/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:28:29,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:28:29,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:28:29,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:28:29,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:28:29,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:28:29,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:28:29,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:28:29,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:28:29,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:28:29,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:28:29,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:28:29,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:28:29,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:28:29,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:28:29,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:28:29,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:28:29,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:28:29,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:28:29,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:28:29,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:28:29,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:28:29,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:28:29,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:28:29,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:28:29,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:28:29,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:28:29,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:28:29,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:28:29,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:28:29,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:28:29,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:28:29,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:28:29,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:28:29,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:28:29,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:28:29,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:28:29,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:28:29,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:28:29,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:28:29,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:28:29,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-04-17 17:28:29,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:28:29,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:28:29,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:28:29,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:28:29,497 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:28:29,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:28:29,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:28:29,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:28:29,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:28:29,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:28:29,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:28:29,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:28:29,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:28:29,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:28:29,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:28:29,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:28:29,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:28:29,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:28:29,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:28:29,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:28:29,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:28:29,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:28:29,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:28:29,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:28:29,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:28:29,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:28:29,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:28:29,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:28:29,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:28:29,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:28:29,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:28:29,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:28:29,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:28:29,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:28:29,794 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:28:29,795 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2020-04-17 17:28:29,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54461968/98fb8f4d68014c1282ef9845cab94a0a/FLAG086390fb7 [2020-04-17 17:28:30,427 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:28:30,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2020-04-17 17:28:30,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54461968/98fb8f4d68014c1282ef9845cab94a0a/FLAG086390fb7 [2020-04-17 17:28:30,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54461968/98fb8f4d68014c1282ef9845cab94a0a [2020-04-17 17:28:30,732 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:28:30,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:28:30,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:28:30,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:28:30,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:28:30,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:28:30" (1/1) ... [2020-04-17 17:28:30,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cf9aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:30, skipping insertion in model container [2020-04-17 17:28:30,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:28:30" (1/1) ... [2020-04-17 17:28:30,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:28:30,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:28:31,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:28:31,338 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:28:31,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:28:31,474 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:28:31,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31 WrapperNode [2020-04-17 17:28:31,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:28:31,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:28:31,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:28:31,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:28:31,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:28:31,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:28:31,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:28:31,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:28:31,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (1/1) ... [2020-04-17 17:28:31,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:28:31,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:28:31,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:28:31,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:28:31,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (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 17:28:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:28:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:28:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:28:31,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:28:31,626 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:28:31,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:28:31,626 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:28:31,626 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:28:31,626 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:28:31,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:28:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:28:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:28:31,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:28:31,629 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 17:28:32,040 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:28:32,040 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:28:32,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:28:32 BoogieIcfgContainer [2020-04-17 17:28:32,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:28:32,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:28:32,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:28:32,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:28:32,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:28:30" (1/3) ... [2020-04-17 17:28:32,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530c6429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:28:32, skipping insertion in model container [2020-04-17 17:28:32,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:28:31" (2/3) ... [2020-04-17 17:28:32,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530c6429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:28:32, skipping insertion in model container [2020-04-17 17:28:32,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:28:32" (3/3) ... [2020-04-17 17:28:32,054 INFO L109 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2020-04-17 17:28:32,065 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:28:32,065 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:28:32,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:28:32,074 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:28:32,101 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,102 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,102 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,102 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,103 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,103 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,104 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,104 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,104 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,104 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,105 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,105 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,106 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,106 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,106 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,106 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,107 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,107 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,111 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,112 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,112 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,113 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,119 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,119 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,120 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,120 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,127 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,128 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,128 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,128 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:28:32,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:28:32,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:28:32,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:28:32,173 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:28:32,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:28:32,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:28:32,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:28:32,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:28:32,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:28:32,190 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 17:28:32,192 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 17:28:32,240 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 17:28:32,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:28:32,248 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 17:28:32,251 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 17:28:32,274 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 17:28:32,274 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:28:32,275 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 17:28:32,277 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 17:28:32,278 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:28:33,987 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-17 17:28:34,155 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-17 17:28:34,250 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-17 17:28:34,250 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 17:28:34,255 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 17:28:34,281 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 17:28:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 17:28:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:28:34,293 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:28:34,294 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:28:34,294 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:28:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:28:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-17 17:28:34,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:28:34,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155423555] [2020-04-17 17:28:34,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:28:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:28:34,563 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 17:28:34,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155423555] [2020-04-17 17:28:34,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:28:34,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:28:34,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140400434] [2020-04-17 17:28:34,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:28:34,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:28:34,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:28:34,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:28:34,586 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 17:28:34,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:28:34,663 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 17:28:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:28:34,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 17:28:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:28:34,700 INFO L225 Difference]: With dead ends: 282 [2020-04-17 17:28:34,703 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 17:28:34,705 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 17:28:34,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 17:28:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 17:28:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 17:28:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 17:28:34,806 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 17:28:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:28:34,808 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 17:28:34,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:28:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 17:28:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:28:34,809 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:28:34,810 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:28:34,810 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:28:34,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:28:34,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-04-17 17:28:34,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:28:34,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230006492] [2020-04-17 17:28:34,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:28:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:28:34,897 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 17:28:34,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230006492] [2020-04-17 17:28:34,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:28:34,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:28:34,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364404305] [2020-04-17 17:28:34,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:28:34,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:28:34,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:28:34,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:28:34,901 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 17:28:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:28:34,980 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-17 17:28:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:28:34,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 17:28:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:28:34,983 INFO L225 Difference]: With dead ends: 242 [2020-04-17 17:28:34,983 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 17:28:34,984 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 17:28:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 17:28:34,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 17:28:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 17:28:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 17:28:35,001 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-17 17:28:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:28:35,002 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 17:28:35,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:28:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 17:28:35,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:28:35,003 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:28:35,003 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:28:35,004 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:28:35,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:28:35,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-04-17 17:28:35,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:28:35,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520703944] [2020-04-17 17:28:35,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:28:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:28:35,080 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 17:28:35,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520703944] [2020-04-17 17:28:35,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:28:35,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:28:35,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353819311] [2020-04-17 17:28:35,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:28:35,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:28:35,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:28:35,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:28:35,083 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 4 states. [2020-04-17 17:28:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:28:35,105 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-04-17 17:28:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:28:35,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 17:28:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:28:35,107 INFO L225 Difference]: With dead ends: 182 [2020-04-17 17:28:35,107 INFO L226 Difference]: Without dead ends: 86 [2020-04-17 17:28:35,107 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 17:28:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-04-17 17:28:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-04-17 17:28:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-17 17:28:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-04-17 17:28:35,113 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 11 [2020-04-17 17:28:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:28:35,114 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-04-17 17:28:35,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:28:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-04-17 17:28:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:28:35,115 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:28:35,115 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:28:35,116 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:28:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:28:35,116 INFO L82 PathProgramCache]: Analyzing trace with hash -118658274, now seen corresponding path program 1 times [2020-04-17 17:28:35,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:28:35,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117064672] [2020-04-17 17:28:35,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:28:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:28:35,185 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 17:28:35,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117064672] [2020-04-17 17:28:35,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:28:35,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:28:35,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130391862] [2020-04-17 17:28:35,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:28:35,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:28:35,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:28:35,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:28:35,189 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 3 states. [2020-04-17 17:28:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:28:35,230 INFO L93 Difference]: Finished difference Result 82 states and 174 transitions. [2020-04-17 17:28:35,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:28:35,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-04-17 17:28:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:28:35,232 INFO L225 Difference]: With dead ends: 82 [2020-04-17 17:28:35,232 INFO L226 Difference]: Without dead ends: 82 [2020-04-17 17:28:35,233 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 17:28:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-04-17 17:28:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-04-17 17:28:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-04-17 17:28:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 174 transitions. [2020-04-17 17:28:35,249 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 174 transitions. Word has length 13 [2020-04-17 17:28:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:28:35,249 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 174 transitions. [2020-04-17 17:28:35,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:28:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 174 transitions. [2020-04-17 17:28:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:28:35,254 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:28:35,254 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:28:35,255 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:28:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:28:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash 616515302, now seen corresponding path program 1 times [2020-04-17 17:28:35,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:28:35,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983887755] [2020-04-17 17:28:35,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:28:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:28:35,356 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 17:28:35,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983887755] [2020-04-17 17:28:35,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:28:35,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:28:35,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042186567] [2020-04-17 17:28:35,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:28:35,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:28:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:28:35,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:28:35,361 INFO L87 Difference]: Start difference. First operand 82 states and 174 transitions. Second operand 4 states. [2020-04-17 17:28:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:28:35,387 INFO L93 Difference]: Finished difference Result 74 states and 154 transitions. [2020-04-17 17:28:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:28:35,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 17:28:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:28:35,388 INFO L225 Difference]: With dead ends: 74 [2020-04-17 17:28:35,388 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:28:35,388 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 17:28:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:28:35,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:28:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:28:35,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:28:35,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 17:28:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:28:35,390 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:28:35,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:28:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:28:35,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:28:35,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:28:35 BasicIcfg [2020-04-17 17:28:35,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:28:35,396 INFO L168 Benchmark]: Toolchain (without parser) took 4662.04 ms. Allocated memory was 137.4 MB in the beginning and 249.6 MB in the end (delta: 112.2 MB). Free memory was 99.1 MB in the beginning and 93.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 117.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:28:35,397 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-17 17:28:35,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.24 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 97.1 MB in the beginning and 157.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:28:35,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.89 ms. Allocated memory is still 200.8 MB. Free memory was 157.1 MB in the beginning and 155.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:28:35,401 INFO L168 Benchmark]: Boogie Preprocessor took 31.21 ms. Allocated memory is still 200.8 MB. Free memory was 155.0 MB in the beginning and 153.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:28:35,402 INFO L168 Benchmark]: RCFGBuilder took 484.96 ms. Allocated memory is still 200.8 MB. Free memory was 153.6 MB in the beginning and 131.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:28:35,403 INFO L168 Benchmark]: TraceAbstraction took 3347.96 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 131.2 MB in the beginning and 93.9 MB in the end (delta: 37.3 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:28:35,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.24 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 97.1 MB in the beginning and 157.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.89 ms. Allocated memory is still 200.8 MB. Free memory was 157.1 MB in the beginning and 155.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.21 ms. Allocated memory is still 200.8 MB. Free memory was 155.0 MB in the beginning and 153.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.96 ms. Allocated memory is still 200.8 MB. Free memory was 153.6 MB in the beginning and 131.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3347.96 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 131.2 MB in the beginning and 93.9 MB in the end (delta: 37.3 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 83 SDtfs, 73 SDslu, 67 SDs, 0 SdLazy, 27 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...