/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/atomic/13-loop-after.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:39:40,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:39:40,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:39:40,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:39:40,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:39:40,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:39:40,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:39:40,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:39:40,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:39:40,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:39:40,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:39:40,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:39:40,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:39:40,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:39:40,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:39:40,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:39:40,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:39:40,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:39:40,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:39:40,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:39:40,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:39:40,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:39:40,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:39:40,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:39:40,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:39:40,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:39:40,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:39:40,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:39:40,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:39:40,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:39:40,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:39:40,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:39:40,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:39:40,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:39:40,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:39:40,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:39:40,789 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 07:39:40,807 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:39:40,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:39:40,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:39:40,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:39:40,809 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:39:40,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:39:40,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:39:40,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:39:40,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:39:40,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:39:40,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:39:40,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:39:40,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:39:40,810 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:39:40,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:39:40,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:39:40,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:39:40,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:39:40,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:39:40,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:39:40,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:39:40,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:39:40,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:39:40,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:39:40,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:39:40,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:39:40,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:39:40,812 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:39:40,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:39:40,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:39:40,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:39:41,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:39:41,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:39:41,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:39:41,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 07:39:41,125 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 07:39:41,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/13-loop-after.c [2021-03-25 07:39:41,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de8fa6f64/f133e42d180d4070923a92c7f425a7d4/FLAG4119ab159 [2021-03-25 07:39:41,670 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 07:39:41,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/13-loop-after.c [2021-03-25 07:39:41,670 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:39:41,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de8fa6f64/f133e42d180d4070923a92c7f425a7d4/FLAG4119ab159 [2021-03-25 07:39:42,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de8fa6f64/f133e42d180d4070923a92c7f425a7d4 [2021-03-25 07:39:42,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:39:42,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 07:39:42,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:42,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 07:39:42,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 07:39:42,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520d9e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42, skipping insertion in model container [2021-03-25 07:39:42,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 07:39:42,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 07:39:42,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:42,360 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 07:39:42,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:42,381 INFO L208 MainTranslator]: Completed translation [2021-03-25 07:39:42,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42 WrapperNode [2021-03-25 07:39:42,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:42,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:42,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:39:42,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:39:42,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:42,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:39:42,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:39:42,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:39:42,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (1/1) ... [2021-03-25 07:39:42,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:39:42,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:39:42,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:39:42,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:39:42,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (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 07:39:42,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 07:39:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 07:39:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 07:39:42,494 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 07:39:42,494 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 07:39:42,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:39:42,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:39:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 07:39:42,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 07:39:42,497 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 07:39:42,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:39:42,701 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-03-25 07:39:42,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:42 BoogieIcfgContainer [2021-03-25 07:39:42,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:39:42,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:39:42,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:39:42,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:39:42,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 07:39:42" (1/3) ... [2021-03-25 07:39:42,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4fa4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:42, skipping insertion in model container [2021-03-25 07:39:42,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:42" (2/3) ... [2021-03-25 07:39:42,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4fa4f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:42, skipping insertion in model container [2021-03-25 07:39:42,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:42" (3/3) ... [2021-03-25 07:39:42,711 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-loop-after.c [2021-03-25 07:39:42,715 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:39:42,718 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:39:42,718 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:39:42,735 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,735 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,735 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,735 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,736 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,736 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,736 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,736 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,736 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,737 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,737 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,737 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,738 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,739 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,739 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,739 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:42,757 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:39:42,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 07:39:42,809 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:39:42,809 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:39:42,809 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:39:42,809 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:39:42,809 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:39:42,810 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:39:42,810 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:39:42,810 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:39:42,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 29 transitions, 63 flow [2021-03-25 07:39:42,850 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-25 07:39:42,850 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:42,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 2/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2021-03-25 07:39:42,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 29 transitions, 63 flow [2021-03-25 07:39:42,858 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 28 transitions, 59 flow [2021-03-25 07:39:42,859 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:42,867 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 28 transitions, 59 flow [2021-03-25 07:39:42,872 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 28 transitions, 59 flow [2021-03-25 07:39:42,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 59 flow [2021-03-25 07:39:42,890 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-25 07:39:42,890 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:42,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 2/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2021-03-25 07:39:42,893 INFO L142 LiptonReduction]: Number of co-enabled transitions 144 [2021-03-25 07:39:43,265 INFO L154 LiptonReduction]: Checked pairs total: 170 [2021-03-25 07:39:43,266 INFO L156 LiptonReduction]: Total number of compositions: 15 [2021-03-25 07:39:43,267 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 409 [2021-03-25 07:39:43,276 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-25 07:39:43,276 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:43,276 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:43,277 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:39:43,277 INFO L428 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1060870029, now seen corresponding path program 1 times [2021-03-25 07:39:43,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:43,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051147968] [2021-03-25 07:39:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:43,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:43,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:43,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:43,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:43,413 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 07:39:43,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051147968] [2021-03-25 07:39:43,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:43,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:39:43,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189777274] [2021-03-25 07:39:43,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:39:43,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:43,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:39:43,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:39:43,439 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 44 [2021-03-25 07:39:43,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 29 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 07:39:43,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:43,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 44 [2021-03-25 07:39:43,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:43,468 INFO L129 PetriNetUnfolder]: 4/20 cut-off events. [2021-03-25 07:39:43,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:43,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 20 events. 4/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 30 event pairs, 0 based on Foata normal form. 6/25 useless extension candidates. Maximal degree in co-relation 25. Up to 6 conditions per place. [2021-03-25 07:39:43,470 INFO L132 encePairwiseOnDemand]: 39/44 looper letters, 3 selfloop transitions, 2 changer transitions 2/13 dead transitions. [2021-03-25 07:39:43,470 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 13 transitions, 43 flow [2021-03-25 07:39:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:39:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:39:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2021-03-25 07:39:43,481 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7803030303030303 [2021-03-25 07:39:43,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 103 transitions. [2021-03-25 07:39:43,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 103 transitions. [2021-03-25 07:39:43,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:43,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 103 transitions. [2021-03-25 07:39:43,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 07:39:43,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 07:39:43,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 07:39:43,505 INFO L185 Difference]: Start difference. First operand has 16 places, 13 transitions, 29 flow. Second operand 3 states and 103 transitions. [2021-03-25 07:39:43,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 13 transitions, 43 flow [2021-03-25 07:39:43,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 42 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:39:43,511 INFO L241 Difference]: Finished difference. Result has 17 places, 11 transitions, 36 flow [2021-03-25 07:39:43,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2021-03-25 07:39:43,513 INFO L343 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2021-03-25 07:39:43,513 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:43,514 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 11 transitions, 36 flow [2021-03-25 07:39:43,515 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 11 transitions, 36 flow [2021-03-25 07:39:43,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 11 transitions, 36 flow [2021-03-25 07:39:43,521 INFO L129 PetriNetUnfolder]: 2/14 cut-off events. [2021-03-25 07:39:43,521 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 07:39:43,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 14 events. 2/14 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 16. Up to 4 conditions per place. [2021-03-25 07:39:43,522 INFO L142 LiptonReduction]: Number of co-enabled transitions 14 [2021-03-25 07:39:43,731 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-25 07:39:43,731 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:39:43,732 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 219 [2021-03-25 07:39:43,733 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 32 flow [2021-03-25 07:39:43,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 07:39:43,733 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:43,733 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:39:43,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:39:43,734 INFO L428 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1589282057, now seen corresponding path program 1 times [2021-03-25 07:39:43,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:43,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139980702] [2021-03-25 07:39:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:43,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:43,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:43,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:43,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:43,760 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 07:39:43,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139980702] [2021-03-25 07:39:43,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:43,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:39:43,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207097618] [2021-03-25 07:39:43,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:39:43,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:43,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:39:43,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:39:43,763 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 47 [2021-03-25 07:39:43,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 07:39:43,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:43,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 47 [2021-03-25 07:39:43,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:43,772 INFO L129 PetriNetUnfolder]: 4/15 cut-off events. [2021-03-25 07:39:43,772 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 07:39:43,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 15 events. 4/15 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 26. Up to 6 conditions per place. [2021-03-25 07:39:43,772 INFO L132 encePairwiseOnDemand]: 45/47 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-25 07:39:43,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 40 flow [2021-03-25 07:39:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:39:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:39:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2021-03-25 07:39:43,774 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2021-03-25 07:39:43,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2021-03-25 07:39:43,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2021-03-25 07:39:43,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:43,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2021-03-25 07:39:43,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:39:43,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 07:39:43,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 07:39:43,776 INFO L185 Difference]: Start difference. First operand has 15 places, 9 transitions, 32 flow. Second operand 3 states and 102 transitions. [2021-03-25 07:39:43,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 40 flow [2021-03-25 07:39:43,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 9 transitions, 34 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 07:39:43,777 INFO L241 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2021-03-25 07:39:43,777 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2021-03-25 07:39:43,778 INFO L343 CegarLoopForPetriNet]: 16 programPoint places, -3 predicate places. [2021-03-25 07:39:43,778 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:43,778 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 0 transitions, 0 flow [2021-03-25 07:39:43,778 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 0 transitions, 0 flow [2021-03-25 07:39:43,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:43,779 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:39:43,779 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:43,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 07:39:43,779 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:39:43,779 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:39:43,779 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:39:43,779 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 07:39:43,780 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:43,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 07:39:43,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:39:43,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:39:43 BasicIcfg [2021-03-25 07:39:43,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:39:43,785 INFO L168 Benchmark]: Toolchain (without parser) took 1615.31 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 234.2 MB in the beginning and 275.3 MB in the end (delta: -41.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:43,785 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:43,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.33 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 233.6 MB in the beginning and 350.0 MB in the end (delta: -116.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:43,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.93 ms. Allocated memory is still 367.0 MB. Free memory was 350.0 MB in the beginning and 348.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:43,789 INFO L168 Benchmark]: Boogie Preprocessor took 20.78 ms. Allocated memory is still 367.0 MB. Free memory was 348.6 MB in the beginning and 347.9 MB in the end (delta: 722.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:43,789 INFO L168 Benchmark]: RCFGBuilder took 272.48 ms. Allocated memory is still 367.0 MB. Free memory was 347.9 MB in the beginning and 335.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:43,790 INFO L168 Benchmark]: TraceAbstraction took 1077.69 ms. Allocated memory is still 367.0 MB. Free memory was 334.4 MB in the beginning and 275.3 MB in the end (delta: 59.1 MB). Peak memory consumption was 60.7 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:43,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 211.33 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 233.6 MB in the beginning and 350.0 MB in the end (delta: -116.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.93 ms. Allocated memory is still 367.0 MB. Free memory was 350.0 MB in the beginning and 348.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.78 ms. Allocated memory is still 367.0 MB. Free memory was 348.6 MB in the beginning and 347.9 MB in the end (delta: 722.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 272.48 ms. Allocated memory is still 367.0 MB. Free memory was 347.9 MB in the beginning and 335.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1077.69 ms. Allocated memory is still 367.0 MB. Free memory was 334.4 MB in the beginning and 275.3 MB in the end (delta: 59.1 MB). Peak memory consumption was 60.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 394.0ms, 30 PlacesBefore, 16 PlacesAfterwards, 28 TransitionsBefore, 13 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 3 FixpointIterations, 6 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 15 TotalNumberOfCompositions, 170 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 80, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 61, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 61, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 80, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 61, unknown conditional: 0, unknown unconditional: 61] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 216.7ms, 17 PlacesBefore, 15 PlacesAfterwards, 11 TransitionsBefore, 9 TransitionsAfterwards, 14 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 13 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, 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: 0, positive: 0, positive conditional: 0, positive unconditional: 0, 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: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - PositiveResult [Line: 20]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 975.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 96.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 463.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=1, InterpolantAutomatonStates: 6, 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: 5.0ms SsaConstructionTime, 21.0ms SatisfiabilityAnalysisTime, 70.8ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...