/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/ldv-races/race-1_1-join.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 19:00:32,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 19:00:32,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 19:00:32,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 19:00:32,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 19:00:32,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 19:00:32,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 19:00:32,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 19:00:32,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 19:00:32,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 19:00:32,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 19:00:32,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 19:00:32,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 19:00:32,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 19:00:32,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 19:00:32,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 19:00:32,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 19:00:32,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 19:00:32,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 19:00:32,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 19:00:32,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 19:00:32,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 19:00:32,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 19:00:32,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 19:00:32,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 19:00:32,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 19:00:32,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 19:00:32,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 19:00:32,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 19:00:32,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 19:00:32,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 19:00:32,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 19:00:32,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 19:00:32,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 19:00:32,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 19:00:32,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 19:00:32,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 19:00:32,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 19:00:32,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 19:00:32,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 19:00:32,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 19:00:32,941 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 19:00:32,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 19:00:32,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 19:00:32,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 19:00:32,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 19:00:32,973 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 19:00:32,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 19:00:32,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 19:00:32,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 19:00:32,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 19:00:32,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 19:00:32,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 19:00:32,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 19:00:32,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 19:00:32,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 19:00:32,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 19:00:32,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 19:00:32,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 19:00:32,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 19:00:32,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 19:00:32,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 19:00:32,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 19:00:32,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:00:32,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 19:00:32,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 19:00:32,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 19:00:32,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 19:00:32,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 19:00:32,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 19:00:32,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 19:00:32,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 19:00:33,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 19:00:33,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 19:00:33,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 19:00:33,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 19:00:33,282 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 19:00:33,283 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i [2020-10-11 19:00:33,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e786e81/865ebb8f470e422c9661a130ca107df1/FLAGccd7712ce [2020-10-11 19:00:33,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 19:00:33,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i [2020-10-11 19:00:33,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e786e81/865ebb8f470e422c9661a130ca107df1/FLAGccd7712ce [2020-10-11 19:00:34,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e786e81/865ebb8f470e422c9661a130ca107df1 [2020-10-11 19:00:34,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 19:00:34,178 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 19:00:34,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 19:00:34,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 19:00:34,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 19:00:34,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:00:34" (1/1) ... [2020-10-11 19:00:34,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e2bb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:34, skipping insertion in model container [2020-10-11 19:00:34,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:00:34" (1/1) ... [2020-10-11 19:00:34,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 19:00:34,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 19:00:35,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:00:35,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 19:00:35,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:00:35,531 INFO L208 MainTranslator]: Completed translation [2020-10-11 19:00:35,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35 WrapperNode [2020-10-11 19:00:35,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 19:00:35,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 19:00:35,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 19:00:35,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 19:00:35,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 19:00:35,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 19:00:35,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 19:00:35,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 19:00:35,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (1/1) ... [2020-10-11 19:00:35,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 19:00:35,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 19:00:35,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 19:00:35,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 19:00:35,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (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 19:00:35,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 19:00:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 19:00:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 19:00:35,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-11 19:00:35,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 19:00:35,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 19:00:35,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 19:00:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-11 19:00:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-11 19:00:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 19:00:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 19:00:35,805 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 19:00:36,450 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 19:00:36,450 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-11 19:00:36,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:00:36 BoogieIcfgContainer [2020-10-11 19:00:36,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 19:00:36,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 19:00:36,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 19:00:36,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 19:00:36,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:00:34" (1/3) ... [2020-10-11 19:00:36,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f83039b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:00:36, skipping insertion in model container [2020-10-11 19:00:36,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:35" (2/3) ... [2020-10-11 19:00:36,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f83039b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:00:36, skipping insertion in model container [2020-10-11 19:00:36,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:00:36" (3/3) ... [2020-10-11 19:00:36,461 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2020-10-11 19:00:36,470 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 19:00:36,476 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-11 19:00:36,477 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 19:00:36,500 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,501 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,501 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,501 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,502 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,502 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,503 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,503 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,503 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,503 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,504 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,504 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,507 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,508 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,508 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,508 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,508 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,509 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,509 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:00:36,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-11 19:00:36,560 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:00:36,561 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:00:36,561 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:00:36,562 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:00:36,562 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:00:36,562 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:00:36,562 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:00:36,562 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:00:36,577 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 84 transitions, 176 flow [2020-10-11 19:00:36,616 INFO L129 PetriNetUnfolder]: 5/95 cut-off events. [2020-10-11 19:00:36,617 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 19:00:36,621 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 5/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2020-10-11 19:00:36,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 84 transitions, 176 flow [2020-10-11 19:00:36,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 76 transitions, 158 flow [2020-10-11 19:00:36,639 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2020-10-11 19:00:36,639 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:00:36,640 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:36,641 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] [2020-10-11 19:00:36,641 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:36,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:36,647 INFO L82 PathProgramCache]: Analyzing trace with hash 663703428, now seen corresponding path program 1 times [2020-10-11 19:00:36,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:36,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026927002] [2020-10-11 19:00:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:37,086 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 19:00:37,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026927002] [2020-10-11 19:00:37,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:37,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:37,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109071507] [2020-10-11 19:00:37,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:37,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:37,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:37,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:37,452 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 84 [2020-10-11 19:00:37,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 158 flow. Second operand 5 states. [2020-10-11 19:00:37,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:37,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 84 [2020-10-11 19:00:37,456 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:37,557 INFO L129 PetriNetUnfolder]: 0/72 cut-off events. [2020-10-11 19:00:37,557 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 19:00:37,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 72 events. 0/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2020-10-11 19:00:37,559 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 8 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2020-10-11 19:00:37,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 184 flow [2020-10-11 19:00:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 19:00:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 19:00:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 439 transitions. [2020-10-11 19:00:37,580 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7465986394557823 [2020-10-11 19:00:37,581 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 439 transitions. [2020-10-11 19:00:37,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 439 transitions. [2020-10-11 19:00:37,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:37,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 439 transitions. [2020-10-11 19:00:37,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 19:00:37,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 19:00:37,601 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 19:00:37,603 INFO L185 Difference]: Start difference. First operand has 78 places, 76 transitions, 158 flow. Second operand 7 states and 439 transitions. [2020-10-11 19:00:37,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 184 flow [2020-10-11 19:00:37,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 19:00:37,614 INFO L241 Difference]: Finished difference. Result has 80 places, 72 transitions, 164 flow [2020-10-11 19:00:37,617 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2020-10-11 19:00:37,618 INFO L341 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2020-10-11 19:00:37,618 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 164 flow [2020-10-11 19:00:37,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:37,618 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:37,618 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 19:00:37,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 19:00:37,619 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash -611752670, now seen corresponding path program 1 times [2020-10-11 19:00:37,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:37,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485007769] [2020-10-11 19:00:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:37,825 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 19:00:37,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485007769] [2020-10-11 19:00:37,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:37,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:37,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611059561] [2020-10-11 19:00:37,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:37,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:37,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:37,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:38,171 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 84 [2020-10-11 19:00:38,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 164 flow. Second operand 5 states. [2020-10-11 19:00:38,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:38,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 84 [2020-10-11 19:00:38,172 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:38,229 INFO L129 PetriNetUnfolder]: 0/70 cut-off events. [2020-10-11 19:00:38,229 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2020-10-11 19:00:38,230 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 70 events. 0/70 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2020-10-11 19:00:38,230 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 10 selfloop transitions, 2 changer transitions 6/70 dead transitions. [2020-10-11 19:00:38,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 70 transitions, 192 flow [2020-10-11 19:00:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 19:00:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 19:00:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 377 transitions. [2020-10-11 19:00:38,234 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.748015873015873 [2020-10-11 19:00:38,235 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 377 transitions. [2020-10-11 19:00:38,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 377 transitions. [2020-10-11 19:00:38,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:38,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 377 transitions. [2020-10-11 19:00:38,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 19:00:38,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 19:00:38,239 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 19:00:38,239 INFO L185 Difference]: Start difference. First operand has 80 places, 72 transitions, 164 flow. Second operand 6 states and 377 transitions. [2020-10-11 19:00:38,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 70 transitions, 192 flow [2020-10-11 19:00:38,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 174 flow, removed 0 selfloop flow, removed 6 redundant places. [2020-10-11 19:00:38,243 INFO L241 Difference]: Finished difference. Result has 77 places, 64 transitions, 134 flow [2020-10-11 19:00:38,243 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2020-10-11 19:00:38,244 INFO L341 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2020-10-11 19:00:38,244 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 134 flow [2020-10-11 19:00:38,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:38,245 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:38,245 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, 1] [2020-10-11 19:00:38,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 19:00:38,245 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:38,246 INFO L82 PathProgramCache]: Analyzing trace with hash -276527378, now seen corresponding path program 1 times [2020-10-11 19:00:38,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:38,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053973717] [2020-10-11 19:00:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:38,337 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 19:00:38,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053973717] [2020-10-11 19:00:38,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:38,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:38,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203855638] [2020-10-11 19:00:38,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:38,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:38,445 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2020-10-11 19:00:38,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 134 flow. Second operand 5 states. [2020-10-11 19:00:38,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:38,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2020-10-11 19:00:38,446 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:38,491 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2020-10-11 19:00:38,491 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:00:38,492 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-11 19:00:38,492 INFO L132 encePairwiseOnDemand]: 79/84 looper letters, 5 selfloop transitions, 4 changer transitions 5/62 dead transitions. [2020-10-11 19:00:38,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 148 flow [2020-10-11 19:00:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 19:00:38,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 19:00:38,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2020-10-11 19:00:38,495 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2020-10-11 19:00:38,495 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 424 transitions. [2020-10-11 19:00:38,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 424 transitions. [2020-10-11 19:00:38,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:38,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 424 transitions. [2020-10-11 19:00:38,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 19:00:38,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 19:00:38,498 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 19:00:38,498 INFO L185 Difference]: Start difference. First operand has 77 places, 64 transitions, 134 flow. Second operand 6 states and 424 transitions. [2020-10-11 19:00:38,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 148 flow [2020-10-11 19:00:38,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 19:00:38,501 INFO L241 Difference]: Finished difference. Result has 69 places, 57 transitions, 124 flow [2020-10-11 19:00:38,502 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2020-10-11 19:00:38,502 INFO L341 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2020-10-11 19:00:38,502 INFO L481 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 124 flow [2020-10-11 19:00:38,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:38,502 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:00:38,503 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, 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 19:00:38,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 19:00:38,503 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:00:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:00:38,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1351678022, now seen corresponding path program 1 times [2020-10-11 19:00:38,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:00:38,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574915807] [2020-10-11 19:00:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:00:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:00:38,606 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 19:00:38,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574915807] [2020-10-11 19:00:38,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:00:38,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:00:38,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121671986] [2020-10-11 19:00:38,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:00:38,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:00:38,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:00:38,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:00:38,809 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 84 [2020-10-11 19:00:38,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 124 flow. Second operand 5 states. [2020-10-11 19:00:38,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:00:38,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 84 [2020-10-11 19:00:38,810 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:00:38,846 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2020-10-11 19:00:38,846 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-11 19:00:38,847 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 55 events. 0/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2020-10-11 19:00:38,847 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2020-10-11 19:00:38,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 142 flow [2020-10-11 19:00:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 19:00:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 19:00:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 372 transitions. [2020-10-11 19:00:38,850 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2020-10-11 19:00:38,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 372 transitions. [2020-10-11 19:00:38,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 372 transitions. [2020-10-11 19:00:38,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:00:38,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 372 transitions. [2020-10-11 19:00:38,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 19:00:38,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 19:00:38,853 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 19:00:38,853 INFO L185 Difference]: Start difference. First operand has 69 places, 57 transitions, 124 flow. Second operand 6 states and 372 transitions. [2020-10-11 19:00:38,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 142 flow [2020-10-11 19:00:38,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 135 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 19:00:38,855 INFO L241 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2020-10-11 19:00:38,855 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2020-10-11 19:00:38,856 INFO L341 CegarLoopForPetriNet]: 78 programPoint places, -15 predicate places. [2020-10-11 19:00:38,856 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2020-10-11 19:00:38,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:00:38,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 19:00:38,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:00:38 BasicIcfg [2020-10-11 19:00:38,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 19:00:38,866 INFO L168 Benchmark]: Toolchain (without parser) took 4687.87 ms. Allocated memory was 253.2 MB in the beginning and 369.6 MB in the end (delta: 116.4 MB). Free memory was 207.1 MB in the beginning and 175.1 MB in the end (delta: 32.0 MB). Peak memory consumption was 148.4 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:38,867 INFO L168 Benchmark]: CDTParser took 1.31 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 19:00:38,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1354.36 ms. Allocated memory was 253.2 MB in the beginning and 358.6 MB in the end (delta: 105.4 MB). Free memory was 204.6 MB in the beginning and 325.1 MB in the end (delta: -120.5 MB). Peak memory consumption was 108.6 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:38,869 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.13 ms. Allocated memory is still 358.6 MB. Free memory was 325.1 MB in the beginning and 321.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:38,870 INFO L168 Benchmark]: Boogie Preprocessor took 45.33 ms. Allocated memory is still 358.6 MB. Free memory was 321.8 MB in the beginning and 318.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:38,871 INFO L168 Benchmark]: RCFGBuilder took 750.33 ms. Allocated memory is still 358.6 MB. Free memory was 318.4 MB in the beginning and 279.0 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:38,872 INFO L168 Benchmark]: TraceAbstraction took 2409.69 ms. Allocated memory was 358.6 MB in the beginning and 369.6 MB in the end (delta: 11.0 MB). Free memory was 279.0 MB in the beginning and 175.1 MB in the end (delta: 103.9 MB). Peak memory consumption was 114.9 MB. Max. memory is 14.2 GB. [2020-10-11 19:00:38,876 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.31 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1354.36 ms. Allocated memory was 253.2 MB in the beginning and 358.6 MB in the end (delta: 105.4 MB). Free memory was 204.6 MB in the beginning and 325.1 MB in the end (delta: -120.5 MB). Peak memory consumption was 108.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 122.13 ms. Allocated memory is still 358.6 MB. Free memory was 325.1 MB in the beginning and 321.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 45.33 ms. Allocated memory is still 358.6 MB. Free memory was 321.8 MB in the beginning and 318.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.2 GB. * RCFGBuilder took 750.33 ms. Allocated memory is still 358.6 MB. Free memory was 318.4 MB in the beginning and 279.0 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2409.69 ms. Allocated memory was 358.6 MB in the beginning and 369.6 MB in the end (delta: 11.0 MB). Free memory was 279.0 MB in the beginning and 175.1 MB in the end (delta: 103.9 MB). Peak memory consumption was 114.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1682]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1682]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1682]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1682]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 4 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: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 126 SDslu, 176 SDs, 0 SdLazy, 262 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=1, 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 7318 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...