/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/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 22:40:27,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 22:40:27,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 22:40:27,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 22:40:27,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 22:40:27,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 22:40:27,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 22:40:27,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 22:40:27,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 22:40:27,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 22:40:27,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 22:40:27,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 22:40:27,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 22:40:27,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 22:40:27,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 22:40:27,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 22:40:27,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 22:40:27,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 22:40:27,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 22:40:27,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 22:40:27,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 22:40:27,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 22:40:27,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 22:40:27,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 22:40:27,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 22:40:27,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 22:40:27,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 22:40:27,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 22:40:27,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 22:40:27,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 22:40:27,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 22:40:27,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 22:40:27,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 22:40:27,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 22:40:27,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 22:40:27,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 22:40:27,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 22:40:27,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 22:40:27,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 22:40:27,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 22:40:27,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 22:40:27,543 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 22:40:27,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 22:40:27,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 22:40:27,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 22:40:27,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 22:40:27,559 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 22:40:27,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 22:40:27,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 22:40:27,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 22:40:27,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 22:40:27,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 22:40:27,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 22:40:27,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 22:40:27,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 22:40:27,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 22:40:27,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 22:40:27,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 22:40:27,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 22:40:27,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 22:40:27,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 22:40:27,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 22:40:27,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 22:40:27,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 22:40:27,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 22:40:27,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 22:40:27,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 22:40:27,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 22:40:27,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 22:40:27,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 22:40:27,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 22:40:27,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 22:40:27,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 22:40:27,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 22:40:27,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 22:40:27,875 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 22:40:27,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-04-17 22:40:27,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4efc68b5/685ea60bb9074f47b7b0603c3bc718e6/FLAG8d99ce0ef [2020-04-17 22:40:28,553 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 22:40:28,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2020-04-17 22:40:28,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4efc68b5/685ea60bb9074f47b7b0603c3bc718e6/FLAG8d99ce0ef [2020-04-17 22:40:28,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4efc68b5/685ea60bb9074f47b7b0603c3bc718e6 [2020-04-17 22:40:28,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 22:40:28,819 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 22:40:28,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 22:40:28,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 22:40:28,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 22:40:28,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:40:28" (1/1) ... [2020-04-17 22:40:28,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60518ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:28, skipping insertion in model container [2020-04-17 22:40:28,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 10:40:28" (1/1) ... [2020-04-17 22:40:28,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 22:40:28,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 22:40:29,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:40:29,436 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 22:40:29,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 22:40:29,616 INFO L208 MainTranslator]: Completed translation [2020-04-17 22:40:29,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29 WrapperNode [2020-04-17 22:40:29,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 22:40:29,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 22:40:29,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 22:40:29,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 22:40:29,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 22:40:29,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 22:40:29,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 22:40:29,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 22:40:29,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (1/1) ... [2020-04-17 22:40:29,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 22:40:29,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 22:40:29,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 22:40:29,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 22:40:29,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (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 22:40:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 22:40:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 22:40:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 22:40:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 22:40:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 22:40:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 22:40:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 22:40:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 22:40:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 22:40:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 22:40:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-17 22:40:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-17 22:40:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 22:40:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 22:40:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 22:40:29,792 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 22:40:30,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 22:40:30,232 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 22:40:30,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:40:30 BoogieIcfgContainer [2020-04-17 22:40:30,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 22:40:30,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 22:40:30,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 22:40:30,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 22:40:30,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 10:40:28" (1/3) ... [2020-04-17 22:40:30,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0079dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:40:30, skipping insertion in model container [2020-04-17 22:40:30,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 10:40:29" (2/3) ... [2020-04-17 22:40:30,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0079dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 10:40:30, skipping insertion in model container [2020-04-17 22:40:30,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 10:40:30" (3/3) ... [2020-04-17 22:40:30,246 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2020-04-17 22:40:30,257 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 22:40:30,257 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 22:40:30,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 22:40:30,265 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 22:40:30,294 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,295 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,295 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,295 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,296 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,296 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,296 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,297 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,297 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,297 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,297 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,298 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,298 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,298 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,299 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,299 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,299 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,300 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,300 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,300 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,300 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,301 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,301 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,301 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,306 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,306 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,306 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,307 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,313 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,313 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,314 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,314 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,318 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,318 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,319 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,319 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,328 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,328 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,329 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,330 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 22:40:30,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-17 22:40:30,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 22:40:30,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 22:40:30,362 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 22:40:30,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 22:40:30,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 22:40:30,363 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 22:40:30,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 22:40:30,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 22:40:30,378 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 86 transitions, 192 flow [2020-04-17 22:40:30,379 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-17 22:40:30,433 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-17 22:40:30,433 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:40:30,439 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-17 22:40:30,442 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2020-04-17 22:40:30,468 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2020-04-17 22:40:30,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 22:40:30,469 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2020-04-17 22:40:30,475 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2016 [2020-04-17 22:40:30,476 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 22:40:32,464 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-04-17 22:40:32,537 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4485 [2020-04-17 22:40:32,537 INFO L214 etLargeBlockEncoding]: Total number of compositions: 67 [2020-04-17 22:40:32,541 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 29 transitions, 78 flow [2020-04-17 22:40:32,665 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1450 states. [2020-04-17 22:40:32,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states. [2020-04-17 22:40:32,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 22:40:32,683 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:32,684 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:32,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash 546901279, now seen corresponding path program 1 times [2020-04-17 22:40:32,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:32,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965698449] [2020-04-17 22:40:32,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:32,890 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 22:40:32,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965698449] [2020-04-17 22:40:32,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:32,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:32,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591577018] [2020-04-17 22:40:32,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 22:40:32,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:32,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 22:40:32,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:40:32,917 INFO L87 Difference]: Start difference. First operand 1450 states. Second operand 2 states. [2020-04-17 22:40:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:33,014 INFO L93 Difference]: Finished difference Result 1450 states and 5376 transitions. [2020-04-17 22:40:33,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 22:40:33,016 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-04-17 22:40:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:33,053 INFO L225 Difference]: With dead ends: 1450 [2020-04-17 22:40:33,053 INFO L226 Difference]: Without dead ends: 1194 [2020-04-17 22:40:33,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 22:40:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-04-17 22:40:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1194. [2020-04-17 22:40:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-04-17 22:40:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 4352 transitions. [2020-04-17 22:40:33,208 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 4352 transitions. Word has length 10 [2020-04-17 22:40:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:33,209 INFO L479 AbstractCegarLoop]: Abstraction has 1194 states and 4352 transitions. [2020-04-17 22:40:33,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 22:40:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 4352 transitions. [2020-04-17 22:40:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 22:40:33,213 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:33,214 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:33,214 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:33,214 INFO L82 PathProgramCache]: Analyzing trace with hash -225951647, now seen corresponding path program 1 times [2020-04-17 22:40:33,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:33,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788949910] [2020-04-17 22:40:33,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:33,385 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 22:40:33,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788949910] [2020-04-17 22:40:33,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:33,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:33,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322544195] [2020-04-17 22:40:33,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:40:33,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:40:33,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:40:33,389 INFO L87 Difference]: Start difference. First operand 1194 states and 4352 transitions. Second operand 4 states. [2020-04-17 22:40:33,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:33,435 INFO L93 Difference]: Finished difference Result 1322 states and 4640 transitions. [2020-04-17 22:40:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:40:33,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-17 22:40:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:33,445 INFO L225 Difference]: With dead ends: 1322 [2020-04-17 22:40:33,446 INFO L226 Difference]: Without dead ends: 1066 [2020-04-17 22:40:33,447 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 22:40:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-04-17 22:40:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2020-04-17 22:40:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-04-17 22:40:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 3808 transitions. [2020-04-17 22:40:33,492 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 3808 transitions. Word has length 11 [2020-04-17 22:40:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:33,492 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 3808 transitions. [2020-04-17 22:40:33,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:40:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 3808 transitions. [2020-04-17 22:40:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 22:40:33,495 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:33,495 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:33,495 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1585408540, now seen corresponding path program 1 times [2020-04-17 22:40:33,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:33,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810247022] [2020-04-17 22:40:33,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:33,604 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 22:40:33,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810247022] [2020-04-17 22:40:33,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:33,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:33,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5602148] [2020-04-17 22:40:33,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:40:33,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:33,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:40:33,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:40:33,607 INFO L87 Difference]: Start difference. First operand 1066 states and 3808 transitions. Second operand 4 states. [2020-04-17 22:40:33,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:33,654 INFO L93 Difference]: Finished difference Result 1162 states and 4016 transitions. [2020-04-17 22:40:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:40:33,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 22:40:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:33,663 INFO L225 Difference]: With dead ends: 1162 [2020-04-17 22:40:33,664 INFO L226 Difference]: Without dead ends: 970 [2020-04-17 22:40:33,665 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 22:40:33,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-04-17 22:40:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-04-17 22:40:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-04-17 22:40:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3408 transitions. [2020-04-17 22:40:33,708 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3408 transitions. Word has length 12 [2020-04-17 22:40:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:33,708 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 3408 transitions. [2020-04-17 22:40:33,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:40:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3408 transitions. [2020-04-17 22:40:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 22:40:33,712 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:33,712 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:33,712 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:33,713 INFO L82 PathProgramCache]: Analyzing trace with hash -333651602, now seen corresponding path program 1 times [2020-04-17 22:40:33,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:33,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152114107] [2020-04-17 22:40:33,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:33,821 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 22:40:33,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152114107] [2020-04-17 22:40:33,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:33,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:33,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9900270] [2020-04-17 22:40:33,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:40:33,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:33,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:40:33,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:40:33,824 INFO L87 Difference]: Start difference. First operand 970 states and 3408 transitions. Second operand 4 states. [2020-04-17 22:40:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:33,855 INFO L93 Difference]: Finished difference Result 1042 states and 3558 transitions. [2020-04-17 22:40:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:40:33,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 22:40:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:33,864 INFO L225 Difference]: With dead ends: 1042 [2020-04-17 22:40:33,864 INFO L226 Difference]: Without dead ends: 898 [2020-04-17 22:40:33,865 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 22:40:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-04-17 22:40:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-04-17 22:40:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-04-17 22:40:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 3114 transitions. [2020-04-17 22:40:33,901 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 3114 transitions. Word has length 13 [2020-04-17 22:40:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:33,902 INFO L479 AbstractCegarLoop]: Abstraction has 898 states and 3114 transitions. [2020-04-17 22:40:33,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:40:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 3114 transitions. [2020-04-17 22:40:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 22:40:33,904 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:33,904 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:33,904 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:33,905 INFO L82 PathProgramCache]: Analyzing trace with hash 517017440, now seen corresponding path program 1 times [2020-04-17 22:40:33,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:33,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909810237] [2020-04-17 22:40:33,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:33,962 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 22:40:33,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909810237] [2020-04-17 22:40:33,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:33,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 22:40:33,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353423683] [2020-04-17 22:40:33,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 22:40:33,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:33,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 22:40:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 22:40:33,964 INFO L87 Difference]: Start difference. First operand 898 states and 3114 transitions. Second operand 4 states. [2020-04-17 22:40:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:34,027 INFO L93 Difference]: Finished difference Result 952 states and 3222 transitions. [2020-04-17 22:40:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 22:40:34,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-17 22:40:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:34,038 INFO L225 Difference]: With dead ends: 952 [2020-04-17 22:40:34,038 INFO L226 Difference]: Without dead ends: 844 [2020-04-17 22:40:34,039 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 22:40:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-04-17 22:40:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 844. [2020-04-17 22:40:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-04-17 22:40:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2898 transitions. [2020-04-17 22:40:34,071 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2898 transitions. Word has length 14 [2020-04-17 22:40:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:34,071 INFO L479 AbstractCegarLoop]: Abstraction has 844 states and 2898 transitions. [2020-04-17 22:40:34,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 22:40:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2898 transitions. [2020-04-17 22:40:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 22:40:34,074 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:34,074 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:34,074 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:34,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:34,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1152352578, now seen corresponding path program 1 times [2020-04-17 22:40:34,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:34,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304969324] [2020-04-17 22:40:34,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:34,151 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 22:40:34,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304969324] [2020-04-17 22:40:34,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:34,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:40:34,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168366328] [2020-04-17 22:40:34,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:40:34,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:34,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:40:34,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:40:34,154 INFO L87 Difference]: Start difference. First operand 844 states and 2898 transitions. Second operand 5 states. [2020-04-17 22:40:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:34,230 INFO L93 Difference]: Finished difference Result 1063 states and 3587 transitions. [2020-04-17 22:40:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:40:34,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-04-17 22:40:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:34,236 INFO L225 Difference]: With dead ends: 1063 [2020-04-17 22:40:34,236 INFO L226 Difference]: Without dead ends: 472 [2020-04-17 22:40:34,237 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:40:34,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2020-04-17 22:40:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2020-04-17 22:40:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-04-17 22:40:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1500 transitions. [2020-04-17 22:40:34,258 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1500 transitions. Word has length 15 [2020-04-17 22:40:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:34,259 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 1500 transitions. [2020-04-17 22:40:34,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:40:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1500 transitions. [2020-04-17 22:40:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-04-17 22:40:34,261 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:34,261 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:34,261 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:34,262 INFO L82 PathProgramCache]: Analyzing trace with hash 508938520, now seen corresponding path program 1 times [2020-04-17 22:40:34,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:34,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837766199] [2020-04-17 22:40:34,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:34,354 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 22:40:34,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837766199] [2020-04-17 22:40:34,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:34,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 22:40:34,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494945362] [2020-04-17 22:40:34,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 22:40:34,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:34,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 22:40:34,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 22:40:34,356 INFO L87 Difference]: Start difference. First operand 472 states and 1500 transitions. Second operand 6 states. [2020-04-17 22:40:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:34,479 INFO L93 Difference]: Finished difference Result 634 states and 1979 transitions. [2020-04-17 22:40:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 22:40:34,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-04-17 22:40:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:34,482 INFO L225 Difference]: With dead ends: 634 [2020-04-17 22:40:34,482 INFO L226 Difference]: Without dead ends: 292 [2020-04-17 22:40:34,483 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-04-17 22:40:34,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-04-17 22:40:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-04-17 22:40:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-04-17 22:40:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 846 transitions. [2020-04-17 22:40:34,494 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 846 transitions. Word has length 16 [2020-04-17 22:40:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:34,494 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 846 transitions. [2020-04-17 22:40:34,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 22:40:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 846 transitions. [2020-04-17 22:40:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 22:40:34,495 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:34,496 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 22:40:34,496 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:34,497 INFO L82 PathProgramCache]: Analyzing trace with hash -670734284, now seen corresponding path program 1 times [2020-04-17 22:40:34,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:34,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625909461] [2020-04-17 22:40:34,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:34,603 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 22:40:34,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625909461] [2020-04-17 22:40:34,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:34,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:40:34,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845804632] [2020-04-17 22:40:34,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:40:34,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:34,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:40:34,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:40:34,607 INFO L87 Difference]: Start difference. First operand 292 states and 846 transitions. Second operand 5 states. [2020-04-17 22:40:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:34,648 INFO L93 Difference]: Finished difference Result 400 states and 1128 transitions. [2020-04-17 22:40:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:40:34,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-04-17 22:40:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:34,650 INFO L225 Difference]: With dead ends: 400 [2020-04-17 22:40:34,651 INFO L226 Difference]: Without dead ends: 172 [2020-04-17 22:40:34,651 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:40:34,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-17 22:40:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-17 22:40:34,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-17 22:40:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 452 transitions. [2020-04-17 22:40:34,659 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 452 transitions. Word has length 17 [2020-04-17 22:40:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:34,659 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 452 transitions. [2020-04-17 22:40:34,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:40:34,662 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 452 transitions. [2020-04-17 22:40:34,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-04-17 22:40:34,664 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 22:40:34,664 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 22:40:34,665 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 22:40:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 22:40:34,665 INFO L82 PathProgramCache]: Analyzing trace with hash -180488596, now seen corresponding path program 1 times [2020-04-17 22:40:34,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 22:40:34,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544416377] [2020-04-17 22:40:34,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 22:40:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 22:40:34,732 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 22:40:34,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544416377] [2020-04-17 22:40:34,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 22:40:34,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 22:40:34,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531943859] [2020-04-17 22:40:34,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 22:40:34,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 22:40:34,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 22:40:34,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 22:40:34,735 INFO L87 Difference]: Start difference. First operand 172 states and 452 transitions. Second operand 5 states. [2020-04-17 22:40:34,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 22:40:34,774 INFO L93 Difference]: Finished difference Result 148 states and 376 transitions. [2020-04-17 22:40:34,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 22:40:34,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-04-17 22:40:34,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 22:40:34,775 INFO L225 Difference]: With dead ends: 148 [2020-04-17 22:40:34,775 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 22:40:34,775 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 22:40:34,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 22:40:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 22:40:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 22:40:34,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 22:40:34,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-04-17 22:40:34,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 22:40:34,777 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 22:40:34,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 22:40:34,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 22:40:34,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 22:40:34,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 10:40:34 BasicIcfg [2020-04-17 22:40:34,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 22:40:34,784 INFO L168 Benchmark]: Toolchain (without parser) took 5983.94 ms. Allocated memory was 138.4 MB in the beginning and 287.8 MB in the end (delta: 149.4 MB). Free memory was 101.8 MB in the beginning and 148.5 MB in the end (delta: -46.7 MB). Peak memory consumption was 102.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:34,785 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 22:40:34,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.19 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.8 MB in the beginning and 159.0 MB in the end (delta: -59.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:34,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.38 ms. Allocated memory is still 202.9 MB. Free memory was 159.0 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:34,793 INFO L168 Benchmark]: Boogie Preprocessor took 29.42 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:34,793 INFO L168 Benchmark]: RCFGBuilder took 521.30 ms. Allocated memory is still 202.9 MB. Free memory was 155.0 MB in the beginning and 130.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:34,796 INFO L168 Benchmark]: TraceAbstraction took 4543.99 ms. Allocated memory was 202.9 MB in the beginning and 287.8 MB in the end (delta: 84.9 MB). Free memory was 130.2 MB in the beginning and 148.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 66.7 MB. Max. memory is 7.1 GB. [2020-04-17 22:40:34,808 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 797.19 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.8 MB in the beginning and 159.0 MB in the end (delta: -59.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.38 ms. Allocated memory is still 202.9 MB. Free memory was 159.0 MB in the beginning and 157.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.42 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 155.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 521.30 ms. Allocated memory is still 202.9 MB. Free memory was 155.0 MB in the beginning and 130.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4543.99 ms. Allocated memory was 202.9 MB in the beginning and 287.8 MB in the end (delta: 84.9 MB). Free memory was 130.2 MB in the beginning and 148.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 66.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.1s, 97 ProgramPointsBefore, 41 ProgramPointsAfterwards, 86 TransitionsBefore, 29 TransitionsAfterwards, 2016 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 1045 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 4485 CheckedPairsTotal, 67 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 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 256 SDtfs, 309 SDslu, 390 SDs, 0 SdLazy, 89 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1450occurred 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 5304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...