 22:15:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:15:23,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-04-17 22:15:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:23,208 INFO L225 Difference]: With dead ends: 330 [2020-04-17 22:15:23,208 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 22:15:23,209 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:15:23,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 22:15:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 22:15:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 22:15:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 22:15:23,226 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 22:15:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:23,227 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 22:15:23,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:15:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 22:15:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:15:23,228 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:23,228 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:23,229 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:23,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:23,229 INFO L82 PathProgramCache]: Analyzing trace with hash -397698604, now seen corresponding path program 1 times [2020-04-17 22:15:23,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:23,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289889851] [2020-04-17 22:15:23,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:23,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289889851] [2020-04-17 22:15:23,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:23,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:15:23,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977854685] [2020-04-17 22:15:23,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:15:23,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:23,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:15:23,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:15:23,335 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-04-17 22:15:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:23,460 INFO L93 Difference]: Finished difference Result 338 states and 914 transitions. [2020-04-17 22:15:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:15:23,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-17 22:15:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:23,463 INFO L225 Difference]: With dead ends: 338 [2020-04-17 22:15:23,464 INFO L226 Difference]: Without dead ends: 194 [2020-04-17 22:15:23,464 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 22:15:23,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-17 22:15:23,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-17 22:15:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-17 22:15:23,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 494 transitions. [2020-04-17 22:15:23,473 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 494 transitions. Word has length 10 [2020-04-17 22:15:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:23,473 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 494 transitions. [2020-04-17 22:15:23,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:15:23,473 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 494 transitions. [2020-04-17 22:15:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:15:23,475 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:23,475 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:23,475 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:23,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:23,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1820296279, now seen corresponding path program 1 times [2020-04-17 22:15:23,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:23,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293555511] [2020-04-17 22:15:23,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:23,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293555511] [2020-04-17 22:15:23,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:23,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:15:23,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026954071] [2020-04-17 22:15:23,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:15:23,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:23,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:15:23,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:15:23,566 INFO L87 Difference]: Start difference. First operand 194 states and 494 transitions. Second operand 4 states. [2020-04-17 22:15:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:23,601 INFO L93 Difference]: Finished difference Result 213 states and 497 transitions. [2020-04-17 22:15:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:15:23,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:15:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:23,603 INFO L225 Difference]: With dead ends: 213 [2020-04-17 22:15:23,603 INFO L226 Difference]: Without dead ends: 167 [2020-04-17 22:15:23,603 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 [2020-04-17 22:15:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-04-17 22:15:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2020-04-17 22:15:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-04-17 22:15:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 392 transitions. [2020-04-17 22:15:23,609 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 392 transitions. Word has length 12 [2020-04-17 22:15:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:23,610 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 392 transitions. [2020-04-17 22:15:23,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:15:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 392 transitions. [2020-04-17 22:15:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:15:23,611 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:23,612 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:23,612 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:23,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:23,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1114555336, now seen corresponding path program 1 times [2020-04-17 22:15:23,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:23,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753065426] [2020-04-17 22:15:23,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:23,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753065426] [2020-04-17 22:15:23,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:23,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:15:23,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134908662] [2020-04-17 22:15:23,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:15:23,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:23,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:15:23,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:15:23,698 INFO L87 Difference]: Start difference. First operand 167 states and 392 transitions. Second operand 5 states. [2020-04-17 22:15:23,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:23,748 INFO L93 Difference]: Finished difference Result 147 states and 311 transitions. [2020-04-17 22:15:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:15:23,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 22:15:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:23,752 INFO L225 Difference]: With dead ends: 147 [2020-04-17 22:15:23,753 INFO L226 Difference]: Without dead ends: 116 [2020-04-17 22:15:23,753 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:15:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-04-17 22:15:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-04-17 22:15:23,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-04-17 22:15:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 239 transitions. [2020-04-17 22:15:23,764 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 239 transitions. Word has length 13 [2020-04-17 22:15:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:23,764 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 239 transitions. [2020-04-17 22:15:23,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:15:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 239 transitions. [2020-04-17 22:15:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:15:23,767 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:23,767 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:23,768 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:23,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:23,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1420096236, now seen corresponding path program 1 times [2020-04-17 22:15:23,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:23,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342796433] [2020-04-17 22:15:23,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:23,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:23,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342796433] [2020-04-17 22:15:23,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:23,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-17 22:15:23,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746801771] [2020-04-17 22:15:23,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:15:23,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:23,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:15:23,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:15:23,895 INFO L87 Difference]: Start difference. First operand 116 states and 239 transitions. Second operand 6 states. [2020-04-17 22:15:23,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:23,942 INFO L93 Difference]: Finished difference Result 101 states and 207 transitions. [2020-04-17 22:15:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:15:23,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 22:15:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:23,943 INFO L225 Difference]: With dead ends: 101 [2020-04-17 22:15:23,943 INFO L226 Difference]: Without dead ends: 91 [2020-04-17 22:15:23,943 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:15:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-04-17 22:15:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-04-17 22:15:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-04-17 22:15:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 189 transitions. [2020-04-17 22:15:23,947 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 189 transitions. Word has length 15 [2020-04-17 22:15:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:23,947 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 189 transitions. [2020-04-17 22:15:23,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:15:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 189 transitions. [2020-04-17 22:15:23,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:15:23,951 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:23,951 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:23,951 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:23,952 INFO L82 PathProgramCache]: Analyzing trace with hash -572692364, now seen corresponding path program 1 times [2020-04-17 22:15:23,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:23,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967368708] [2020-04-17 22:15:23,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:24,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967368708] [2020-04-17 22:15:24,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:24,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:15:24,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813327201] [2020-04-17 22:15:24,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:15:24,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:24,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:15:24,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:15:24,030 INFO L87 Difference]: Start difference. First operand 91 states and 189 transitions. Second operand 4 states. [2020-04-17 22:15:24,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:24,057 INFO L93 Difference]: Finished difference Result 126 states and 254 transitions. [2020-04-17 22:15:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:15:24,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-04-17 22:15:24,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:24,059 INFO L225 Difference]: With dead ends: 126 [2020-04-17 22:15:24,059 INFO L226 Difference]: Without dead ends: 61 [2020-04-17 22:15:24,059 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 [2020-04-17 22:15:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-17 22:15:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-17 22:15:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-17 22:15:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 111 transitions. [2020-04-17 22:15:24,062 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 111 transitions. Word has length 18 [2020-04-17 22:15:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:24,062 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 111 transitions. [2020-04-17 22:15:24,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:15:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 111 transitions. [2020-04-17 22:15:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:15:24,063 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:24,063 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:24,063 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:24,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:24,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1469301908, now seen corresponding path program 2 times [2020-04-17 22:15:24,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:24,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65963622] [2020-04-17 22:15:24,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:24,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:24,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65963622] [2020-04-17 22:15:24,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:24,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:15:24,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178053094] [2020-04-17 22:15:24,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:15:24,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:24,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:15:24,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:15:24,136 INFO L87 Difference]: Start difference. First operand 61 states and 111 transitions. Second operand 5 states. [2020-04-17 22:15:24,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:24,164 INFO L93 Difference]: Finished difference Result 69 states and 120 transitions. [2020-04-17 22:15:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:15:24,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:15:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:24,165 INFO L225 Difference]: With dead ends: 69 [2020-04-17 22:15:24,165 INFO L226 Difference]: Without dead ends: 55 [2020-04-17 22:15:24,165 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:15:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-04-17 22:15:24,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-04-17 22:15:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-04-17 22:15:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-04-17 22:15:24,167 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-04-17 22:15:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:24,167 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-04-17 22:15:24,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:15:24,168 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-04-17 22:15:24,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:15:24,168 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:15:24,168 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:15:24,168 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:15:24,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:15:24,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 3 times [2020-04-17 22:15:24,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:15:24,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787629040] [2020-04-17 22:15:24,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:15:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:15:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:15:24,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787629040] [2020-04-17 22:15:24,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:15:24,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:15:24,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772028590] [2020-04-17 22:15:24,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:15:24,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:15:24,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:15:24,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:15:24,214 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 5 states. [2020-04-17 22:15:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:15:24,237 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-04-17 22:15:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:15:24,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:15:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:15:24,238 INFO L225 Difference]: With dead ends: 54 [2020-04-17 22:15:24,238 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:15:24,238 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-04-17 22:15:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:15:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:15:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:15:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:15:24,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 22:15:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:15:24,239 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:15:24,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:15:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:15:24,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:15:24,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:15:24 BasicIcfg [2020-04-17 22:15:24,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:15:24,246 INFO L168 Benchmark]: Toolchain (without parser) took 5002.85 ms. Allocated memory was 144.2 MB in the beginning and 249.6 MB in the end (delta: 105.4 MB). Free memory was 100.5 MB in the beginning and 167.5 MB in the end (delta: -67.0 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:15:24,247 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 22:15:24,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.28 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 98.8 MB in the beginning and 159.3 MB in the end (delta: -60.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:15:24,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.75 ms. Allocated memory is still 202.4 MB. Free memory was 159.3 MB in the beginning and 157.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:15:24,250 INFO L168 Benchmark]: Boogie Preprocessor took 27.70 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 155.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:15:24,251 INFO L168 Benchmark]: RCFGBuilder took 463.38 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 133.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:15:24,252 INFO L168 Benchmark]: TraceAbstraction took 3702.52 ms. Allocated memory was 202.4 MB in the beginning and 249.6 MB in the end (delta: 47.2 MB). Free memory was 132.9 MB in the beginning and 167.5 MB in the end (delta: -34.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-04-17 22:15:24,256 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.28 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 98.8 MB in the beginning and 159.3 MB in the end (delta: -60.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.75 ms. Allocated memory is still 202.4 MB. Free memory was 159.3 MB in the beginning and 157.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.70 ms. Allocated memory is still 202.4 MB. Free memory was 157.0 MB in the beginning and 155.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.38 ms. Allocated memory is still 202.4 MB. Free memory was 155.7 MB in the beginning and 133.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3702.52 ms. Allocated memory was 202.4 MB in the beginning and 249.6 MB in the end (delta: 47.2 MB). Free memory was 132.9 MB in the beginning and 167.5 MB in the end (delta: -34.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 78 ProgramPointsBefore, 32 ProgramPointsAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 2250 CheckedPairsTotal, 55 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: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 181 SDtfs, 235 SDslu, 340 SDs, 0 SdLazy, 163 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 4617 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...