/usr/bin/java -Xmx16000000000 -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-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:11:53,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:11:53,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:11:53,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:11:53,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:11:53,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:11:53,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:11:53,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:11:53,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:11:53,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:11:53,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:11:53,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:11:53,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:11:53,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:11:53,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:11:53,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:11:53,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:11:53,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:11:53,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:11:53,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:11:53,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:11:53,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:11:53,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:11:53,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:11:53,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:11:53,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:11:53,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:11:53,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:11:53,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:11:53,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:11:53,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:11:53,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:11:53,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:11:53,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:11:53,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:11:53,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:11:53,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:11:53,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:11:53,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:11:53,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:11:53,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:11:53,524 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-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:11:53,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:11:53,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:11:53,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:11:53,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:11:53,567 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:11:53,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:11:53,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:11:53,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:11:53,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:11:53,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:11:53,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:11:53,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:11:53,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:11:53,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:11:53,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:11:53,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:11:53,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:11:53,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:11:53,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:11:53,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:11:53,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:11:53,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:11:53,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:11:53,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:11:53,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:11:53,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:11:53,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:11:53,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:11:53,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:11:53,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:11:53,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:11:53,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:11:53,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:11:53,877 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:11:53,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2020-10-16 05:11:53,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d54dbdb/3be70d3296a24e4fa44d14bf67b20d35/FLAG8b4fa8c32 [2020-10-16 05:11:54,458 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:11:54,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2020-10-16 05:11:54,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d54dbdb/3be70d3296a24e4fa44d14bf67b20d35/FLAG8b4fa8c32 [2020-10-16 05:11:54,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d54dbdb/3be70d3296a24e4fa44d14bf67b20d35 [2020-10-16 05:11:54,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:11:54,796 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:11:54,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:11:54,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:11:54,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:11:54,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:11:54" (1/1) ... [2020-10-16 05:11:54,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1738fd3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:54, skipping insertion in model container [2020-10-16 05:11:54,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:11:54" (1/1) ... [2020-10-16 05:11:54,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:11:54,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:11:55,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:11:55,419 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:11:55,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:11:55,605 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:11:55,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55 WrapperNode [2020-10-16 05:11:55,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:11:55,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:11:55,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:11:55,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:11:55,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:11:55,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:11:55,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:11:55,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:11:55,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (1/1) ... [2020-10-16 05:11:55,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:11:55,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:11:55,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:11:55,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:11:55,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (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 [2020-10-16 05:11:55,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:11:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:11:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:11:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:11:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:11:55,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:11:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:11:55,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:11:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:11:55,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:11:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:11:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:11:55,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:11:55,802 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:11:56,179 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:11:56,180 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:11:56,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:11:56 BoogieIcfgContainer [2020-10-16 05:11:56,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:11:56,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:11:56,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:11:56,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:11:56,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:11:54" (1/3) ... [2020-10-16 05:11:56,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7623c1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:11:56, skipping insertion in model container [2020-10-16 05:11:56,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:55" (2/3) ... [2020-10-16 05:11:56,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7623c1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:11:56, skipping insertion in model container [2020-10-16 05:11:56,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:11:56" (3/3) ... [2020-10-16 05:11:56,196 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2020-10-16 05:11:56,208 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:11:56,215 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:11:56,216 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:11:56,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,251 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,251 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,251 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,251 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,255 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,256 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,256 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,261 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,262 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:56,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:11:56,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:11:56,305 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:11:56,305 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:11:56,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:11:56,306 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:11:56,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:11:56,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:11:56,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:11:56,319 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:11:56,359 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-10-16 05:11:56,359 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:56,364 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:11:56,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 71 transitions, 157 flow [2020-10-16 05:11:56,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2020-10-16 05:11:56,373 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:11:56,375 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:11:56,377 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2020-10-16 05:11:56,377 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2020-10-16 05:11:56,400 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2020-10-16 05:11:56,401 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:56,401 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:11:56,403 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:11:57,723 INFO L132 LiptonReduction]: Checked pairs total: 1763 [2020-10-16 05:11:57,724 INFO L134 LiptonReduction]: Total number of compositions: 45 [2020-10-16 05:11:57,728 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1357 [2020-10-16 05:11:57,748 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:11:57,748 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:57,748 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:57,749 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:57,750 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:57,758 INFO L82 PathProgramCache]: Analyzing trace with hash 574415277, now seen corresponding path program 1 times [2020-10-16 05:11:57,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:57,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230744563] [2020-10-16 05:11:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:57,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230744563] [2020-10-16 05:11:57,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:57,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:11:57,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891560539] [2020-10-16 05:11:58,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:11:58,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:58,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:11:58,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:11:58,019 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 116 [2020-10-16 05:11:58,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 05:11:58,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:58,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 116 [2020-10-16 05:11:58,023 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:58,063 INFO L129 PetriNetUnfolder]: 14/44 cut-off events. [2020-10-16 05:11:58,064 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:58,064 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 44 events. 14/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 6 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 74. Up to 29 conditions per place. [2020-10-16 05:11:58,066 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 4 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2020-10-16 05:11:58,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 65 flow [2020-10-16 05:11:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:11:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:11:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2020-10-16 05:11:58,083 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2020-10-16 05:11:58,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2020-10-16 05:11:58,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2020-10-16 05:11:58,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:58,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2020-10-16 05:11:58,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:11:58,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:11:58,105 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:11:58,110 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 290 transitions. [2020-10-16 05:11:58,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 65 flow [2020-10-16 05:11:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 62 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:11:58,116 INFO L241 Difference]: Finished difference. Result has 27 places, 20 transitions, 66 flow [2020-10-16 05:11:58,119 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2020-10-16 05:11:58,120 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:11:58,121 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 66 flow [2020-10-16 05:11:58,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:11:58,121 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:58,121 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:58,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:11:58,122 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:58,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1999007875, now seen corresponding path program 1 times [2020-10-16 05:11:58,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:58,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277721970] [2020-10-16 05:11:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:58,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277721970] [2020-10-16 05:11:58,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:58,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:58,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201668570] [2020-10-16 05:11:58,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:58,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:58,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:58,233 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 116 [2020-10-16 05:11:58,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 66 flow. Second operand 4 states. [2020-10-16 05:11:58,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:58,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 116 [2020-10-16 05:11:58,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:58,290 INFO L129 PetriNetUnfolder]: 8/35 cut-off events. [2020-10-16 05:11:58,291 INFO L130 PetriNetUnfolder]: For 7/16 co-relation queries the response was YES. [2020-10-16 05:11:58,291 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 35 events. 8/35 cut-off events. For 7/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 1 based on Foata normal form. 8/42 useless extension candidates. Maximal degree in co-relation 78. Up to 20 conditions per place. [2020-10-16 05:11:58,292 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 4 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2020-10-16 05:11:58,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 100 flow [2020-10-16 05:11:58,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:58,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2020-10-16 05:11:58,303 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8275862068965517 [2020-10-16 05:11:58,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2020-10-16 05:11:58,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2020-10-16 05:11:58,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:58,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2020-10-16 05:11:58,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:58,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:58,312 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:58,312 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 66 flow. Second operand 4 states and 384 transitions. [2020-10-16 05:11:58,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 100 flow [2020-10-16 05:11:58,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:11:58,315 INFO L241 Difference]: Finished difference. Result has 30 places, 23 transitions, 102 flow [2020-10-16 05:11:58,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2020-10-16 05:11:58,316 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:11:58,317 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 102 flow [2020-10-16 05:11:58,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:58,317 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:58,317 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:58,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:11:58,318 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:58,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:58,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1496101764, now seen corresponding path program 1 times [2020-10-16 05:11:58,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:58,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356829099] [2020-10-16 05:11:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:58,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356829099] [2020-10-16 05:11:58,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:58,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:11:58,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644351410] [2020-10-16 05:11:58,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:11:58,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:58,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:11:58,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:11:58,419 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 116 [2020-10-16 05:11:58,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 102 flow. Second operand 5 states. [2020-10-16 05:11:58,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:58,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 116 [2020-10-16 05:11:58,421 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:58,459 INFO L129 PetriNetUnfolder]: 5/26 cut-off events. [2020-10-16 05:11:58,459 INFO L130 PetriNetUnfolder]: For 30/48 co-relation queries the response was YES. [2020-10-16 05:11:58,460 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 26 events. 5/26 cut-off events. For 30/48 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 13/38 useless extension candidates. Maximal degree in co-relation 73. Up to 14 conditions per place. [2020-10-16 05:11:58,460 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 1 selfloop transitions, 10 changer transitions 0/23 dead transitions. [2020-10-16 05:11:58,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 124 flow [2020-10-16 05:11:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:11:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:11:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 477 transitions. [2020-10-16 05:11:58,464 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8224137931034483 [2020-10-16 05:11:58,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 477 transitions. [2020-10-16 05:11:58,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 477 transitions. [2020-10-16 05:11:58,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:58,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 477 transitions. [2020-10-16 05:11:58,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:11:58,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:11:58,469 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:11:58,470 INFO L185 Difference]: Start difference. First operand has 30 places, 23 transitions, 102 flow. Second operand 5 states and 477 transitions. [2020-10-16 05:11:58,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 124 flow [2020-10-16 05:11:58,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 110 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 05:11:58,472 INFO L241 Difference]: Finished difference. Result has 33 places, 23 transitions, 116 flow [2020-10-16 05:11:58,472 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2020-10-16 05:11:58,473 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:11:58,473 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 116 flow [2020-10-16 05:11:58,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:11:58,473 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:58,473 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:58,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:11:58,474 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:58,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:58,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1509928972, now seen corresponding path program 1 times [2020-10-16 05:11:58,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:58,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279781756] [2020-10-16 05:11:58,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:58,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279781756] [2020-10-16 05:11:58,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:58,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:58,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303795164] [2020-10-16 05:11:58,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:58,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:58,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:58,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:58,552 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 116 [2020-10-16 05:11:58,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 116 flow. Second operand 4 states. [2020-10-16 05:11:58,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:58,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 116 [2020-10-16 05:11:58,553 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:58,580 INFO L129 PetriNetUnfolder]: 10/41 cut-off events. [2020-10-16 05:11:58,580 INFO L130 PetriNetUnfolder]: For 45/50 co-relation queries the response was YES. [2020-10-16 05:11:58,581 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 41 events. 10/41 cut-off events. For 45/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 98 event pairs, 0 based on Foata normal form. 2/41 useless extension candidates. Maximal degree in co-relation 117. Up to 21 conditions per place. [2020-10-16 05:11:58,581 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 3 selfloop transitions, 1 changer transitions 1/24 dead transitions. [2020-10-16 05:11:58,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 24 transitions, 128 flow [2020-10-16 05:11:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2020-10-16 05:11:58,584 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8146551724137931 [2020-10-16 05:11:58,584 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2020-10-16 05:11:58,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2020-10-16 05:11:58,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:58,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2020-10-16 05:11:58,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:58,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:58,587 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:58,587 INFO L185 Difference]: Start difference. First operand has 33 places, 23 transitions, 116 flow. Second operand 4 states and 378 transitions. [2020-10-16 05:11:58,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 24 transitions, 128 flow [2020-10-16 05:11:58,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 102 flow, removed 6 selfloop flow, removed 3 redundant places. [2020-10-16 05:11:58,591 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 97 flow [2020-10-16 05:11:58,592 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2020-10-16 05:11:58,592 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 05:11:58,592 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 97 flow [2020-10-16 05:11:58,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:58,593 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:58,593 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:58,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:11:58,593 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:58,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1670259738, now seen corresponding path program 2 times [2020-10-16 05:11:58,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:58,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506736631] [2020-10-16 05:11:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:58,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506736631] [2020-10-16 05:11:58,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:58,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:58,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7195937] [2020-10-16 05:11:58,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:58,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:58,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:58,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:58,641 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2020-10-16 05:11:58,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 97 flow. Second operand 4 states. [2020-10-16 05:11:58,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:58,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2020-10-16 05:11:58,642 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:58,682 INFO L129 PetriNetUnfolder]: 12/51 cut-off events. [2020-10-16 05:11:58,683 INFO L130 PetriNetUnfolder]: For 34/35 co-relation queries the response was YES. [2020-10-16 05:11:58,683 INFO L80 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 51 events. 12/51 cut-off events. For 34/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 146 event pairs, 0 based on Foata normal form. 2/51 useless extension candidates. Maximal degree in co-relation 125. Up to 19 conditions per place. [2020-10-16 05:11:58,684 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 3 selfloop transitions, 1 changer transitions 1/24 dead transitions. [2020-10-16 05:11:58,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 109 flow [2020-10-16 05:11:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2020-10-16 05:11:58,686 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8232758620689655 [2020-10-16 05:11:58,686 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2020-10-16 05:11:58,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2020-10-16 05:11:58,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:58,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2020-10-16 05:11:58,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:58,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:58,690 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:58,690 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 97 flow. Second operand 4 states and 382 transitions. [2020-10-16 05:11:58,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 109 flow [2020-10-16 05:11:58,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 24 transitions, 106 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:11:58,692 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 101 flow [2020-10-16 05:11:58,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2020-10-16 05:11:58,693 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:11:58,693 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 101 flow [2020-10-16 05:11:58,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:58,693 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:58,693 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:58,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:11:58,693 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash -306993956, now seen corresponding path program 3 times [2020-10-16 05:11:58,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:58,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746911061] [2020-10-16 05:11:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:58,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746911061] [2020-10-16 05:11:58,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:58,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:58,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602394767] [2020-10-16 05:11:58,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:58,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:58,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:58,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:58,751 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2020-10-16 05:11:58,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 101 flow. Second operand 4 states. [2020-10-16 05:11:58,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:58,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2020-10-16 05:11:58,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:58,773 INFO L129 PetriNetUnfolder]: 9/51 cut-off events. [2020-10-16 05:11:58,773 INFO L130 PetriNetUnfolder]: For 30/31 co-relation queries the response was YES. [2020-10-16 05:11:58,774 INFO L80 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 51 events. 9/51 cut-off events. For 30/31 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 0 based on Foata normal form. 2/52 useless extension candidates. Maximal degree in co-relation 129. Up to 16 conditions per place. [2020-10-16 05:11:58,774 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 05:11:58,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 107 flow [2020-10-16 05:11:58,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:58,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2020-10-16 05:11:58,776 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8297413793103449 [2020-10-16 05:11:58,777 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2020-10-16 05:11:58,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2020-10-16 05:11:58,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:58,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2020-10-16 05:11:58,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:58,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:58,780 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:58,780 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 101 flow. Second operand 4 states and 385 transitions. [2020-10-16 05:11:58,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 107 flow [2020-10-16 05:11:58,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:11:58,782 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2020-10-16 05:11:58,782 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2020-10-16 05:11:58,782 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:11:58,782 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2020-10-16 05:11:58,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:58,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:11:58,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:11:58 BasicIcfg [2020-10-16 05:11:58,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:11:58,790 INFO L168 Benchmark]: Toolchain (without parser) took 3993.36 ms. Allocated memory was 250.1 MB in the beginning and 370.1 MB in the end (delta: 120.1 MB). Free memory was 204.6 MB in the beginning and 297.2 MB in the end (delta: -92.6 MB). Peak memory consumption was 27.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:58,790 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:11:58,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.33 ms. Allocated memory was 250.1 MB in the beginning and 310.9 MB in the end (delta: 60.8 MB). Free memory was 204.6 MB in the beginning and 264.3 MB in the end (delta: -59.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:58,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.96 ms. Allocated memory is still 310.9 MB. Free memory was 264.3 MB in the beginning and 261.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:58,793 INFO L168 Benchmark]: Boogie Preprocessor took 32.90 ms. Allocated memory is still 310.9 MB. Free memory was 261.8 MB in the beginning and 259.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:58,794 INFO L168 Benchmark]: RCFGBuilder took 463.18 ms. Allocated memory is still 310.9 MB. Free memory was 259.2 MB in the beginning and 237.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:58,794 INFO L168 Benchmark]: TraceAbstraction took 2603.41 ms. Allocated memory was 310.9 MB in the beginning and 370.1 MB in the end (delta: 59.2 MB). Free memory was 237.4 MB in the beginning and 297.2 MB in the end (delta: -59.8 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:11:58,798 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 810.33 ms. Allocated memory was 250.1 MB in the beginning and 310.9 MB in the end (delta: 60.8 MB). Free memory was 204.6 MB in the beginning and 264.3 MB in the end (delta: -59.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 76.96 ms. Allocated memory is still 310.9 MB. Free memory was 264.3 MB in the beginning and 261.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 32.90 ms. Allocated memory is still 310.9 MB. Free memory was 261.8 MB in the beginning and 259.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 463.18 ms. Allocated memory is still 310.9 MB. Free memory was 259.2 MB in the beginning and 237.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2603.41 ms. Allocated memory was 310.9 MB in the beginning and 370.1 MB in the end (delta: 59.2 MB). Free memory was 237.4 MB in the beginning and 297.2 MB in the end (delta: -59.8 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 525 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 69 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 66 PlacesBefore, 27 PlacesAfterwards, 57 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 45 TotalNumberOfCompositions, 1763 MoverChecksTotal - 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, 70 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 19 SDtfs, 5 SDslu, 3 SDs, 0 SdLazy, 52 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...