/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/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:21:22,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:21:22,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:21:23,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:21:23,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:21:23,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:21:23,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:21:23,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:21:23,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:21:23,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:21:23,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:21:23,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:21:23,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:21:23,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:21:23,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:21:23,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:21:23,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:21:23,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:21:23,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:21:23,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:21:23,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:21:23,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:21:23,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:21:23,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:21:23,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:21:23,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:21:23,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:21:23,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:21:23,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:21:23,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:21:23,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:21:23,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:21:23,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:21:23,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:21:23,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:21:23,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:21:23,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:21:23,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:21:23,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:21:23,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:21:23,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:21:23,060 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 22:21:23,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:21:23,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:21:23,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:21:23,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:21:23,075 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:21:23,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:21:23,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:21:23,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:21:23,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:21:23,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:21:23,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:21:23,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:21:23,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:21:23,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:21:23,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:21:23,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:21:23,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:21:23,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:21:23,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:21:23,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:21:23,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:21:23,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:21:23,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:21:23,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:21:23,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:21:23,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:21:23,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:21:23,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:21:23,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:21:23,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:21:23,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:21:23,351 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:21:23,353 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:21:23,353 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:21:23,354 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-04-17 22:21:23,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c82f1c43/ee05db0e7e28440a8442ca043092278b/FLAG3af0dbbc5 [2020-04-17 22:21:23,938 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:21:23,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-04-17 22:21:23,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c82f1c43/ee05db0e7e28440a8442ca043092278b/FLAG3af0dbbc5 [2020-04-17 22:21:24,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c82f1c43/ee05db0e7e28440a8442ca043092278b [2020-04-17 22:21:24,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:21:24,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:21:24,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:21:24,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:21:24,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:21:24,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:24,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a67c07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24, skipping insertion in model container [2020-04-17 22:21:24,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:24,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:21:24,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:21:24,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:21:24,789 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:21:24,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:21:24,929 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:21:24,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24 WrapperNode [2020-04-17 22:21:24,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:21:24,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:21:24,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:21:24,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:21:24,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:24,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:24,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:21:24,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:21:24,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:21:24,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:21:24,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:24,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:25,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:25,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:25,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:25,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:25,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (1/1) ... [2020-04-17 22:21:25,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:21:25,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:21:25,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:21:25,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:21:25,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (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 22:21:25,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:21:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:21:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:21:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:21:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:21:25,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:21:25,105 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:21:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:21:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:21:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:21:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:21:25,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:21:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:21:25,108 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 22:21:25,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:21:25,451 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:21:25,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:21:25 BoogieIcfgContainer [2020-04-17 22:21:25,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:21:25,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:21:25,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:21:25,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:21:25,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:21:24" (1/3) ... [2020-04-17 22:21:25,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562602be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:21:25, skipping insertion in model container [2020-04-17 22:21:25,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:21:24" (2/3) ... [2020-04-17 22:21:25,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562602be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:21:25, skipping insertion in model container [2020-04-17 22:21:25,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:21:25" (3/3) ... [2020-04-17 22:21:25,464 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-04-17 22:21:25,472 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:21:25,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:21:25,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:21:25,478 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:21:25,513 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,514 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,514 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,514 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,515 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,515 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,516 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,516 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,516 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,516 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,517 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,517 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,519 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,519 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,519 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,519 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,520 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,521 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,528 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,528 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,528 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,529 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,537 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,538 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,538 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,539 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,549 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,549 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,549 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,549 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:21:25,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 22:21:25,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:21:25,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:21:25,580 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:21:25,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:21:25,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:21:25,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:21:25,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:21:25,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:21:25,596 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:25,598 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:25,642 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:21:25,643 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:21:25,648 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. [2020-04-17 22:21:25,651 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 22:21:25,672 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 22:21:25,672 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:21:25,673 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. [2020-04-17 22:21:25,675 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 22:21:25,676 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:21:27,431 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 22:21:27,516 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-17 22:21:27,517 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-17 22:21:27,522 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 22:21:27,550 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 22:21:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 22:21:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 22:21:27,563 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:27,564 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:27,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-17 22:21:27,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:27,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357405759] [2020-04-17 22:21:27,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:27,847 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 22:21:27,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357405759] [2020-04-17 22:21:27,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:27,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:21:27,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260568901] [2020-04-17 22:21:27,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:27,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:27,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:27,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:27,877 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 22:21:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:27,932 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 22:21:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:27,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 22:21:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:27,952 INFO L225 Difference]: With dead ends: 282 [2020-04-17 22:21:27,952 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 22:21:27,954 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 [2020-04-17 22:21:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 22:21:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 22:21:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 22:21:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 22:21:28,026 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 22:21:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:28,027 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 22:21:28,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 22:21:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 22:21:28,029 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:28,029 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:28,029 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:28,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-04-17 22:21:28,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:28,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173009585] [2020-04-17 22:21:28,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:28,103 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 22:21:28,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173009585] [2020-04-17 22:21:28,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:28,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:28,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989272264] [2020-04-17 22:21:28,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:28,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:28,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:28,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:28,108 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-04-17 22:21:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:28,136 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-04-17 22:21:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:28,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-17 22:21:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:28,139 INFO L225 Difference]: With dead ends: 202 [2020-04-17 22:21:28,139 INFO L226 Difference]: Without dead ends: 202 [2020-04-17 22:21:28,141 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 [2020-04-17 22:21:28,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-17 22:21:28,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-17 22:21:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-17 22:21:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-17 22:21:28,173 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-04-17 22:21:28,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:28,174 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-17 22:21:28,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:28,174 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-17 22:21:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:21:28,177 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:28,177 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:28,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:28,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:28,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-04-17 22:21:28,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:28,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404033723] [2020-04-17 22:21:28,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:28,275 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 22:21:28,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404033723] [2020-04-17 22:21:28,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:28,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 22:21:28,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122877106] [2020-04-17 22:21:28,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 22:21:28,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 22:21:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 22:21:28,278 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-04-17 22:21:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:28,287 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-04-17 22:21:28,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 22:21:28,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-17 22:21:28,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:28,291 INFO L225 Difference]: With dead ends: 194 [2020-04-17 22:21:28,292 INFO L226 Difference]: Without dead ends: 194 [2020-04-17 22:21:28,292 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 [2020-04-17 22:21:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-04-17 22:21:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-04-17 22:21:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-04-17 22:21:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-04-17 22:21:28,312 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-04-17 22:21:28,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:28,312 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-04-17 22:21:28,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 22:21:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-04-17 22:21:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:21:28,316 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:28,316 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:28,317 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:28,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-04-17 22:21:28,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:28,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64279260] [2020-04-17 22:21:28,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:28,436 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 22:21:28,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64279260] [2020-04-17 22:21:28,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:28,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:28,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655267051] [2020-04-17 22:21:28,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:28,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:28,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:28,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:28,439 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-04-17 22:21:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:28,483 INFO L93 Difference]: Finished difference Result 225 states and 557 transitions. [2020-04-17 22:21:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:21:28,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:21:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:28,488 INFO L225 Difference]: With dead ends: 225 [2020-04-17 22:21:28,488 INFO L226 Difference]: Without dead ends: 161 [2020-04-17 22:21:28,489 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 [2020-04-17 22:21:28,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-04-17 22:21:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-04-17 22:21:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-04-17 22:21:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 386 transitions. [2020-04-17 22:21:28,505 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 386 transitions. Word has length 11 [2020-04-17 22:21:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:28,505 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 386 transitions. [2020-04-17 22:21:28,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 386 transitions. [2020-04-17 22:21:28,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:21:28,506 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:28,506 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:28,507 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:28,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1941611660, now seen corresponding path program 1 times [2020-04-17 22:21:28,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:28,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840633267] [2020-04-17 22:21:28,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:28,588 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 22:21:28,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840633267] [2020-04-17 22:21:28,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:28,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:28,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594785111] [2020-04-17 22:21:28,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:21:28,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:28,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:21:28,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:21:28,591 INFO L87 Difference]: Start difference. First operand 161 states and 386 transitions. Second operand 5 states. [2020-04-17 22:21:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:28,638 INFO L93 Difference]: Finished difference Result 160 states and 362 transitions. [2020-04-17 22:21:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:21:28,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-17 22:21:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:28,639 INFO L225 Difference]: With dead ends: 160 [2020-04-17 22:21:28,640 INFO L226 Difference]: Without dead ends: 123 [2020-04-17 22:21:28,640 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 [2020-04-17 22:21:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-04-17 22:21:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-04-17 22:21:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-04-17 22:21:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-04-17 22:21:28,644 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-04-17 22:21:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:28,645 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-04-17 22:21:28,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:21:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-04-17 22:21:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:21:28,646 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:28,646 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:28,646 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:28,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:28,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-04-17 22:21:28,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:28,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283559968] [2020-04-17 22:21:28,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:28,707 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 22:21:28,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283559968] [2020-04-17 22:21:28,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:28,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:21:28,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735394383] [2020-04-17 22:21:28,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:21:28,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:28,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:21:28,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:21:28,709 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-04-17 22:21:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:28,777 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-04-17 22:21:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 22:21:28,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 22:21:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:28,780 INFO L225 Difference]: With dead ends: 118 [2020-04-17 22:21:28,780 INFO L226 Difference]: Without dead ends: 108 [2020-04-17 22:21:28,780 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 [2020-04-17 22:21:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-04-17 22:21:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-04-17 22:21:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-04-17 22:21:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-04-17 22:21:28,784 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-04-17 22:21:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:28,784 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-04-17 22:21:28,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:21:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-04-17 22:21:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:28,786 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:28,786 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:28,786 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:28,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-04-17 22:21:28,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:28,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895468836] [2020-04-17 22:21:28,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:28,867 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 22:21:28,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895468836] [2020-04-17 22:21:28,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:28,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:28,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590713102] [2020-04-17 22:21:28,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:28,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:28,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:28,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:28,869 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-04-17 22:21:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:28,886 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-04-17 22:21:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:28,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:28,888 INFO L225 Difference]: With dead ends: 133 [2020-04-17 22:21:28,888 INFO L226 Difference]: Without dead ends: 54 [2020-04-17 22:21:28,889 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 22:21:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-04-17 22:21:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-04-17 22:21:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-04-17 22:21:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-04-17 22:21:28,891 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-04-17 22:21:28,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:28,891 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-04-17 22:21:28,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-04-17 22:21:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:28,892 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:28,892 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:28,892 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:28,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:28,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-04-17 22:21:28,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:28,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661226684] [2020-04-17 22:21:28,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:28,952 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 22:21:28,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661226684] [2020-04-17 22:21:28,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:28,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:28,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510982368] [2020-04-17 22:21:28,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:28,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:28,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:28,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:28,955 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-04-17 22:21:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:28,976 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-04-17 22:21:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:28,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:28,977 INFO L225 Difference]: With dead ends: 63 [2020-04-17 22:21:28,978 INFO L226 Difference]: Without dead ends: 38 [2020-04-17 22:21:28,978 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 22:21:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-17 22:21:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-17 22:21:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-17 22:21:28,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-04-17 22:21:28,980 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-04-17 22:21:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:28,981 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-04-17 22:21:28,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-04-17 22:21:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:28,982 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:28,983 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:28,983 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:28,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-04-17 22:21:28,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:28,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538147571] [2020-04-17 22:21:28,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:29,051 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 22:21:29,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538147571] [2020-04-17 22:21:29,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:29,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:21:29,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116869636] [2020-04-17 22:21:29,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:29,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:29,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:29,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:29,056 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-04-17 22:21:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:29,076 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2020-04-17 22:21:29,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:21:29,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:29,077 INFO L225 Difference]: With dead ends: 51 [2020-04-17 22:21:29,077 INFO L226 Difference]: Without dead ends: 30 [2020-04-17 22:21:29,078 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 22:21:29,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-04-17 22:21:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-04-17 22:21:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-04-17 22:21:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-04-17 22:21:29,080 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-04-17 22:21:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:29,080 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-04-17 22:21:29,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-04-17 22:21:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:21:29,081 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:21:29,081 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:21:29,081 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:21:29,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:21:29,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1156169136, now seen corresponding path program 4 times [2020-04-17 22:21:29,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:21:29,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021753030] [2020-04-17 22:21:29,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:21:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:21:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 22:21:29,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021753030] [2020-04-17 22:21:29,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:21:29,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:21:29,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305691490] [2020-04-17 22:21:29,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:21:29,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:21:29,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:21:29,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:21:29,140 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-04-17 22:21:29,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:21:29,154 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-04-17 22:21:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 22:21:29,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 22:21:29,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:21:29,155 INFO L225 Difference]: With dead ends: 29 [2020-04-17 22:21:29,155 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:21:29,155 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 [2020-04-17 22:21:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:21:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:21:29,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:21:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:21:29,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 22:21:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:21:29,157 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:21:29,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:21:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:21:29,157 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:21:29,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:21:29 BasicIcfg [2020-04-17 22:21:29,161 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:21:29,163 INFO L168 Benchmark]: Toolchain (without parser) took 4888.89 ms. Allocated memory was 138.9 MB in the beginning and 248.5 MB in the end (delta: 109.6 MB). Free memory was 101.8 MB in the beginning and 138.9 MB in the end (delta: -37.1 MB). Peak memory consumption was 72.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:29,164 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 22:21:29,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.71 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 159.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:29,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.57 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:29,167 INFO L168 Benchmark]: Boogie Preprocessor took 48.70 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:29,168 INFO L168 Benchmark]: RCFGBuilder took 417.59 ms. Allocated memory is still 202.9 MB. Free memory was 155.6 MB in the beginning and 134.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:29,168 INFO L168 Benchmark]: TraceAbstraction took 3704.13 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 133.5 MB in the beginning and 138.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:21:29,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.71 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 159.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.57 ms. Allocated memory is still 202.9 MB. Free memory was 159.6 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.70 ms. Allocated memory is still 202.9 MB. Free memory was 157.6 MB in the beginning and 156.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.59 ms. Allocated memory is still 202.9 MB. Free memory was 155.6 MB in the beginning and 134.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3704.13 ms. Allocated memory was 202.9 MB in the beginning and 248.5 MB in the end (delta: 45.6 MB). Free memory was 133.5 MB in the beginning and 138.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 672 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 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: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 206 SDtfs, 144 SDslu, 245 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4682 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...