/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:44:14,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:44:14,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:44:14,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:44:14,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:44:14,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:44:14,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:44:14,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:44:14,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:44:14,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:44:14,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:44:14,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:44:14,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:44:14,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:44:14,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:44:14,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:44:14,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:44:14,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:44:14,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:44:14,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:44:14,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:44:14,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:44:14,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:44:14,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:44:14,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:44:14,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:44:14,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:44:14,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:44:14,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:44:14,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:44:14,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:44:14,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:44:14,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:44:14,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:44:14,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:44:14,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:44:14,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:44:14,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:44:14,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:44:14,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:44:14,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:44:14,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:44:14,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:44:14,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:44:14,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:44:14,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:44:14,626 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:44:14,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:44:14,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:44:14,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:44:14,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:44:14,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:44:14,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:44:14,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:44:14,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:44:14,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:44:14,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:44:14,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:44:14,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:44:14,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:44:14,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:44:14,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:44:14,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:44:14,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:44:14,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:44:14,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:44:14,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:44:14,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:44:14,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:44:14,634 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:44:14,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:44:14,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:44:14,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:44:14,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:44:14,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:44:14,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:44:14,966 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:44:14,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-10-11 18:44:15,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c2148f3/7321d0d5fbe14897a882f542f64647d6/FLAG555548832 [2020-10-11 18:44:15,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:44:15,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2020-10-11 18:44:15,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c2148f3/7321d0d5fbe14897a882f542f64647d6/FLAG555548832 [2020-10-11 18:44:15,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8c2148f3/7321d0d5fbe14897a882f542f64647d6 [2020-10-11 18:44:15,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:44:15,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:44:15,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:44:15,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:44:15,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:44:15,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:44:15" (1/1) ... [2020-10-11 18:44:15,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416d0f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:15, skipping insertion in model container [2020-10-11 18:44:15,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:44:15" (1/1) ... [2020-10-11 18:44:15,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:44:15,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:44:16,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:44:16,364 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:44:16,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:44:16,491 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:44:16,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16 WrapperNode [2020-10-11 18:44:16,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:44:16,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:44:16,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:44:16,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:44:16,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:44:16,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:44:16,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:44:16,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:44:16,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (1/1) ... [2020-10-11 18:44:16,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:44:16,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:44:16,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:44:16,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:44:16,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (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 [2020-10-11 18:44:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:44:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:44:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:44:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:44:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:44:16,645 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:44:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:44:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:44:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:44:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:44:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:44:16,648 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:44:17,046 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:44:17,046 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:44:17,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:44:17 BoogieIcfgContainer [2020-10-11 18:44:17,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:44:17,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:44:17,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:44:17,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:44:17,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:44:15" (1/3) ... [2020-10-11 18:44:17,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4368e108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:44:17, skipping insertion in model container [2020-10-11 18:44:17,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:16" (2/3) ... [2020-10-11 18:44:17,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4368e108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:44:17, skipping insertion in model container [2020-10-11 18:44:17,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:44:17" (3/3) ... [2020-10-11 18:44:17,058 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-10-11 18:44:17,071 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:44:17,079 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:44:17,081 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:44:17,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,115 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,116 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,116 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,116 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,124 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,125 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,125 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:17,145 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 18:44:17,168 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:44:17,168 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:44:17,168 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:44:17,168 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:44:17,169 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:44:17,169 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:44:17,169 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:44:17,169 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:44:17,182 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 54 transitions, 118 flow [2020-10-11 18:44:17,216 INFO L129 PetriNetUnfolder]: 2/52 cut-off events. [2020-10-11 18:44:17,216 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:44:17,221 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 2/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-11 18:44:17,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 54 transitions, 118 flow [2020-10-11 18:44:17,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 43 transitions, 92 flow [2020-10-11 18:44:17,246 INFO L129 PetriNetUnfolder]: 1/42 cut-off events. [2020-10-11 18:44:17,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:44:17,247 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:17,248 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:44:17,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:17,255 INFO L82 PathProgramCache]: Analyzing trace with hash -644918262, now seen corresponding path program 1 times [2020-10-11 18:44:17,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:17,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188542116] [2020-10-11 18:44:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:17,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:44:17,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188542116] [2020-10-11 18:44:17,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:17,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:17,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407342217] [2020-10-11 18:44:17,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:17,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:17,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:17,834 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 54 [2020-10-11 18:44:17,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 92 flow. Second operand 6 states. [2020-10-11 18:44:17,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:17,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 54 [2020-10-11 18:44:17,839 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:18,020 INFO L129 PetriNetUnfolder]: 24/136 cut-off events. [2020-10-11 18:44:18,021 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:44:18,022 INFO L80 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 136 events. 24/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 533 event pairs, 5 based on Foata normal form. 6/139 useless extension candidates. Maximal degree in co-relation 183. Up to 31 conditions per place. [2020-10-11 18:44:18,025 INFO L132 encePairwiseOnDemand]: 46/54 looper letters, 8 selfloop transitions, 3 changer transitions 19/63 dead transitions. [2020-10-11 18:44:18,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 192 flow [2020-10-11 18:44:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 421 transitions. [2020-10-11 18:44:18,045 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8662551440329218 [2020-10-11 18:44:18,046 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 421 transitions. [2020-10-11 18:44:18,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 421 transitions. [2020-10-11 18:44:18,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:18,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 421 transitions. [2020-10-11 18:44:18,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:18,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:18,066 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:18,069 INFO L185 Difference]: Start difference. First operand has 49 places, 43 transitions, 92 flow. Second operand 9 states and 421 transitions. [2020-10-11 18:44:18,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 192 flow [2020-10-11 18:44:18,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 18:44:18,080 INFO L241 Difference]: Finished difference. Result has 62 places, 44 transitions, 131 flow [2020-10-11 18:44:18,083 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=131, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2020-10-11 18:44:18,084 INFO L341 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2020-10-11 18:44:18,085 INFO L481 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 131 flow [2020-10-11 18:44:18,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:18,085 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:18,085 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:44:18,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:44:18,086 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash 732322507, now seen corresponding path program 1 times [2020-10-11 18:44:18,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:18,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828798230] [2020-10-11 18:44:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:44:18,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828798230] [2020-10-11 18:44:18,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:18,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:18,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314433720] [2020-10-11 18:44:18,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:18,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:18,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:18,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:18,425 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 54 [2020-10-11 18:44:18,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 131 flow. Second operand 6 states. [2020-10-11 18:44:18,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:18,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 54 [2020-10-11 18:44:18,426 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:18,566 INFO L129 PetriNetUnfolder]: 48/182 cut-off events. [2020-10-11 18:44:18,567 INFO L130 PetriNetUnfolder]: For 175/183 co-relation queries the response was YES. [2020-10-11 18:44:18,569 INFO L80 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 182 events. 48/182 cut-off events. For 175/183 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 759 event pairs, 18 based on Foata normal form. 6/180 useless extension candidates. Maximal degree in co-relation 404. Up to 52 conditions per place. [2020-10-11 18:44:18,570 INFO L132 encePairwiseOnDemand]: 47/54 looper letters, 8 selfloop transitions, 3 changer transitions 19/65 dead transitions. [2020-10-11 18:44:18,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 251 flow [2020-10-11 18:44:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 419 transitions. [2020-10-11 18:44:18,574 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8621399176954733 [2020-10-11 18:44:18,574 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 419 transitions. [2020-10-11 18:44:18,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 419 transitions. [2020-10-11 18:44:18,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:18,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 419 transitions. [2020-10-11 18:44:18,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:18,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:18,581 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:18,581 INFO L185 Difference]: Start difference. First operand has 62 places, 44 transitions, 131 flow. Second operand 9 states and 419 transitions. [2020-10-11 18:44:18,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 251 flow [2020-10-11 18:44:18,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 234 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:44:18,588 INFO L241 Difference]: Finished difference. Result has 67 places, 46 transitions, 165 flow [2020-10-11 18:44:18,588 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=165, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2020-10-11 18:44:18,589 INFO L341 CegarLoopForPetriNet]: 49 programPoint places, 18 predicate places. [2020-10-11 18:44:18,589 INFO L481 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 165 flow [2020-10-11 18:44:18,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:18,589 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:18,589 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:44:18,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:44:18,590 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:18,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:18,590 INFO L82 PathProgramCache]: Analyzing trace with hash -538665693, now seen corresponding path program 1 times [2020-10-11 18:44:18,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:18,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879111955] [2020-10-11 18:44:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:44:18,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879111955] [2020-10-11 18:44:18,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:18,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:18,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50265963] [2020-10-11 18:44:18,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:18,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:18,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:18,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:18,797 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 54 [2020-10-11 18:44:18,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 165 flow. Second operand 6 states. [2020-10-11 18:44:18,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:18,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 54 [2020-10-11 18:44:18,798 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:18,921 INFO L129 PetriNetUnfolder]: 29/176 cut-off events. [2020-10-11 18:44:18,921 INFO L130 PetriNetUnfolder]: For 375/401 co-relation queries the response was YES. [2020-10-11 18:44:18,923 INFO L80 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 176 events. 29/176 cut-off events. For 375/401 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 830 event pairs, 13 based on Foata normal form. 7/175 useless extension candidates. Maximal degree in co-relation 492. Up to 34 conditions per place. [2020-10-11 18:44:18,925 INFO L132 encePairwiseOnDemand]: 48/54 looper letters, 12 selfloop transitions, 3 changer transitions 10/60 dead transitions. [2020-10-11 18:44:18,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 313 flow [2020-10-11 18:44:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 413 transitions. [2020-10-11 18:44:18,927 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8497942386831275 [2020-10-11 18:44:18,927 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 413 transitions. [2020-10-11 18:44:18,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 413 transitions. [2020-10-11 18:44:18,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:18,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 413 transitions. [2020-10-11 18:44:18,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:18,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:18,931 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:18,931 INFO L185 Difference]: Start difference. First operand has 67 places, 46 transitions, 165 flow. Second operand 9 states and 413 transitions. [2020-10-11 18:44:18,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 313 flow [2020-10-11 18:44:18,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 282 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-11 18:44:18,938 INFO L241 Difference]: Finished difference. Result has 72 places, 46 transitions, 177 flow [2020-10-11 18:44:18,939 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=177, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2020-10-11 18:44:18,939 INFO L341 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2020-10-11 18:44:18,939 INFO L481 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 177 flow [2020-10-11 18:44:18,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:18,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:18,940 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:44:18,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:44:18,940 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:18,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:18,941 INFO L82 PathProgramCache]: Analyzing trace with hash 758719751, now seen corresponding path program 1 times [2020-10-11 18:44:18,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:18,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808047577] [2020-10-11 18:44:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:44:19,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808047577] [2020-10-11 18:44:19,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:19,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:19,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508029871] [2020-10-11 18:44:19,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:19,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:19,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:19,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:19,194 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 54 [2020-10-11 18:44:19,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 177 flow. Second operand 6 states. [2020-10-11 18:44:19,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:19,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 54 [2020-10-11 18:44:19,195 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:19,343 INFO L129 PetriNetUnfolder]: 25/207 cut-off events. [2020-10-11 18:44:19,343 INFO L130 PetriNetUnfolder]: For 728/794 co-relation queries the response was YES. [2020-10-11 18:44:19,345 INFO L80 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 207 events. 25/207 cut-off events. For 728/794 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1129 event pairs, 9 based on Foata normal form. 6/208 useless extension candidates. Maximal degree in co-relation 615. Up to 36 conditions per place. [2020-10-11 18:44:19,346 INFO L132 encePairwiseOnDemand]: 48/54 looper letters, 12 selfloop transitions, 3 changer transitions 11/60 dead transitions. [2020-10-11 18:44:19,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 341 flow [2020-10-11 18:44:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 413 transitions. [2020-10-11 18:44:19,349 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8497942386831275 [2020-10-11 18:44:19,349 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 413 transitions. [2020-10-11 18:44:19,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 413 transitions. [2020-10-11 18:44:19,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:19,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 413 transitions. [2020-10-11 18:44:19,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:19,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:19,352 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:19,352 INFO L185 Difference]: Start difference. First operand has 72 places, 46 transitions, 177 flow. Second operand 9 states and 413 transitions. [2020-10-11 18:44:19,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 341 flow [2020-10-11 18:44:19,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 284 flow, removed 27 selfloop flow, removed 7 redundant places. [2020-10-11 18:44:19,359 INFO L241 Difference]: Finished difference. Result has 74 places, 45 transitions, 175 flow [2020-10-11 18:44:19,359 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=175, PETRI_PLACES=74, PETRI_TRANSITIONS=45} [2020-10-11 18:44:19,359 INFO L341 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2020-10-11 18:44:19,359 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 45 transitions, 175 flow [2020-10-11 18:44:19,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:19,360 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:19,360 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:44:19,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:44:19,360 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:19,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:19,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2081607436, now seen corresponding path program 1 times [2020-10-11 18:44:19,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:19,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070564641] [2020-10-11 18:44:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:44:19,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070564641] [2020-10-11 18:44:19,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:19,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:19,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045586667] [2020-10-11 18:44:19,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:19,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:19,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:19,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:19,530 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 54 [2020-10-11 18:44:19,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 45 transitions, 175 flow. Second operand 6 states. [2020-10-11 18:44:19,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:19,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 54 [2020-10-11 18:44:19,531 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:19,669 INFO L129 PetriNetUnfolder]: 78/280 cut-off events. [2020-10-11 18:44:19,669 INFO L130 PetriNetUnfolder]: For 236/239 co-relation queries the response was YES. [2020-10-11 18:44:19,671 INFO L80 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 280 events. 78/280 cut-off events. For 236/239 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1663 event pairs, 6 based on Foata normal form. 10/278 useless extension candidates. Maximal degree in co-relation 565. Up to 78 conditions per place. [2020-10-11 18:44:19,672 INFO L132 encePairwiseOnDemand]: 46/54 looper letters, 6 selfloop transitions, 5 changer transitions 17/64 dead transitions. [2020-10-11 18:44:19,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 269 flow [2020-10-11 18:44:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 408 transitions. [2020-10-11 18:44:19,675 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2020-10-11 18:44:19,675 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 408 transitions. [2020-10-11 18:44:19,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 408 transitions. [2020-10-11 18:44:19,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:19,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 408 transitions. [2020-10-11 18:44:19,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:19,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:19,678 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:19,678 INFO L185 Difference]: Start difference. First operand has 74 places, 45 transitions, 175 flow. Second operand 9 states and 408 transitions. [2020-10-11 18:44:19,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 269 flow [2020-10-11 18:44:19,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 248 flow, removed 9 selfloop flow, removed 7 redundant places. [2020-10-11 18:44:19,682 INFO L241 Difference]: Finished difference. Result has 74 places, 47 transitions, 198 flow [2020-10-11 18:44:19,683 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=74, PETRI_TRANSITIONS=47} [2020-10-11 18:44:19,683 INFO L341 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2020-10-11 18:44:19,683 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 47 transitions, 198 flow [2020-10-11 18:44:19,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:19,683 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:19,684 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:44:19,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:44:19,684 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:19,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1413726839, now seen corresponding path program 1 times [2020-10-11 18:44:19,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:19,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870255459] [2020-10-11 18:44:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:19,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:44:19,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870255459] [2020-10-11 18:44:19,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:19,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:44:19,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657015566] [2020-10-11 18:44:19,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:44:19,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:19,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:44:19,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:44:19,940 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 54 [2020-10-11 18:44:19,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 47 transitions, 198 flow. Second operand 7 states. [2020-10-11 18:44:19,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:19,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 54 [2020-10-11 18:44:19,941 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:20,079 INFO L129 PetriNetUnfolder]: 24/150 cut-off events. [2020-10-11 18:44:20,080 INFO L130 PetriNetUnfolder]: For 231/240 co-relation queries the response was YES. [2020-10-11 18:44:20,081 INFO L80 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 150 events. 24/150 cut-off events. For 231/240 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 721 event pairs, 0 based on Foata normal form. 14/163 useless extension candidates. Maximal degree in co-relation 434. Up to 49 conditions per place. [2020-10-11 18:44:20,081 INFO L132 encePairwiseOnDemand]: 46/54 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2020-10-11 18:44:20,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 52 transitions, 275 flow [2020-10-11 18:44:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:44:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:44:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 444 transitions. [2020-10-11 18:44:20,084 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2020-10-11 18:44:20,084 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 444 transitions. [2020-10-11 18:44:20,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 444 transitions. [2020-10-11 18:44:20,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:20,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 444 transitions. [2020-10-11 18:44:20,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:44:20,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:44:20,087 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:44:20,087 INFO L185 Difference]: Start difference. First operand has 74 places, 47 transitions, 198 flow. Second operand 10 states and 444 transitions. [2020-10-11 18:44:20,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 52 transitions, 275 flow [2020-10-11 18:44:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 222 flow, removed 19 selfloop flow, removed 13 redundant places. [2020-10-11 18:44:20,090 INFO L241 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2020-10-11 18:44:20,090 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2020-10-11 18:44:20,091 INFO L341 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2020-10-11 18:44:20,091 INFO L481 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2020-10-11 18:44:20,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:44:20,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:44:20,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:44:20 BasicIcfg [2020-10-11 18:44:20,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:44:20,101 INFO L168 Benchmark]: Toolchain (without parser) took 4237.05 ms. Allocated memory was 252.7 MB in the beginning and 373.3 MB in the end (delta: 120.6 MB). Free memory was 207.9 MB in the beginning and 206.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 122.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:20,101 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:44:20,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.58 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 207.9 MB in the beginning and 272.2 MB in the end (delta: -64.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:20,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 318.2 MB. Free memory was 272.2 MB in the beginning and 269.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:20,104 INFO L168 Benchmark]: Boogie Preprocessor took 26.65 ms. Allocated memory is still 318.2 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:44:20,104 INFO L168 Benchmark]: RCFGBuilder took 479.72 ms. Allocated memory is still 318.2 MB. Free memory was 269.1 MB in the beginning and 247.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:20,105 INFO L168 Benchmark]: TraceAbstraction took 3047.78 ms. Allocated memory was 318.2 MB in the beginning and 373.3 MB in the end (delta: 55.1 MB). Free memory was 247.3 MB in the beginning and 206.0 MB in the end (delta: 41.3 MB). Peak memory consumption was 96.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:20,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 627.58 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 207.9 MB in the beginning and 272.2 MB in the end (delta: -64.4 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 318.2 MB. Free memory was 272.2 MB in the beginning and 269.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.65 ms. Allocated memory is still 318.2 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 479.72 ms. Allocated memory is still 318.2 MB. Free memory was 269.1 MB in the beginning and 247.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3047.78 ms. Allocated memory was 318.2 MB in the beginning and 373.3 MB in the end (delta: 55.1 MB). Free memory was 247.3 MB in the beginning and 206.0 MB in the end (delta: 41.3 MB). Peak memory consumption was 96.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 3 procedures, 53 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: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 144 SDslu, 283 SDs, 0 SdLazy, 307 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=5, 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, 0.6s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 16758 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...