/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:38:11,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:38:11,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:38:11,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:38:11,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:38:11,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:38:11,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:38:11,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:38:11,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:38:11,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:38:11,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:38:11,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:38:11,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:38:11,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:38:11,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:38:11,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:38:11,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:38:11,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:38:11,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:38:11,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:38:11,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:38:11,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:38:11,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:38:11,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:38:11,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:38:11,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:38:11,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:38:11,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:38:11,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:38:11,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:38:11,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:38:11,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:38:11,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:38:11,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:38:11,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:38:11,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:38:11,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 07:38:11,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:38:11,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:38:11,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:38:11,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:38:11,381 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:38:11,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:38:11,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:38:11,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:38:11,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:38:11,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:38:11,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:38:11,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:38:11,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:38:11,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:38:11,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:38:11,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:38:11,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:38:11,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:38:11,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:38:11,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:38:11,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:38:11,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:38:11,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:38:11,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:38:11,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:38:11,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:38:11,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:38:11,386 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:38:11,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:38:11,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:38:11,386 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:38:11,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:38:11,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:38:11,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:38:11,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 07:38:11,697 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 07:38:11,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-03-25 07:38:11,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cd3e765e/33736d0c288e404babbb4c2296302cab/FLAG7d65d12ea [2021-03-25 07:38:12,163 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 07:38:12,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-03-25 07:38:12,164 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:38:12,164 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:38:12,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cd3e765e/33736d0c288e404babbb4c2296302cab/FLAG7d65d12ea [2021-03-25 07:38:12,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cd3e765e/33736d0c288e404babbb4c2296302cab [2021-03-25 07:38:12,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:38:12,207 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 07:38:12,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 07:38:12,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 07:38:12,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 07:38:12,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d24136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12, skipping insertion in model container [2021-03-25 07:38:12,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 07:38:12,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 07:38:12,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:38:12,418 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 07:38:12,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:38:12,440 INFO L208 MainTranslator]: Completed translation [2021-03-25 07:38:12,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12 WrapperNode [2021-03-25 07:38:12,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 07:38:12,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:38:12,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:38:12,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:38:12,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:38:12,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:38:12,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:38:12,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:38:12,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (1/1) ... [2021-03-25 07:38:12,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:38:12,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:38:12,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:38:12,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:38:12,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (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 [2021-03-25 07:38:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 07:38:12,568 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-25 07:38:12,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-25 07:38:12,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:38:12,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:38:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 07:38:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 07:38:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 07:38:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-03-25 07:38:12,570 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-03-25 07:38:12,571 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:38:12,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:38:12,777 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 07:38:12,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:38:12 BoogieIcfgContainer [2021-03-25 07:38:12,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:38:12,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:38:12,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:38:12,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:38:12,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 07:38:12" (1/3) ... [2021-03-25 07:38:12,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787b3582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:38:12, skipping insertion in model container [2021-03-25 07:38:12,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:38:12" (2/3) ... [2021-03-25 07:38:12,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787b3582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:38:12, skipping insertion in model container [2021-03-25 07:38:12,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:38:12" (3/3) ... [2021-03-25 07:38:12,784 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest1.c [2021-03-25 07:38:12,789 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:38:12,792 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:38:12,793 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:38:12,825 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,825 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,826 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,826 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,826 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,826 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,826 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,826 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,826 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,827 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,827 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,827 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,827 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,827 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,827 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,828 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,828 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,828 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,828 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,828 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,829 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,829 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,829 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,829 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,829 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,829 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,829 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,830 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,830 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,830 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,830 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,830 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,830 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,830 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,831 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,831 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,832 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,833 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,833 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,833 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,833 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,848 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,848 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,848 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,848 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,848 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:38:12,864 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 07:38:12,881 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 07:38:12,919 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:38:12,919 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:38:12,919 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:38:12,919 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:38:12,920 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:38:12,920 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:38:12,920 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:38:12,920 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:38:12,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 100 flow [2021-03-25 07:38:12,973 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-03-25 07:38:12,973 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:38:12,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 0/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 07:38:12,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 42 transitions, 100 flow [2021-03-25 07:38:12,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 76 flow [2021-03-25 07:38:12,984 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:12,991 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-25 07:38:12,996 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-25 07:38:12,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 76 flow [2021-03-25 07:38:13,024 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-03-25 07:38:13,024 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:38:13,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 0/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 07:38:13,026 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-25 07:38:13,702 INFO L154 LiptonReduction]: Checked pairs total: 244 [2021-03-25 07:38:13,703 INFO L156 LiptonReduction]: Total number of compositions: 17 [2021-03-25 07:38:13,705 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 722 [2021-03-25 07:38:13,724 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 07:38:13,724 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 07:38:13,724 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:38:13,725 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:38:13,725 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:38:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:38:13,731 INFO L82 PathProgramCache]: Analyzing trace with hash -71435164, now seen corresponding path program 1 times [2021-03-25 07:38:13,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:38:13,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734590847] [2021-03-25 07:38:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:38:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:38:13,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:13,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:38:13,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:13,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:38:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:38:13,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734590847] [2021-03-25 07:38:13,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:38:13,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:38:13,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093969997] [2021-03-25 07:38:13,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:38:13,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:38:13,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:38:13,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:38:13,940 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 59 [2021-03-25 07:38:13,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:13,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:38:13,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 59 [2021-03-25 07:38:13,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:38:13,993 INFO L129 PetriNetUnfolder]: 6/38 cut-off events. [2021-03-25 07:38:13,995 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 07:38:13,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 38 events. 6/38 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 4 based on Foata normal form. 6/42 useless extension candidates. Maximal degree in co-relation 50. Up to 19 conditions per place. [2021-03-25 07:38:13,998 INFO L132 encePairwiseOnDemand]: 55/59 looper letters, 9 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-25 07:38:13,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 74 flow [2021-03-25 07:38:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:38:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:38:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2021-03-25 07:38:14,018 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7344632768361582 [2021-03-25 07:38:14,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2021-03-25 07:38:14,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2021-03-25 07:38:14,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:38:14,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2021-03-25 07:38:14,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,035 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 42 flow. Second operand 3 states and 130 transitions. [2021-03-25 07:38:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 74 flow [2021-03-25 07:38:14,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 07:38:14,040 INFO L241 Difference]: Finished difference. Result has 20 places, 17 transitions, 53 flow [2021-03-25 07:38:14,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2021-03-25 07:38:14,042 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2021-03-25 07:38:14,042 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:14,042 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 17 transitions, 53 flow [2021-03-25 07:38:14,043 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 17 transitions, 53 flow [2021-03-25 07:38:14,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 17 transitions, 53 flow [2021-03-25 07:38:14,050 INFO L129 PetriNetUnfolder]: 1/26 cut-off events. [2021-03-25 07:38:14,050 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 07:38:14,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 26 events. 1/26 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 1 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 23. Up to 9 conditions per place. [2021-03-25 07:38:14,051 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-25 07:38:14,296 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-25 07:38:14,296 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 07:38:14,297 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 255 [2021-03-25 07:38:14,298 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 51 flow [2021-03-25 07:38:14,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,298 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:38:14,298 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:38:14,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:38:14,298 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:38:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:38:14,299 INFO L82 PathProgramCache]: Analyzing trace with hash 684196891, now seen corresponding path program 1 times [2021-03-25 07:38:14,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:38:14,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216391361] [2021-03-25 07:38:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:38:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:38:14,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:38:14,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:38:14,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:38:14,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:38:14,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:38:14,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:38:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:38:14,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216391361] [2021-03-25 07:38:14,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:38:14,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 07:38:14,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725618320] [2021-03-25 07:38:14,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 07:38:14,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:38:14,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 07:38:14,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 07:38:14,377 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 61 [2021-03-25 07:38:14,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 51 flow. Second operand has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:38:14,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 61 [2021-03-25 07:38:14,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:38:14,479 INFO L129 PetriNetUnfolder]: 10/50 cut-off events. [2021-03-25 07:38:14,480 INFO L130 PetriNetUnfolder]: For 26/29 co-relation queries the response was YES. [2021-03-25 07:38:14,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 50 events. 10/50 cut-off events. For 26/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 5 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 72. Up to 30 conditions per place. [2021-03-25 07:38:14,481 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 10 selfloop transitions, 6 changer transitions 5/26 dead transitions. [2021-03-25 07:38:14,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 26 transitions, 135 flow [2021-03-25 07:38:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 07:38:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 07:38:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2021-03-25 07:38:14,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6042154566744731 [2021-03-25 07:38:14,483 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 258 transitions. [2021-03-25 07:38:14,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 258 transitions. [2021-03-25 07:38:14,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:38:14,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 258 transitions. [2021-03-25 07:38:14,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,487 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,487 INFO L185 Difference]: Start difference. First operand has 19 places, 16 transitions, 51 flow. Second operand 7 states and 258 transitions. [2021-03-25 07:38:14,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 26 transitions, 135 flow [2021-03-25 07:38:14,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:38:14,488 INFO L241 Difference]: Finished difference. Result has 28 places, 20 transitions, 92 flow [2021-03-25 07:38:14,489 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2021-03-25 07:38:14,489 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2021-03-25 07:38:14,489 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:14,489 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 20 transitions, 92 flow [2021-03-25 07:38:14,490 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 20 transitions, 92 flow [2021-03-25 07:38:14,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 92 flow [2021-03-25 07:38:14,495 INFO L129 PetriNetUnfolder]: 4/35 cut-off events. [2021-03-25 07:38:14,495 INFO L130 PetriNetUnfolder]: For 16/17 co-relation queries the response was YES. [2021-03-25 07:38:14,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 35 events. 4/35 cut-off events. For 16/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 2 based on Foata normal form. 1/35 useless extension candidates. Maximal degree in co-relation 77. Up to 13 conditions per place. [2021-03-25 07:38:14,496 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 07:38:14,613 INFO L154 LiptonReduction]: Checked pairs total: 15 [2021-03-25 07:38:14,613 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:38:14,613 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 124 [2021-03-25 07:38:14,614 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 86 flow [2021-03-25 07:38:14,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,615 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:38:14,615 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:38:14,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:38:14,615 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:38:14,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:38:14,615 INFO L82 PathProgramCache]: Analyzing trace with hash -769473595, now seen corresponding path program 1 times [2021-03-25 07:38:14,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:38:14,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999585004] [2021-03-25 07:38:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:38:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:38:14,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:38:14,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:38:14,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 07:38:14,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 07:38:14,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 07:38:14,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:38:14,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 07:38:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:38:14,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999585004] [2021-03-25 07:38:14,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:38:14,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 07:38:14,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480277201] [2021-03-25 07:38:14,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 07:38:14,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:38:14,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 07:38:14,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-25 07:38:14,712 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 64 [2021-03-25 07:38:14,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 86 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:38:14,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 64 [2021-03-25 07:38:14,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:38:14,820 INFO L129 PetriNetUnfolder]: 9/51 cut-off events. [2021-03-25 07:38:14,820 INFO L130 PetriNetUnfolder]: For 53/58 co-relation queries the response was YES. [2021-03-25 07:38:14,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 51 events. 9/51 cut-off events. For 53/58 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 169 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 155. Up to 30 conditions per place. [2021-03-25 07:38:14,822 INFO L132 encePairwiseOnDemand]: 54/64 looper letters, 12 selfloop transitions, 7 changer transitions 6/30 dead transitions. [2021-03-25 07:38:14,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 194 flow [2021-03-25 07:38:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 07:38:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 07:38:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 296 transitions. [2021-03-25 07:38:14,827 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.578125 [2021-03-25 07:38:14,827 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 296 transitions. [2021-03-25 07:38:14,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 296 transitions. [2021-03-25 07:38:14,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:38:14,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 296 transitions. [2021-03-25 07:38:14,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 64.0) internal successors, (576), 9 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 64.0) internal successors, (576), 9 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,834 INFO L185 Difference]: Start difference. First operand has 24 places, 19 transitions, 86 flow. Second operand 8 states and 296 transitions. [2021-03-25 07:38:14,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 194 flow [2021-03-25 07:38:14,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 184 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-25 07:38:14,840 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 120 flow [2021-03-25 07:38:14,841 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=120, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2021-03-25 07:38:14,841 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 12 predicate places. [2021-03-25 07:38:14,841 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:38:14,841 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 21 transitions, 120 flow [2021-03-25 07:38:14,842 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 21 transitions, 120 flow [2021-03-25 07:38:14,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 21 transitions, 120 flow [2021-03-25 07:38:14,846 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2021-03-25 07:38:14,847 INFO L130 PetriNetUnfolder]: For 26/29 co-relation queries the response was YES. [2021-03-25 07:38:14,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 29 events. 2/29 cut-off events. For 26/29 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 71 event pairs, 0 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 77. Up to 11 conditions per place. [2021-03-25 07:38:14,847 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-25 07:38:14,931 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-25 07:38:14,931 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 07:38:14,931 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 90 [2021-03-25 07:38:14,932 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 122 flow [2021-03-25 07:38:14,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:38:14,933 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:38:14,933 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:38:14,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 07:38:14,933 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:38:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:38:14,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1932553935, now seen corresponding path program 1 times [2021-03-25 07:38:14,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:38:14,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205786799] [2021-03-25 07:38:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:38:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:38:14,945 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:38:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 07:38:14,954 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 07:38:14,969 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 07:38:14,970 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 07:38:14,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 07:38:14,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:38:14 BasicIcfg [2021-03-25 07:38:14,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:38:14,993 INFO L168 Benchmark]: Toolchain (without parser) took 2786.13 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 234.8 MB in the beginning and 205.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 114.0 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:14,995 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 160.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:38:14,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.48 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 234.8 MB in the beginning and 322.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:14,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.58 ms. Allocated memory is still 339.7 MB. Free memory was 322.6 MB in the beginning and 321.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:38:14,996 INFO L168 Benchmark]: Boogie Preprocessor took 24.44 ms. Allocated memory is still 339.7 MB. Free memory was 321.3 MB in the beginning and 320.6 MB in the end (delta: 720.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:14,996 INFO L168 Benchmark]: RCFGBuilder took 279.73 ms. Allocated memory is still 339.7 MB. Free memory was 320.6 MB in the beginning and 306.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:14,997 INFO L168 Benchmark]: TraceAbstraction took 2212.83 ms. Allocated memory is still 339.7 MB. Free memory was 306.0 MB in the beginning and 205.4 MB in the end (delta: 100.5 MB). Peak memory consumption was 103.3 MB. Max. memory is 16.0 GB. [2021-03-25 07:38:14,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 160.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 233.48 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 234.8 MB in the beginning and 322.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.58 ms. Allocated memory is still 339.7 MB. Free memory was 322.6 MB in the beginning and 321.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.44 ms. Allocated memory is still 339.7 MB. Free memory was 321.3 MB in the beginning and 320.6 MB in the end (delta: 720.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 279.73 ms. Allocated memory is still 339.7 MB. Free memory was 320.6 MB in the beginning and 306.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2212.83 ms. Allocated memory is still 339.7 MB. Free memory was 306.0 MB in the beginning and 205.4 MB in the end (delta: 100.5 MB). Peak memory consumption was 103.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 706.7ms, 38 PlacesBefore, 21 PlacesAfterwards, 32 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 17 TotalNumberOfCompositions, 244 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, positive: 137, positive conditional: 0, positive unconditional: 137, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 112, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 112, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 154, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 112, unknown conditional: 0, unknown unconditional: 112] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 253.5ms, 20 PlacesBefore, 19 PlacesAfterwards, 17 TransitionsBefore, 16 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 39 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 29, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 123.7ms, 28 PlacesBefore, 24 PlacesAfterwards, 20 TransitionsBefore, 19 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 15 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 89.5ms, 33 PlacesBefore, 29 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 7 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int x = 0; [L27] 0 pthread_t first_th_id; [L28] 0 pthread_t second_th_id; [L30] FCALL, FORK 0 pthread_create(&first_th_id, NULL, inc, NULL) VAL [n={0:0}, x=0] [L31] FCALL, FORK 0 pthread_create(&second_th_id, NULL, dec, NULL) VAL [n={0:0}, n={0:0}, x=0] [L22] 2 x-- VAL [n={0:0}, n={0:0}, n={0:0}, x=0, x--=0] [L17] 1 x++ [L18] 1 return NULL; [L33] 0 \read(first_th_id) VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1, x--=0] [L33] FCALL, JOIN 1 pthread_join(first_th_id, NULL) VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1, x--=0] [L34] 0 int y = x; VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1, x--=0] [L22] 2 x-- [L23] 2 return NULL; [L36] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, \result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2055.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 355.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 790.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 10 SDslu, 22 SDs, 0 SdLazy, 169 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 100.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.5ms SsaConstructionTime, 52.9ms SatisfiabilityAnalysisTime, 220.1ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 113 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...