/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:27:54,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:27:54,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:27:54,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:27:54,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:27:54,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:27:54,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:27:54,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:27:54,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:27:54,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:27:54,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:27:54,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:27:54,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:27:54,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:27:54,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:27:54,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:27:54,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:27:54,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:27:54,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:27:54,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:27:54,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:27:54,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:27:54,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:27:54,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:27:54,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 22:27:54,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 22:27:54,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 22:27:54,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 22:27:54,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 22:27:54,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 22:27:54,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 22:27:54,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 22:27:54,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 22:27:54,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 22:27:54,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 22:27:54,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 22:27:54,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 22:27:54,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 22:27:54,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:27:54,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:27:54,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:27:54,815 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-SemanticLbe.epf [2021-03-11 22:27:54,839 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:27:54,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:27:54,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:27:54,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:27:54,842 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:27:54,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:27:54,843 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:27:54,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:27:54,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:27:54,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:27:54,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:27:54,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:27:54,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:27:54,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:27:54,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:27:54,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:27:54,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:27:54,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:27:54,845 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:27:54,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:27:55,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:27:55,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:27:55,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:27:55,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 22:27:55,095 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 22:27:55,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-03-11 22:27:55,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/894f7e0f4/a26dd6b41a00456291e61a956be85d95/FLAG05722d1c1 [2021-03-11 22:27:55,501 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 22:27:55,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-03-11 22:27:55,501 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:27:55,501 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 22:27:55,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/894f7e0f4/a26dd6b41a00456291e61a956be85d95/FLAG05722d1c1 [2021-03-11 22:27:55,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/894f7e0f4/a26dd6b41a00456291e61a956be85d95 [2021-03-11 22:27:55,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:27:55,933 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 22:27:55,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 22:27:55,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 22:27:55,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 22:27:55,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:27:55" (1/1) ... [2021-03-11 22:27:55,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eade006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:55, skipping insertion in model container [2021-03-11 22:27:55,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 10:27:55" (1/1) ... [2021-03-11 22:27:55,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 22:27:55,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 22:27:56,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:27:56,053 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 22:27:56,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 22:27:56,073 INFO L208 MainTranslator]: Completed translation [2021-03-11 22:27:56,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56 WrapperNode [2021-03-11 22:27:56,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 22:27:56,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:27:56,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:27:56,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:27:56,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:27:56,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:27:56,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:27:56,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:27:56,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (1/1) ... [2021-03-11 22:27:56,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:27:56,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:27:56,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:27:56,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:27:56,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (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 [2021-03-11 22:27:56,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-03-11 22:27:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 22:27:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-11 22:27:56,167 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-11 22:27:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:27:56,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:27:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 22:27:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 22:27:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-11 22:27:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 22:27:56,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 22:27:56,168 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 22:27:56,404 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:27:56,404 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 22:27:56,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:27:56 BoogieIcfgContainer [2021-03-11 22:27:56,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:27:56,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:27:56,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:27:56,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:27:56,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 10:27:55" (1/3) ... [2021-03-11 22:27:56,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2992778f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:27:56, skipping insertion in model container [2021-03-11 22:27:56,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 10:27:56" (2/3) ... [2021-03-11 22:27:56,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2992778f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:27:56, skipping insertion in model container [2021-03-11 22:27:56,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:27:56" (3/3) ... [2021-03-11 22:27:56,409 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitSafe.c [2021-03-11 22:27:56,413 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:27:56,416 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 22:27:56,416 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,431 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,432 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,433 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,434 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,435 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,435 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,435 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,435 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,435 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,435 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,436 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,437 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,437 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,437 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,437 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,437 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,437 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,437 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:27:56,443 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-11 22:27:56,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-11 22:27:56,468 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:27:56,468 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:27:56,468 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:27:56,468 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:27:56,468 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:27:56,468 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:27:56,468 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:27:56,468 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:27:56,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 94 flow [2021-03-11 22:27:56,492 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-03-11 22:27:56,492 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 22:27:56,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 42 events. 0/42 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 22:27:56,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 94 flow [2021-03-11 22:27:56,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 70 flow [2021-03-11 22:27:56,498 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:27:56,504 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 32 transitions, 70 flow [2021-03-11 22:27:56,506 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 32 transitions, 70 flow [2021-03-11 22:27:56,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 70 flow [2021-03-11 22:27:56,513 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-11 22:27:56,513 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 22:27:56,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 32 events. 0/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 22:27:56,514 INFO L116 LiptonReduction]: Number of co-enabled transitions 54 [2021-03-11 22:27:57,729 INFO L131 LiptonReduction]: Checked pairs total: 52 [2021-03-11 22:27:57,729 INFO L133 LiptonReduction]: Total number of compositions: 26 [2021-03-11 22:27:57,730 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1234 [2021-03-11 22:27:57,736 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-11 22:27:57,736 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 22:27:57,736 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:27:57,737 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 22:27:57,737 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:27:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:27:57,740 INFO L82 PathProgramCache]: Analyzing trace with hash 148838218, now seen corresponding path program 1 times [2021-03-11 22:27:57,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:27:57,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467815378] [2021-03-11 22:27:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:27:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:27:57,880 INFO L142 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size [2021-03-11 22:27:57,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 22:27:57,894 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-03-11 22:27:57,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 22:27:57,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:57,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 22:27:57,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:57,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 22:27:57,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:57,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 22:27:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:27:57,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467815378] [2021-03-11 22:27:57,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:27:57,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 22:27:57,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867171315] [2021-03-11 22:27:57,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:27:57,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:27:57,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:27:57,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:27:57,955 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 69 [2021-03-11 22:27:57,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 6 transitions, 18 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2021-03-11 22:27:57,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:27:57,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 69 [2021-03-11 22:27:57,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:27:58,045 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-11 22:27:58,045 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 22:27:58,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 9 events. 0/9 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-11 22:27:58,046 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 3 selfloop transitions, 3 changer transitions 3/9 dead transitions. [2021-03-11 22:27:58,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 45 flow [2021-03-11 22:27:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:27:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:27:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2021-03-11 22:27:58,057 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.35403726708074534 [2021-03-11 22:27:58,057 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 171 transitions. [2021-03-11 22:27:58,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 171 transitions. [2021-03-11 22:27:58,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:27:58,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 171 transitions. [2021-03-11 22:27:58,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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) [2021-03-11 22:27:58,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 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) [2021-03-11 22:27:58,065 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 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) [2021-03-11 22:27:58,071 INFO L185 Difference]: Start difference. First operand has 10 places, 6 transitions, 18 flow. Second operand 7 states and 171 transitions. [2021-03-11 22:27:58,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 45 flow [2021-03-11 22:27:58,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 9 transitions, 39 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:27:58,078 INFO L241 Difference]: Finished difference. Result has 17 places, 6 transitions, 28 flow [2021-03-11 22:27:58,079 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=6} [2021-03-11 22:27:58,079 INFO L335 CegarLoopForPetriNet]: 10 programPoint places, 7 predicate places. [2021-03-11 22:27:58,079 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 6 transitions, 28 flow [2021-03-11 22:27:58,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2021-03-11 22:27:58,080 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:27:58,080 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-11 22:27:58,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:27:58,080 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 22:27:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:27:58,080 INFO L82 PathProgramCache]: Analyzing trace with hash 149068858, now seen corresponding path program 2 times [2021-03-11 22:27:58,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:27:58,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618218825] [2021-03-11 22:27:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:27:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:27:58,113 INFO L142 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size [2021-03-11 22:27:58,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 22:27:58,120 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-03-11 22:27:58,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 22:27:58,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:58,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 22:27:58,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:58,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 22:27:58,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:27:58,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-11 22:27:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:27:58,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618218825] [2021-03-11 22:27:58,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:27:58,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 22:27:58,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084232833] [2021-03-11 22:27:58,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 22:27:58,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:27:58,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 22:27:58,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 22:27:58,153 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 69 [2021-03-11 22:27:58,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 6 transitions, 28 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2021-03-11 22:27:58,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:27:58,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 69 [2021-03-11 22:27:58,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:27:58,200 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-11 22:27:58,200 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 22:27:58,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 5 events. 0/5 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-11 22:27:58,200 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-03-11 22:27:58,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 5 transitions, 34 flow [2021-03-11 22:27:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 22:27:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 22:27:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2021-03-11 22:27:58,202 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.34575569358178054 [2021-03-11 22:27:58,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 167 transitions. [2021-03-11 22:27:58,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 167 transitions. [2021-03-11 22:27:58,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:27:58,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 167 transitions. [2021-03-11 22:27:58,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2021-03-11 22:27:58,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 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) [2021-03-11 22:27:58,204 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 69.0) internal successors, (552), 8 states have internal predecessors, (552), 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) [2021-03-11 22:27:58,204 INFO L185 Difference]: Start difference. First operand has 17 places, 6 transitions, 28 flow. Second operand 7 states and 167 transitions. [2021-03-11 22:27:58,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 5 transitions, 34 flow [2021-03-11 22:27:58,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 5 transitions, 24 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-11 22:27:58,204 INFO L241 Difference]: Finished difference. Result has 14 places, 0 transitions, 0 flow [2021-03-11 22:27:58,204 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=14, PETRI_TRANSITIONS=0} [2021-03-11 22:27:58,205 INFO L335 CegarLoopForPetriNet]: 10 programPoint places, 4 predicate places. [2021-03-11 22:27:58,205 INFO L480 AbstractCegarLoop]: Abstraction has has 14 places, 0 transitions, 0 flow [2021-03-11 22:27:58,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 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) [2021-03-11 22:27:58,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:27:58,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:27:58 BasicIcfg [2021-03-11 22:27:58,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:27:58,208 INFO L168 Benchmark]: Toolchain (without parser) took 2278.33 ms. Allocated memory is still 354.4 MB. Free memory was 317.3 MB in the beginning and 231.3 MB in the end (delta: 85.9 MB). Peak memory consumption was 91.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:58,209 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 354.4 MB. Free memory was 335.8 MB in the beginning and 335.7 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:27:58,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.57 ms. Allocated memory is still 354.4 MB. Free memory was 316.6 MB in the beginning and 338.3 MB in the end (delta: -21.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:58,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.98 ms. Allocated memory is still 354.4 MB. Free memory was 338.3 MB in the beginning and 337.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:58,210 INFO L168 Benchmark]: Boogie Preprocessor took 10.74 ms. Allocated memory is still 354.4 MB. Free memory was 337.3 MB in the beginning and 335.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:27:58,210 INFO L168 Benchmark]: RCFGBuilder took 286.64 ms. Allocated memory is still 354.4 MB. Free memory was 335.9 MB in the beginning and 317.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:58,210 INFO L168 Benchmark]: TraceAbstraction took 1802.01 ms. Allocated memory is still 354.4 MB. Free memory was 316.3 MB in the beginning and 231.3 MB in the end (delta: 85.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:27:58,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 354.4 MB. Free memory was 335.8 MB in the beginning and 335.7 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 139.57 ms. Allocated memory is still 354.4 MB. Free memory was 316.6 MB in the beginning and 338.3 MB in the end (delta: -21.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.98 ms. Allocated memory is still 354.4 MB. Free memory was 338.3 MB in the beginning and 337.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.74 ms. Allocated memory is still 354.4 MB. Free memory was 337.3 MB in the beginning and 335.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 286.64 ms. Allocated memory is still 354.4 MB. Free memory was 335.9 MB in the beginning and 317.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1802.01 ms. Allocated memory is still 354.4 MB. Free memory was 316.3 MB in the beginning and 231.3 MB in the end (delta: 85.0 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1223.3ms, 36 PlacesBefore, 10 PlacesAfterwards, 32 TransitionsBefore, 6 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 4 FixpointIterations, 16 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 26 TotalNumberOfCompositions, 52 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 47, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 42, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 42, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 58, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 47, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 42, unknown conditional: 0, unknown unconditional: 42] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1740.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 181.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1265.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 56 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, InterpolantAutomatonStates: 14, 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: 4.5ms SsaConstructionTime, 38.1ms SatisfiabilityAnalysisTime, 178.9ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...