/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-2_5-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 18:30:17,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 18:30:17,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 18:30:17,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 18:30:17,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 18:30:17,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 18:30:17,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 18:30:17,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 18:30:17,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 18:30:17,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 18:30:17,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 18:30:17,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 18:30:17,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 18:30:17,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 18:30:17,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 18:30:17,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 18:30:17,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 18:30:17,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 18:30:17,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 18:30:17,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 18:30:17,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 18:30:17,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 18:30:17,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 18:30:17,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 18:30:17,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 18:30:17,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 18:30:17,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 18:30:17,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 18:30:17,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 18:30:17,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 18:30:17,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 18:30:17,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 18:30:17,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 18:30:17,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 18:30:17,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 18:30:17,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 18:30:17,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 18:30:17,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 18:30:17,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 18:30:17,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 18:30:17,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 18:30:17,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 18:30:17,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 18:30:17,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 18:30:17,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 18:30:17,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 18:30:17,619 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 18:30:17,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 18:30:17,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 18:30:17,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 18:30:17,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 18:30:17,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 18:30:17,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 18:30:17,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 18:30:17,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 18:30:17,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 18:30:17,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 18:30:17,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 18:30:17,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 18:30:17,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 18:30:17,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 18:30:17,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 18:30:17,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 18:30:17,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 18:30:17,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 18:30:17,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 18:30:17,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 18:30:17,624 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 18:30:17,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 18:30:17,625 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 18:30:17,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 18:30:17,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 18:30:17,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 18:30:17,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 18:30:17,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 18:30:17,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 18:30:17,965 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 18:30:17,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2020-10-09 18:30:18,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93087cbb4/46187ea87f344c59813f8782621628e0/FLAG1caed760d [2020-10-09 18:30:18,646 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 18:30:18,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_5-container_of.i [2020-10-09 18:30:18,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93087cbb4/46187ea87f344c59813f8782621628e0/FLAG1caed760d [2020-10-09 18:30:18,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93087cbb4/46187ea87f344c59813f8782621628e0 [2020-10-09 18:30:18,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 18:30:18,867 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 18:30:18,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 18:30:18,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 18:30:18,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 18:30:18,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:30:18" (1/1) ... [2020-10-09 18:30:18,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@852acc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:18, skipping insertion in model container [2020-10-09 18:30:18,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 06:30:18" (1/1) ... [2020-10-09 18:30:18,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 18:30:18,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 18:30:19,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:30:19,677 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 18:30:19,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 18:30:20,073 INFO L208 MainTranslator]: Completed translation [2020-10-09 18:30:20,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20 WrapperNode [2020-10-09 18:30:20,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 18:30:20,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 18:30:20,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 18:30:20,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 18:30:20,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 18:30:20,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 18:30:20,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 18:30:20,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 18:30:20,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (1/1) ... [2020-10-09 18:30:20,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 18:30:20,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 18:30:20,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 18:30:20,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 18:30:20,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (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 [2020-10-09 18:30:20,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 18:30:20,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-09 18:30:20,290 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-09 18:30:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-09 18:30:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 18:30:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 18:30:20,291 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2020-10-09 18:30:20,291 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2020-10-09 18:30:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 18:30:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 18:30:20,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-09 18:30:20,294 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 18:30:20,890 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 18:30:20,890 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-09 18:30:20,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:30:20 BoogieIcfgContainer [2020-10-09 18:30:20,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 18:30:20,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 18:30:20,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 18:30:20,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 18:30:20,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 06:30:18" (1/3) ... [2020-10-09 18:30:20,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f66a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:30:20, skipping insertion in model container [2020-10-09 18:30:20,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 06:30:20" (2/3) ... [2020-10-09 18:30:20,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f66a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 06:30:20, skipping insertion in model container [2020-10-09 18:30:20,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 06:30:20" (3/3) ... [2020-10-09 18:30:20,900 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_5-container_of.i [2020-10-09 18:30:20,911 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 18:30:20,918 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-09 18:30:20,919 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 18:30:20,950 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,951 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,951 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,951 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,951 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,951 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,952 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,952 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,952 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,952 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,952 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,953 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,953 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,953 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,953 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,953 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,954 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,954 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,954 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,954 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,954 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,955 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,955 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,955 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,956 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,956 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,956 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,956 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,956 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,956 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,957 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,957 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,957 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,957 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,958 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,958 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,958 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,958 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,958 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,959 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,959 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,959 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,959 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,960 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,960 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,960 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,960 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,960 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,960 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,961 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,961 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,961 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,961 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,961 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,962 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,962 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,962 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,962 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,962 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,963 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,963 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,963 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,963 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,964 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,964 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,964 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,964 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,964 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,965 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,965 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,969 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,969 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,969 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,969 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,970 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,970 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,970 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,970 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,970 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,971 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,971 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,971 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,979 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,979 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,979 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,979 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,980 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,980 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,980 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,980 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,981 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,981 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,981 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:20,981 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 18:30:21,007 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-09 18:30:21,028 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 18:30:21,028 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 18:30:21,029 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 18:30:21,029 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 18:30:21,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 18:30:21,029 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 18:30:21,029 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 18:30:21,029 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 18:30:21,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 153 places, 157 transitions, 336 flow [2020-10-09 18:30:21,122 INFO L129 PetriNetUnfolder]: 13/215 cut-off events. [2020-10-09 18:30:21,122 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-09 18:30:21,129 INFO L80 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 215 events. 13/215 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 443 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 97. Up to 4 conditions per place. [2020-10-09 18:30:21,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 157 transitions, 336 flow [2020-10-09 18:30:21,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 146 transitions, 310 flow [2020-10-09 18:30:21,157 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2020-10-09 18:30:21,158 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 18:30:21,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:30:21,159 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] [2020-10-09 18:30:21,160 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:30:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:30:21,166 INFO L82 PathProgramCache]: Analyzing trace with hash 285255635, now seen corresponding path program 1 times [2020-10-09 18:30:21,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:30:21,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011696067] [2020-10-09 18:30:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 18:30:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:30:21,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:30:21,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:30:21,386 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-09 18:30:21,386 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:21,398 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:21,398 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:21,399 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-09 18:30:21,438 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-10-09 18:30:21,439 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2020-10-09 18:30:21,441 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:21,446 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:21,447 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:21,447 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2020-10-09 18:30:21,473 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-10-09 18:30:21,474 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 14 [2020-10-09 18:30:21,476 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:21,478 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:21,478 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:21,478 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:5 [2020-10-09 18:30:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:21,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:30:21,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 18:30:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:21,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011696067] [2020-10-09 18:30:21,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:30:21,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2020-10-09 18:30:21,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497741327] [2020-10-09 18:30:21,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 18:30:21,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:30:21,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 18:30:21,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-09 18:30:22,686 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 157 [2020-10-09 18:30:22,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 310 flow. Second operand 7 states. [2020-10-09 18:30:22,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:30:22,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 157 [2020-10-09 18:30:22,691 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:30:23,204 INFO L129 PetriNetUnfolder]: 356/1194 cut-off events. [2020-10-09 18:30:23,204 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-09 18:30:23,210 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 1194 events. 356/1194 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8038 event pairs, 98 based on Foata normal form. 40/1226 useless extension candidates. Maximal degree in co-relation 1645. Up to 418 conditions per place. [2020-10-09 18:30:23,219 INFO L132 encePairwiseOnDemand]: 139/157 looper letters, 65 selfloop transitions, 41 changer transitions 0/205 dead transitions. [2020-10-09 18:30:23,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 205 transitions, 640 flow [2020-10-09 18:30:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 18:30:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-09 18:30:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1625 transitions. [2020-10-09 18:30:23,245 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7393084622383985 [2020-10-09 18:30:23,246 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1625 transitions. [2020-10-09 18:30:23,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1625 transitions. [2020-10-09 18:30:23,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:30:23,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1625 transitions. [2020-10-09 18:30:23,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-09 18:30:23,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-09 18:30:23,272 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-09 18:30:23,275 INFO L185 Difference]: Start difference. First operand has 144 places, 146 transitions, 310 flow. Second operand 14 states and 1625 transitions. [2020-10-09 18:30:23,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 205 transitions, 640 flow [2020-10-09 18:30:23,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 205 transitions, 628 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 18:30:23,288 INFO L241 Difference]: Finished difference. Result has 157 places, 201 transitions, 581 flow [2020-10-09 18:30:23,291 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=581, PETRI_PLACES=157, PETRI_TRANSITIONS=201} [2020-10-09 18:30:23,292 INFO L341 CegarLoopForPetriNet]: 144 programPoint places, 13 predicate places. [2020-10-09 18:30:23,292 INFO L481 AbstractCegarLoop]: Abstraction has has 157 places, 201 transitions, 581 flow [2020-10-09 18:30:23,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 18:30:23,292 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:30:23,292 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] [2020-10-09 18:30:23,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 18:30:23,506 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:30:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:30:23,507 INFO L82 PathProgramCache]: Analyzing trace with hash -715758526, now seen corresponding path program 1 times [2020-10-09 18:30:23,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:30:23,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731844231] [2020-10-09 18:30:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 18:30:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:30:23,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:30:23,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:30:23,603 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-09 18:30:23,604 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:23,607 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:23,607 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:23,607 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-09 18:30:23,619 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-09 18:30:23,619 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:23,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:23,621 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:23,622 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:3 [2020-10-09 18:30:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:23,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:30:23,661 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 18:30:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:23,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731844231] [2020-10-09 18:30:23,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:30:23,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-09 18:30:23,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156806395] [2020-10-09 18:30:23,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 18:30:23,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:30:23,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 18:30:23,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-09 18:30:24,678 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 157 [2020-10-09 18:30:24,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 201 transitions, 581 flow. Second operand 6 states. [2020-10-09 18:30:24,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:30:24,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 157 [2020-10-09 18:30:24,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:30:25,086 INFO L129 PetriNetUnfolder]: 502/1526 cut-off events. [2020-10-09 18:30:25,087 INFO L130 PetriNetUnfolder]: For 384/384 co-relation queries the response was YES. [2020-10-09 18:30:25,091 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1526 events. 502/1526 cut-off events. For 384/384 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10982 event pairs, 98 based on Foata normal form. 26/1544 useless extension candidates. Maximal degree in co-relation 3081. Up to 596 conditions per place. [2020-10-09 18:30:25,100 INFO L132 encePairwiseOnDemand]: 148/157 looper letters, 73 selfloop transitions, 26 changer transitions 63/262 dead transitions. [2020-10-09 18:30:25,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 262 transitions, 1143 flow [2020-10-09 18:30:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 18:30:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 18:30:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1062 transitions. [2020-10-09 18:30:25,107 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7515923566878981 [2020-10-09 18:30:25,107 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1062 transitions. [2020-10-09 18:30:25,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1062 transitions. [2020-10-09 18:30:25,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:30:25,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1062 transitions. [2020-10-09 18:30:25,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 18:30:25,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 18:30:25,113 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 18:30:25,113 INFO L185 Difference]: Start difference. First operand has 157 places, 201 transitions, 581 flow. Second operand 9 states and 1062 transitions. [2020-10-09 18:30:25,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 262 transitions, 1143 flow [2020-10-09 18:30:25,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 262 transitions, 1143 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-09 18:30:25,138 INFO L241 Difference]: Finished difference. Result has 172 places, 195 transitions, 690 flow [2020-10-09 18:30:25,138 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=690, PETRI_PLACES=172, PETRI_TRANSITIONS=195} [2020-10-09 18:30:25,139 INFO L341 CegarLoopForPetriNet]: 144 programPoint places, 28 predicate places. [2020-10-09 18:30:25,139 INFO L481 AbstractCegarLoop]: Abstraction has has 172 places, 195 transitions, 690 flow [2020-10-09 18:30:25,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 18:30:25,140 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:30:25,140 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, 1] [2020-10-09 18:30:25,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 18:30:25,353 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:30:25,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:30:25,354 INFO L82 PathProgramCache]: Analyzing trace with hash -308741504, now seen corresponding path program 1 times [2020-10-09 18:30:25,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:30:25,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062906794] [2020-10-09 18:30:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 18:30:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:30:25,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:30:25,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:30:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:25,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:30:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:25,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062906794] [2020-10-09 18:30:25,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:30:25,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-09 18:30:25,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165554746] [2020-10-09 18:30:25,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-09 18:30:25,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:30:25,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-09 18:30:25,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-09 18:30:25,555 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 157 [2020-10-09 18:30:25,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 195 transitions, 690 flow. Second operand 5 states. [2020-10-09 18:30:25,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:30:25,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 157 [2020-10-09 18:30:25,556 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:30:25,646 INFO L129 PetriNetUnfolder]: 5/206 cut-off events. [2020-10-09 18:30:25,646 INFO L130 PetriNetUnfolder]: For 80/104 co-relation queries the response was YES. [2020-10-09 18:30:25,647 INFO L80 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 206 events. 5/206 cut-off events. For 80/104 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 511 event pairs, 4 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 276. Up to 13 conditions per place. [2020-10-09 18:30:25,648 INFO L132 encePairwiseOnDemand]: 152/157 looper letters, 4 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2020-10-09 18:30:25,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 120 transitions, 302 flow [2020-10-09 18:30:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-09 18:30:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-09 18:30:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 855 transitions. [2020-10-09 18:30:25,651 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9076433121019108 [2020-10-09 18:30:25,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 855 transitions. [2020-10-09 18:30:25,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 855 transitions. [2020-10-09 18:30:25,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:30:25,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 855 transitions. [2020-10-09 18:30:25,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-09 18:30:25,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-09 18:30:25,656 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-09 18:30:25,656 INFO L185 Difference]: Start difference. First operand has 172 places, 195 transitions, 690 flow. Second operand 6 states and 855 transitions. [2020-10-09 18:30:25,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 120 transitions, 302 flow [2020-10-09 18:30:25,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 120 transitions, 270 flow, removed 16 selfloop flow, removed 4 redundant places. [2020-10-09 18:30:25,660 INFO L241 Difference]: Finished difference. Result has 135 places, 120 transitions, 262 flow [2020-10-09 18:30:25,660 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2020-10-09 18:30:25,661 INFO L341 CegarLoopForPetriNet]: 144 programPoint places, -9 predicate places. [2020-10-09 18:30:25,661 INFO L481 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 262 flow [2020-10-09 18:30:25,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-09 18:30:25,661 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:30:25,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:30:25,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 18:30:25,882 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:30:25,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:30:25,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1972297223, now seen corresponding path program 1 times [2020-10-09 18:30:25,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:30:25,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037209004] [2020-10-09 18:30:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 18:30:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:30:25,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 18:30:25,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:30:26,007 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-09 18:30:26,007 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:26,009 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:26,009 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:26,010 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-09 18:30:26,034 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-10-09 18:30:26,034 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2020-10-09 18:30:26,035 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:26,040 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:26,041 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:26,041 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-10-09 18:30:26,057 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-10-09 18:30:26,058 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2020-10-09 18:30:26,059 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:26,060 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:26,061 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:26,061 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:3 [2020-10-09 18:30:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:26,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:30:26,105 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 18:30:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:26,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037209004] [2020-10-09 18:30:26,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:30:26,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 7 [2020-10-09 18:30:26,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249979997] [2020-10-09 18:30:26,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-09 18:30:26,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:30:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-09 18:30:26,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-09 18:30:27,037 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 157 [2020-10-09 18:30:27,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 262 flow. Second operand 7 states. [2020-10-09 18:30:27,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:30:27,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 157 [2020-10-09 18:30:27,039 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:30:27,380 INFO L129 PetriNetUnfolder]: 113/622 cut-off events. [2020-10-09 18:30:27,381 INFO L130 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2020-10-09 18:30:27,383 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 622 events. 113/622 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3528 event pairs, 34 based on Foata normal form. 10/628 useless extension candidates. Maximal degree in co-relation 1056. Up to 175 conditions per place. [2020-10-09 18:30:27,386 INFO L132 encePairwiseOnDemand]: 143/157 looper letters, 45 selfloop transitions, 42 changer transitions 0/175 dead transitions. [2020-10-09 18:30:27,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 175 transitions, 622 flow [2020-10-09 18:30:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-09 18:30:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-09 18:30:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1615 transitions. [2020-10-09 18:30:27,395 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7347588717015469 [2020-10-09 18:30:27,395 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1615 transitions. [2020-10-09 18:30:27,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1615 transitions. [2020-10-09 18:30:27,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:30:27,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1615 transitions. [2020-10-09 18:30:27,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 15 states. [2020-10-09 18:30:27,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 15 states. [2020-10-09 18:30:27,404 INFO L81 ComplementDD]: Finished complementDD. Result 15 states. [2020-10-09 18:30:27,404 INFO L185 Difference]: Start difference. First operand has 135 places, 120 transitions, 262 flow. Second operand 14 states and 1615 transitions. [2020-10-09 18:30:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 175 transitions, 622 flow [2020-10-09 18:30:27,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 175 transitions, 615 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-09 18:30:27,410 INFO L241 Difference]: Finished difference. Result has 148 places, 171 transitions, 591 flow [2020-10-09 18:30:27,411 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=591, PETRI_PLACES=148, PETRI_TRANSITIONS=171} [2020-10-09 18:30:27,411 INFO L341 CegarLoopForPetriNet]: 144 programPoint places, 4 predicate places. [2020-10-09 18:30:27,411 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 171 transitions, 591 flow [2020-10-09 18:30:27,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-09 18:30:27,412 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:30:27,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:30:27,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 18:30:27,631 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:30:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:30:27,631 INFO L82 PathProgramCache]: Analyzing trace with hash 198494300, now seen corresponding path program 1 times [2020-10-09 18:30:27,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:30:27,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998506689] [2020-10-09 18:30:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 18:30:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 18:30:27,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 18:30:27,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 18:30:27,766 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-09 18:30:27,766 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:27,768 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:27,768 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:27,769 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-09 18:30:27,777 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-09 18:30:27,778 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-09 18:30:27,779 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-09 18:30:27,779 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-09 18:30:27,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-10-09 18:30:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:27,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 18:30:27,827 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 18:30:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 18:30:27,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998506689] [2020-10-09 18:30:27,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 18:30:27,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-09 18:30:27,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117028] [2020-10-09 18:30:27,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-09 18:30:27,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 18:30:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-09 18:30:27,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-09 18:30:28,465 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 157 [2020-10-09 18:30:28,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 171 transitions, 591 flow. Second operand 6 states. [2020-10-09 18:30:28,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 18:30:28,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 157 [2020-10-09 18:30:28,466 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 18:30:28,747 INFO L129 PetriNetUnfolder]: 149/786 cut-off events. [2020-10-09 18:30:28,747 INFO L130 PetriNetUnfolder]: For 428/428 co-relation queries the response was YES. [2020-10-09 18:30:28,750 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 786 events. 149/786 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4962 event pairs, 34 based on Foata normal form. 14/796 useless extension candidates. Maximal degree in co-relation 1700. Up to 227 conditions per place. [2020-10-09 18:30:28,754 INFO L132 encePairwiseOnDemand]: 144/157 looper letters, 69 selfloop transitions, 65 changer transitions 0/226 dead transitions. [2020-10-09 18:30:28,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 226 transitions, 1149 flow [2020-10-09 18:30:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 18:30:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 18:30:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1398 transitions. [2020-10-09 18:30:28,759 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7420382165605095 [2020-10-09 18:30:28,759 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1398 transitions. [2020-10-09 18:30:28,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1398 transitions. [2020-10-09 18:30:28,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 18:30:28,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1398 transitions. [2020-10-09 18:30:28,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 18:30:28,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 18:30:28,767 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 18:30:28,767 INFO L185 Difference]: Start difference. First operand has 148 places, 171 transitions, 591 flow. Second operand 12 states and 1398 transitions. [2020-10-09 18:30:28,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 226 transitions, 1149 flow [2020-10-09 18:30:28,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 226 transitions, 993 flow, removed 78 selfloop flow, removed 1 redundant places. [2020-10-09 18:30:28,781 INFO L241 Difference]: Finished difference. Result has 165 places, 214 transitions, 913 flow [2020-10-09 18:30:28,781 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=913, PETRI_PLACES=165, PETRI_TRANSITIONS=214} [2020-10-09 18:30:28,781 INFO L341 CegarLoopForPetriNet]: 144 programPoint places, 21 predicate places. [2020-10-09 18:30:28,782 INFO L481 AbstractCegarLoop]: Abstraction has has 165 places, 214 transitions, 913 flow [2020-10-09 18:30:28,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-09 18:30:28,782 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 18:30:28,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 18:30:28,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 18:30:28,994 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 18:30:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 18:30:28,995 INFO L82 PathProgramCache]: Analyzing trace with hash 43404273, now seen corresponding path program 1 times [2020-10-09 18:30:28,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 18:30:28,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142819099] [2020-10-09 18:30:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 18:30:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 18:30:29,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 18:30:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 18:30:29,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 18:30:29,406 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-10-09 18:30:29,407 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 18:30:29,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 18:30:29,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 06:30:29 BasicIcfg [2020-10-09 18:30:29,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 18:30:29,727 INFO L168 Benchmark]: Toolchain (without parser) took 10860.53 ms. Allocated memory was 249.6 MB in the beginning and 515.4 MB in the end (delta: 265.8 MB). Free memory was 200.3 MB in the beginning and 184.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 281.7 MB. Max. memory is 14.2 GB. [2020-10-09 18:30:29,728 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 249.6 MB. Free memory was 225.1 MB in the beginning and 224.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-09 18:30:29,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1206.53 ms. Allocated memory was 249.6 MB in the beginning and 353.9 MB in the end (delta: 104.3 MB). Free memory was 200.3 MB in the beginning and 317.8 MB in the end (delta: -117.5 MB). Peak memory consumption was 107.4 MB. Max. memory is 14.2 GB. [2020-10-09 18:30:29,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.92 ms. Allocated memory is still 353.9 MB. Free memory was 317.8 MB in the beginning and 313.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.2 GB. [2020-10-09 18:30:29,730 INFO L168 Benchmark]: Boogie Preprocessor took 63.11 ms. Allocated memory is still 353.9 MB. Free memory was 313.3 MB in the beginning and 311.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.2 GB. [2020-10-09 18:30:29,731 INFO L168 Benchmark]: RCFGBuilder took 687.14 ms. Allocated memory is still 353.9 MB. Free memory was 311.0 MB in the beginning and 263.2 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 14.2 GB. [2020-10-09 18:30:29,732 INFO L168 Benchmark]: TraceAbstraction took 8832.24 ms. Allocated memory was 353.9 MB in the beginning and 515.4 MB in the end (delta: 161.5 MB). Free memory was 261.0 MB in the beginning and 184.4 MB in the end (delta: 76.6 MB). Peak memory consumption was 238.1 MB. Max. memory is 14.2 GB. [2020-10-09 18:30:29,736 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 249.6 MB. Free memory was 225.1 MB in the beginning and 224.3 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1206.53 ms. Allocated memory was 249.6 MB in the beginning and 353.9 MB in the end (delta: 104.3 MB). Free memory was 200.3 MB in the beginning and 317.8 MB in the end (delta: -117.5 MB). Peak memory consumption was 107.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 66.92 ms. Allocated memory is still 353.9 MB. Free memory was 317.8 MB in the beginning and 313.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 63.11 ms. Allocated memory is still 353.9 MB. Free memory was 313.3 MB in the beginning and 311.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.2 GB. * RCFGBuilder took 687.14 ms. Allocated memory is still 353.9 MB. Free memory was 311.0 MB in the beginning and 263.2 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 8832.24 ms. Allocated memory was 353.9 MB in the beginning and 515.4 MB in the end (delta: 161.5 MB). Free memory was 261.0 MB in the beginning and 184.4 MB in the end (delta: 76.6 MB). Peak memory consumption was 238.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1682]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1683] 0 pthread_t t1,t2; VAL [t1={68:0}, t2={70:0}] [L1731] 0 return 0; VAL [t1={68:0}, t2={70:0}] [L1737] 0 int ret = my_drv_init(); VAL [t1={68:0}, t2={70:0}] [L1738] COND TRUE 0 ret==0 VAL [t1={68:0}, t2={70:0}] [L1739] 0 int probe_ret; VAL [t1={68:0}, t2={70:0}] [L1740] 0 struct my_data data; VAL [t1={68:0}, t2={70:0}] [L1706] 0 struct device *d = &data->dev; VAL [t1={68:0}, t2={70:0}] [L1708] 0 data->shared.a = 0 VAL [t1={68:0}, t2={70:0}] [L1709] 0 data->shared.b = 0 VAL [t1={68:0}, t2={70:0}] [L1710] 0 int res = __VERIFIER_nondet_int(); VAL [t1={68:0}, t2={70:0}] [L1711] COND FALSE 0 !(\read(res)) VAL [t1={68:0}, t2={70:0}] [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={67:24}, t1={68:0}, t2={70:0}] [L1696] 1 struct device *dev = (struct device*)arg; VAL [arg={67:24}, arg={67:24}, dev={67:24}, t1={68:0}, t2={70:0}] [L1697] 1 struct my_data *data; VAL [arg={67:24}, arg={67:24}, dev={67:24}, t1={68:0}, t2={70:0}] [L1698] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, dev={67:24}, t1={68:0}, t2={70:0}] [L1698] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1700] 1 data->shared.a = 1 VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1701] EXPR 1 data->shared.b VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, data->shared.b=0, dev={67:24}, t1={68:0}, t2={70:0}] [L1701] 1 data->shared.b = data->shared.b + 1 VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, data->shared.b=0, dev={67:24}, t1={68:0}, t2={70:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, data->shared.b=0, dev={67:24}, t1={68:0}, t2={70:0}] [L1715] 0 return 0; VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, data->shared.b=0, dev={67:24}, t1={68:0}, t2={70:0}] [L1741] 0 probe_ret = my_drv_probe(&data) VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, data->shared.b=0, dev={67:24}, t1={68:0}, t2={70:0}] [L1742] COND TRUE 0 probe_ret==0 VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, data->shared.b=0, dev={67:24}, t1={68:0}, t2={70:0}] [L1721] 0 void *status; VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, data->shared.b=0, dev={67:24}, t1={68:0}, t2={70:0}] [L1722] 0 \read(t1) VAL [__mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, data->shared.b=0, dev={67:24}, t1={68:0}, t2={70:0}] [L1703] 1 return 0; VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1723] 0 data->shared.a = 3 VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1696] 2 struct device *dev = (struct device*)arg; VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1697] 2 struct my_data *data; VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1698] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1698] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1700] 2 data->shared.a = 1 VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1724] 0 data->shared.b = 3 VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1725] 0 data->shared.a VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1682] COND TRUE 0 !expression VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] [L1682] 0 __VERIFIER_error() VAL [\result={0:0}, __mptr={67:24}, arg={67:24}, arg={67:24}, data={67:0}, dev={67:24}, t1={68:0}, t2={70:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 132 locations, 6 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: UNSAFE, OverallTime: 8.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 24 SDtfs, 670 SDslu, 1107 SDs, 0 SdLazy, 1334 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 635 GetRequests, 570 SyntacticMatches, 13 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=913occurred 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 598 ConstructedInterpolants, 0 QuantifiedInterpolants, 63770 SizeOfPredicates, 26 NumberOfNonLiveVariables, 765 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 incorrect! Received shutdown request...