/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread/triangular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:46:30,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:46:30,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:46:30,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:46:30,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:46:30,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:46:30,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:46:30,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:46:30,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:46:30,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:46:30,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:46:30,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:46:30,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:46:30,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:46:30,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:46:30,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:46:30,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:46:30,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:46:30,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:46:30,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:46:30,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:46:30,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:46:30,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:46:30,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:46:30,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 14:46:30,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 14:46:30,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 14:46:30,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 14:46:30,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 14:46:30,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 14:46:30,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:46:30,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:46:30,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:46:30,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:46:30,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:46:30,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:46:30,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:46:30,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:46:30,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:46:30,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:46:30,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:46:30,415 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 14:46:30,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:46:30,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:46:30,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:46:30,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:46:30,442 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:46:30,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:46:30,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:46:30,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:46:30,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:46:30,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:46:30,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:46:30,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:46:30,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:46:30,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:46:30,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:46:30,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:46:30,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:46:30,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:46:30,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:46:30,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:46:30,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:46:30,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:46:30,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:46:30,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:46:30,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:46:30,447 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 14:46:30,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:46:30,447 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 14:46:30,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 14:46:30,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:46:30,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:46:30,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:46:30,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:46:30,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:46:30,816 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:46:30,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-2.i [2020-10-09 14:46:30,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1895237ec/362ad8ff33d04573bc63a37f7b1c41b2/FLAG3d6fc3d13 [2020-10-09 14:46:31,497 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:46:31,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-2.i [2020-10-09 14:46:31,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1895237ec/362ad8ff33d04573bc63a37f7b1c41b2/FLAG3d6fc3d13 [2020-10-09 14:46:31,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1895237ec/362ad8ff33d04573bc63a37f7b1c41b2 [2020-10-09 14:46:31,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:46:31,784 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:46:31,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:46:31,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:46:31,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:46:31,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:46:31" (1/1) ... [2020-10-09 14:46:31,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a5ce4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:31, skipping insertion in model container [2020-10-09 14:46:31,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:46:31" (1/1) ... [2020-10-09 14:46:31,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:46:31,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:46:32,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:46:32,464 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:46:32,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:46:32,631 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:46:32,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32 WrapperNode [2020-10-09 14:46:32,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:46:32,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:46:32,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:46:32,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:46:32,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:46:32,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:46:32,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:46:32,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:46:32,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (1/1) ... [2020-10-09 14:46:32,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:46:32,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:46:32,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:46:32,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:46:32,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (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 14:46:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-09 14:46:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-09 14:46:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-09 14:46:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-09 14:46:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:46:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 14:46:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:46:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:46:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 14:46:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:46:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:46:32,814 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 14:46:33,211 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:46:33,211 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 14:46:33,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:46:33 BoogieIcfgContainer [2020-10-09 14:46:33,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:46:33,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:46:33,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:46:33,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:46:33,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:46:31" (1/3) ... [2020-10-09 14:46:33,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4841370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:46:33, skipping insertion in model container [2020-10-09 14:46:33,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:32" (2/3) ... [2020-10-09 14:46:33,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4841370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:46:33, skipping insertion in model container [2020-10-09 14:46:33,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:46:33" (3/3) ... [2020-10-09 14:46:33,238 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2020-10-09 14:46:33,252 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:46:33,260 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 14:46:33,261 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:46:33,292 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,292 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,292 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,292 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,293 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,293 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,294 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,294 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,294 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,295 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,295 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,295 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,295 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,296 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,296 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,296 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,297 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,297 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,297 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,297 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,298 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,298 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,298 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,299 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,299 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,299 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,299 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,300 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,304 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,304 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,305 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,305 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,305 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,305 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,313 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,314 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,314 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,314 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,314 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,315 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:33,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 14:46:33,370 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:46:33,370 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 14:46:33,370 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:46:33,371 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:46:33,371 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:46:33,371 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:46:33,371 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:46:33,371 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:46:33,387 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow [2020-10-09 14:46:33,430 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-10-09 14:46:33,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:46:33,437 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-09 14:46:33,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 55 transitions, 120 flow [2020-10-09 14:46:33,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 53 transitions, 112 flow [2020-10-09 14:46:33,469 INFO L129 PetriNetUnfolder]: 4/43 cut-off events. [2020-10-09 14:46:33,469 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:46:33,470 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:33,471 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] [2020-10-09 14:46:33,472 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:33,480 INFO L82 PathProgramCache]: Analyzing trace with hash 305903693, now seen corresponding path program 1 times [2020-10-09 14:46:33,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:33,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863554768] [2020-10-09 14:46:33,496 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 14:46:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:33,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 14:46:33,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:33,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:33,753 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:33,794 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 14:46:33,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:33,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:33,862 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 14:46:33,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863554768] [2020-10-09 14:46:33,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:46:33,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-09 14:46:33,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686838434] [2020-10-09 14:46:33,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:46:33,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:33,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:46:33,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:46:34,026 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:34,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 112 flow. Second operand 9 states. [2020-10-09 14:46:34,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:34,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:34,031 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:34,450 INFO L129 PetriNetUnfolder]: 73/340 cut-off events. [2020-10-09 14:46:34,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:46:34,455 INFO L80 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 340 events. 73/340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1887 event pairs, 0 based on Foata normal form. 78/390 useless extension candidates. Maximal degree in co-relation 444. Up to 45 conditions per place. [2020-10-09 14:46:34,459 INFO L132 encePairwiseOnDemand]: 44/55 looper letters, 17 selfloop transitions, 16 changer transitions 18/92 dead transitions. [2020-10-09 14:46:34,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 292 flow [2020-10-09 14:46:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 14:46:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-09 14:46:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 775 transitions. [2020-10-09 14:46:34,484 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8806818181818182 [2020-10-09 14:46:34,485 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 775 transitions. [2020-10-09 14:46:34,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 775 transitions. [2020-10-09 14:46:34,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:34,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 775 transitions. [2020-10-09 14:46:34,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 17 states. [2020-10-09 14:46:34,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 17 states. [2020-10-09 14:46:34,511 INFO L81 ComplementDD]: Finished complementDD. Result 17 states. [2020-10-09 14:46:34,514 INFO L185 Difference]: Start difference. First operand has 55 places, 53 transitions, 112 flow. Second operand 16 states and 775 transitions. [2020-10-09 14:46:34,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 292 flow [2020-10-09 14:46:34,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 14:46:34,529 INFO L241 Difference]: Finished difference. Result has 82 places, 67 transitions, 250 flow [2020-10-09 14:46:34,532 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=250, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2020-10-09 14:46:34,534 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2020-10-09 14:46:34,534 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 250 flow [2020-10-09 14:46:34,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:46:34,534 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:34,535 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] [2020-10-09 14:46:34,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 14:46:34,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:34,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1723906183, now seen corresponding path program 1 times [2020-10-09 14:46:34,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:34,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362820449] [2020-10-09 14:46:34,752 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 14:46:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:34,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 14:46:34,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:34,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:34,878 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 14:46:34,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:34,897 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:34,951 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 14:46:34,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362820449] [2020-10-09 14:46:34,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:46:34,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-10-09 14:46:34,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043966400] [2020-10-09 14:46:34,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 14:46:34,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:34,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 14:46:34,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-09 14:46:35,223 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:35,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 250 flow. Second operand 11 states. [2020-10-09 14:46:35,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:35,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:35,225 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:35,755 INFO L129 PetriNetUnfolder]: 96/452 cut-off events. [2020-10-09 14:46:35,755 INFO L130 PetriNetUnfolder]: For 1731/1846 co-relation queries the response was YES. [2020-10-09 14:46:35,761 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 452 events. 96/452 cut-off events. For 1731/1846 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2535 event pairs, 1 based on Foata normal form. 25/434 useless extension candidates. Maximal degree in co-relation 1171. Up to 68 conditions per place. [2020-10-09 14:46:35,766 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 31 selfloop transitions, 42 changer transitions 43/150 dead transitions. [2020-10-09 14:46:35,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 150 transitions, 1174 flow [2020-10-09 14:46:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 14:46:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-09 14:46:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1062 transitions. [2020-10-09 14:46:35,771 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8395256916996048 [2020-10-09 14:46:35,772 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1062 transitions. [2020-10-09 14:46:35,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1062 transitions. [2020-10-09 14:46:35,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:35,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1062 transitions. [2020-10-09 14:46:35,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 24 states. [2020-10-09 14:46:35,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 24 states. [2020-10-09 14:46:35,780 INFO L81 ComplementDD]: Finished complementDD. Result 24 states. [2020-10-09 14:46:35,781 INFO L185 Difference]: Start difference. First operand has 82 places, 67 transitions, 250 flow. Second operand 23 states and 1062 transitions. [2020-10-09 14:46:35,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 150 transitions, 1174 flow [2020-10-09 14:46:35,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 150 transitions, 1098 flow, removed 37 selfloop flow, removed 5 redundant places. [2020-10-09 14:46:35,798 INFO L241 Difference]: Finished difference. Result has 113 places, 92 transitions, 713 flow [2020-10-09 14:46:35,799 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=713, PETRI_PLACES=113, PETRI_TRANSITIONS=92} [2020-10-09 14:46:35,800 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2020-10-09 14:46:35,800 INFO L481 AbstractCegarLoop]: Abstraction has has 113 places, 92 transitions, 713 flow [2020-10-09 14:46:35,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 14:46:35,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:35,801 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 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 14:46:36,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 14:46:36,019 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:36,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1269320736, now seen corresponding path program 1 times [2020-10-09 14:46:36,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:36,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975793750] [2020-10-09 14:46:36,022 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 14:46:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:36,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:46:36,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:36,155 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:36,175 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:36,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:36,229 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:36,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975793750] [2020-10-09 14:46:36,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [734679299] [2020-10-09 14:46:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:36,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:46:36,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:36,406 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:36,411 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:36,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:36,422 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:36,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291390756] [2020-10-09 14:46:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:36,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:46:36,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:36,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:36,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:36,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:36,519 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:36,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:46:36,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2020-10-09 14:46:36,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086881745] [2020-10-09 14:46:36,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 14:46:36,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:36,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 14:46:36,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-09 14:46:36,732 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:36,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 92 transitions, 713 flow. Second operand 13 states. [2020-10-09 14:46:36,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:36,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:36,734 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:37,438 INFO L129 PetriNetUnfolder]: 98/500 cut-off events. [2020-10-09 14:46:37,438 INFO L130 PetriNetUnfolder]: For 4940/5111 co-relation queries the response was YES. [2020-10-09 14:46:37,443 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 500 events. 98/500 cut-off events. For 4940/5111 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2760 event pairs, 2 based on Foata normal form. 42/490 useless extension candidates. Maximal degree in co-relation 1732. Up to 78 conditions per place. [2020-10-09 14:46:37,448 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 44 selfloop transitions, 56 changer transitions 25/159 dead transitions. [2020-10-09 14:46:37,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 159 transitions, 2058 flow [2020-10-09 14:46:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-09 14:46:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-09 14:46:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1192 transitions. [2020-10-09 14:46:37,453 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8335664335664336 [2020-10-09 14:46:37,453 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1192 transitions. [2020-10-09 14:46:37,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1192 transitions. [2020-10-09 14:46:37,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:37,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1192 transitions. [2020-10-09 14:46:37,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 27 states. [2020-10-09 14:46:37,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 27 states. [2020-10-09 14:46:37,461 INFO L81 ComplementDD]: Finished complementDD. Result 27 states. [2020-10-09 14:46:37,461 INFO L185 Difference]: Start difference. First operand has 113 places, 92 transitions, 713 flow. Second operand 26 states and 1192 transitions. [2020-10-09 14:46:37,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 159 transitions, 2058 flow [2020-10-09 14:46:37,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 159 transitions, 1606 flow, removed 211 selfloop flow, removed 11 redundant places. [2020-10-09 14:46:37,482 INFO L241 Difference]: Finished difference. Result has 127 places, 114 transitions, 1030 flow [2020-10-09 14:46:37,483 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1030, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2020-10-09 14:46:37,483 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2020-10-09 14:46:37,483 INFO L481 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 1030 flow [2020-10-09 14:46:37,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 14:46:37,484 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:37,484 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:38,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:38,099 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:38,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:38,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1653313534, now seen corresponding path program 1 times [2020-10-09 14:46:38,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:38,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810153926] [2020-10-09 14:46:38,101 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 14:46:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:38,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 14:46:38,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:38,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:38,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:38,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:38,283 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:38,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810153926] [2020-10-09 14:46:38,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1879774835] [2020-10-09 14:46:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:38,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 14:46:38,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:38,488 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:38,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:38,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:38,506 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:38,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103312224] [2020-10-09 14:46:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:38,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 14:46:38,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:38,591 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:38,596 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:38,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:38,604 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:38,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:46:38,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 15 [2020-10-09 14:46:38,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838196635] [2020-10-09 14:46:38,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 14:46:38,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:38,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 14:46:38,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 14:46:38,784 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:38,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 1030 flow. Second operand 15 states. [2020-10-09 14:46:38,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:38,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:38,785 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:39,722 INFO L129 PetriNetUnfolder]: 111/618 cut-off events. [2020-10-09 14:46:39,722 INFO L130 PetriNetUnfolder]: For 8357/8454 co-relation queries the response was YES. [2020-10-09 14:46:39,728 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 618 events. 111/618 cut-off events. For 8357/8454 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3476 event pairs, 0 based on Foata normal form. 50/607 useless extension candidates. Maximal degree in co-relation 2323. Up to 78 conditions per place. [2020-10-09 14:46:39,734 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 36 selfloop transitions, 86 changer transitions 26/182 dead transitions. [2020-10-09 14:46:39,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 182 transitions, 2905 flow [2020-10-09 14:46:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 14:46:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-09 14:46:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1421 transitions. [2020-10-09 14:46:39,740 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8334310850439882 [2020-10-09 14:46:39,740 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1421 transitions. [2020-10-09 14:46:39,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1421 transitions. [2020-10-09 14:46:39,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:39,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1421 transitions. [2020-10-09 14:46:39,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 32 states. [2020-10-09 14:46:39,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 32 states. [2020-10-09 14:46:39,749 INFO L81 ComplementDD]: Finished complementDD. Result 32 states. [2020-10-09 14:46:39,750 INFO L185 Difference]: Start difference. First operand has 127 places, 114 transitions, 1030 flow. Second operand 31 states and 1421 transitions. [2020-10-09 14:46:39,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 182 transitions, 2905 flow [2020-10-09 14:46:39,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 182 transitions, 2478 flow, removed 205 selfloop flow, removed 10 redundant places. [2020-10-09 14:46:39,780 INFO L241 Difference]: Finished difference. Result has 157 places, 142 transitions, 1593 flow [2020-10-09 14:46:39,780 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1593, PETRI_PLACES=157, PETRI_TRANSITIONS=142} [2020-10-09 14:46:39,781 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2020-10-09 14:46:39,781 INFO L481 AbstractCegarLoop]: Abstraction has has 157 places, 142 transitions, 1593 flow [2020-10-09 14:46:39,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 14:46:39,781 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:39,781 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 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 14:46:40,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:40,397 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:40,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1286568708, now seen corresponding path program 2 times [2020-10-09 14:46:40,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:40,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260877882] [2020-10-09 14:46:40,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-09 14:46:40,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:46:40,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:40,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:46:40,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:40,551 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:40,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:40,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260877882] [2020-10-09 14:46:40,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [91855104] [2020-10-09 14:46:40,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:40,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:46:40,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:40,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 14:46:40,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:40,868 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:40,885 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:40,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:40,895 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:40,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201771453] [2020-10-09 14:46:40,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:41,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:46:41,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:41,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:46:41,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:41,023 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:41,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:41,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:46:41,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 20 [2020-10-09 14:46:41,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42521202] [2020-10-09 14:46:41,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-09 14:46:41,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:41,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-09 14:46:41,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-10-09 14:46:41,151 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:41,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 142 transitions, 1593 flow. Second operand 20 states. [2020-10-09 14:46:41,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:41,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:41,156 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:42,263 INFO L129 PetriNetUnfolder]: 127/708 cut-off events. [2020-10-09 14:46:42,263 INFO L130 PetriNetUnfolder]: For 12664/12778 co-relation queries the response was YES. [2020-10-09 14:46:42,273 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 708 events. 127/708 cut-off events. For 12664/12778 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3954 event pairs, 0 based on Foata normal form. 45/683 useless extension candidates. Maximal degree in co-relation 2901. Up to 89 conditions per place. [2020-10-09 14:46:42,282 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 52 selfloop transitions, 110 changer transitions 17/213 dead transitions. [2020-10-09 14:46:42,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 213 transitions, 3765 flow [2020-10-09 14:46:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-09 14:46:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-09 14:46:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1601 transitions. [2020-10-09 14:46:42,288 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8316883116883117 [2020-10-09 14:46:42,288 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1601 transitions. [2020-10-09 14:46:42,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1601 transitions. [2020-10-09 14:46:42,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:42,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1601 transitions. [2020-10-09 14:46:42,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 36 states. [2020-10-09 14:46:42,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 36 states. [2020-10-09 14:46:42,299 INFO L81 ComplementDD]: Finished complementDD. Result 36 states. [2020-10-09 14:46:42,299 INFO L185 Difference]: Start difference. First operand has 157 places, 142 transitions, 1593 flow. Second operand 35 states and 1601 transitions. [2020-10-09 14:46:42,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 213 transitions, 3765 flow [2020-10-09 14:46:42,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 213 transitions, 2917 flow, removed 374 selfloop flow, removed 21 redundant places. [2020-10-09 14:46:42,357 INFO L241 Difference]: Finished difference. Result has 175 places, 170 transitions, 1863 flow [2020-10-09 14:46:42,358 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1863, PETRI_PLACES=175, PETRI_TRANSITIONS=170} [2020-10-09 14:46:42,358 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 120 predicate places. [2020-10-09 14:46:42,358 INFO L481 AbstractCegarLoop]: Abstraction has has 175 places, 170 transitions, 1863 flow [2020-10-09 14:46:42,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-09 14:46:42,359 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:42,359 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 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 14:46:42,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:42,974 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:42,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1095061395, now seen corresponding path program 3 times [2020-10-09 14:46:42,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:42,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168254832] [2020-10-09 14:46:42,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-09 14:46:43,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-09 14:46:43,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-10-09 14:46:43,049 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 14:46:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-09 14:46:43,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-09 14:46:43,212 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-10-09 14:46:43,213 INFO L519 BasicCegarLoop]: Counterexample might be feasible [2020-10-09 14:46:43,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-09 14:46:43,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:46:43 BasicIcfg [2020-10-09 14:46:43,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:46:43,540 INFO L168 Benchmark]: Toolchain (without parser) took 11755.93 ms. Allocated memory was 247.5 MB in the beginning and 475.5 MB in the end (delta: 228.1 MB). Free memory was 202.5 MB in the beginning and 240.2 MB in the end (delta: -37.7 MB). Peak memory consumption was 190.4 MB. Max. memory is 14.2 GB. [2020-10-09 14:46:43,541 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:46:43,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 847.74 ms. Allocated memory was 247.5 MB in the beginning and 303.6 MB in the end (delta: 56.1 MB). Free memory was 202.5 MB in the beginning and 258.9 MB in the end (delta: -56.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. [2020-10-09 14:46:43,543 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.76 ms. Allocated memory is still 303.6 MB. Free memory is still 258.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:46:43,544 INFO L168 Benchmark]: Boogie Preprocessor took 37.05 ms. Allocated memory is still 303.6 MB. Free memory was 258.9 MB in the beginning and 256.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:46:43,545 INFO L168 Benchmark]: RCFGBuilder took 491.63 ms. Allocated memory is still 303.6 MB. Free memory was 256.4 MB in the beginning and 234.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. [2020-10-09 14:46:43,545 INFO L168 Benchmark]: TraceAbstraction took 10315.64 ms. Allocated memory was 303.6 MB in the beginning and 475.5 MB in the end (delta: 172.0 MB). Free memory was 234.4 MB in the beginning and 240.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 166.2 MB. Max. memory is 14.2 GB. [2020-10-09 14:46:43,550 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 247.5 MB. Free memory is still 223.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 847.74 ms. Allocated memory was 247.5 MB in the beginning and 303.6 MB in the end (delta: 56.1 MB). Free memory was 202.5 MB in the beginning and 258.9 MB in the end (delta: -56.4 MB). Peak memory consumption was 33.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 54.76 ms. Allocated memory is still 303.6 MB. Free memory is still 258.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 37.05 ms. Allocated memory is still 303.6 MB. Free memory was 258.9 MB in the beginning and 256.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 491.63 ms. Allocated memory is still 303.6 MB. Free memory was 256.4 MB in the beginning and 234.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 14.2 GB. * TraceAbstraction took 10315.64 ms. Allocated memory was 303.6 MB in the beginning and 475.5 MB in the end (delta: 172.0 MB). Free memory was 234.4 MB in the beginning and 240.2 MB in the end (delta: -5.7 MB). Peak memory consumption was 166.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L675] 0 int i = 3, j = 6; VAL [i=3, j=6] [L693] 0 pthread_t id1, id2; VAL [i=3, j=6] [L694] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L695] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, i=3, j=6] [L685] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L685] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L677] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L677] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L697] 0 int condI = i >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=0] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L677] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=0, k=1] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=0, k=2] [L677] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=0, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1] [L685] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=1, k=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=1] [L677] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=1] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L685] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L685] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L677] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=3] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L685] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L700] 0 int condJ = j >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L702] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L703] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 10.0s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 280 SDslu, 125 SDs, 0 SdLazy, 803 SolverSat, 265 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 991 GetRequests, 821 SyntacticMatches, 13 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1863occurred 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, 1.4s InterpolantComputationTime, 527 NumberOfCodeBlocks, 527 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 892 ConstructedInterpolants, 0 QuantifiedInterpolants, 128456 SizeOfPredicates, 81 NumberOfNonLiveVariables, 1100 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 0/288 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...