/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/pthreadReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 23:45:42,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 23:45:42,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 23:45:42,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 23:45:42,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 23:45:42,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 23:45:42,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 23:45:42,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 23:45:42,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 23:45:42,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 23:45:42,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 23:45:42,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 23:45:42,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 23:45:42,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 23:45:42,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 23:45:42,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 23:45:42,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 23:45:42,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 23:45:42,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 23:45:42,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 23:45:42,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 23:45:42,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 23:45:42,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 23:45:42,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 23:45:42,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 23:45:42,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 23:45:42,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 23:45:42,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 23:45:42,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 23:45:42,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 23:45:42,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 23:45:42,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 23:45:42,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 23:45:42,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 23:45:42,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 23:45:42,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 23:45:42,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 23:45:42,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 23:45:42,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 23:45:42,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 23:45:42,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 23:45:42,965 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 [2021-06-10 23:45:42,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 23:45:42,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 23:45:43,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 23:45:43,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 23:45:43,002 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 23:45:43,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 23:45:43,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 23:45:43,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 23:45:43,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 23:45:43,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 23:45:43,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 23:45:43,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 23:45:43,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 23:45:43,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 23:45:43,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 23:45:43,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 23:45:43,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 23:45:43,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 23:45:43,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 23:45:43,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 23:45:43,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 23:45:43,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:45:43,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 23:45:43,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 23:45:43,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 23:45:43,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 23:45:43,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 23:45:43,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 23:45:43,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 23:45:43,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 23:45:43,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 23:45:43,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 23:45:43,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 23:45:43,338 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 23:45:43,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-06-10 23:45:43,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdcfe493/9bb14f73c74b4f3f87c0da66b9aa5901/FLAGeadda97ac [2021-06-10 23:45:43,778 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 23:45:43,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-06-10 23:45:43,779 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-10 23:45:43,779 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-10 23:45:43,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdcfe493/9bb14f73c74b4f3f87c0da66b9aa5901/FLAGeadda97ac [2021-06-10 23:45:43,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bdcfe493/9bb14f73c74b4f3f87c0da66b9aa5901 [2021-06-10 23:45:43,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 23:45:43,826 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 23:45:43,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 23:45:43,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 23:45:43,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 23:45:43,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:45:43" (1/1) ... [2021-06-10 23:45:43,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d3af75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:43, skipping insertion in model container [2021-06-10 23:45:43,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:45:43" (1/1) ... [2021-06-10 23:45:43,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 23:45:43,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 23:45:43,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 23:45:43,994 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 23:45:44,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 23:45:44,016 INFO L208 MainTranslator]: Completed translation [2021-06-10 23:45:44,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44 WrapperNode [2021-06-10 23:45:44,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 23:45:44,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 23:45:44,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 23:45:44,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 23:45:44,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 23:45:44,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 23:45:44,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 23:45:44,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 23:45:44,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (1/1) ... [2021-06-10 23:45:44,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 23:45:44,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 23:45:44,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 23:45:44,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 23:45:44,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (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 [2021-06-10 23:45:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-06-10 23:45:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 23:45:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 23:45:44,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 23:45:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-10 23:45:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-10 23:45:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 23:45:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure myThread [2021-06-10 23:45:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure myThread [2021-06-10 23:45:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 23:45:44,161 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 23:45:44,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 23:45:44,371 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-10 23:45:44,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:45:44 BoogieIcfgContainer [2021-06-10 23:45:44,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 23:45:44,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 23:45:44,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 23:45:44,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 23:45:44,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:45:43" (1/3) ... [2021-06-10 23:45:44,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a5f76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:45:44, skipping insertion in model container [2021-06-10 23:45:44,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:45:44" (2/3) ... [2021-06-10 23:45:44,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a5f76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:45:44, skipping insertion in model container [2021-06-10 23:45:44,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:45:44" (3/3) ... [2021-06-10 23:45:44,386 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadReturn.c [2021-06-10 23:45:44,390 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 23:45:44,408 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 23:45:44,409 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 23:45:44,438 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:45:44,438 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:45:44,438 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:45:44,438 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:45:44,440 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:45:44,440 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:45:44,445 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-10 23:45:44,461 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-10 23:45:44,478 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 23:45:44,479 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 23:45:44,479 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 23:45:44,479 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 23:45:44,479 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 23:45:44,479 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 23:45:44,479 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 23:45:44,479 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 23:45:44,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2021-06-10 23:45:44,525 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-06-10 23:45:44,525 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 23:45:44,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 0/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 23:45:44,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2021-06-10 23:45:44,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 44 flow [2021-06-10 23:45:44,531 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 23:45:44,540 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 19 transitions, 44 flow [2021-06-10 23:45:44,544 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 19 transitions, 44 flow [2021-06-10 23:45:44,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 44 flow [2021-06-10 23:45:44,552 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-06-10 23:45:44,552 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 23:45:44,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 19 events. 0/19 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 23:45:44,554 INFO L151 LiptonReduction]: Number of co-enabled transitions 8 [2021-06-10 23:45:44,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:44,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:45:44,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 23:45:44,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:44,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:44,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:44,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:44,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 23:45:44,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 23:45:44,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:44,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:44,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 23:45:44,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-10 23:45:44,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:44,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:44,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 23:45:44,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 23:45:45,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 23:45:45,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 23:45:45,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-10 23:45:45,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,159 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-10 23:45:45,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,168 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-10 23:45:45,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,170 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-10 23:45:45,171 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:1 [2021-06-10 23:45:45,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 23:45:45,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 23:45:45,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 23:45:45,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 23:45:45,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 23:45:45,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 23:45:45,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 23:45:45,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 23:45:45,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 23:45:45,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 23:45:45,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 23:45:45,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-10 23:45:45,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-06-10 23:45:45,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-06-10 23:45:45,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-10 23:45:45,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,568 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-10 23:45:45,580 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,586 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-10 23:45:45,596 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 23:45:45,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 23:45:45,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 23:45:45,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-10 23:45:45,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:45:45,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 23:45:45,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 23:45:45,632 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-10 23:45:45,632 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:58, output treesize:28 [2021-06-10 23:45:45,636 INFO L163 LiptonReduction]: Checked pairs total: 4 [2021-06-10 23:45:45,636 INFO L165 LiptonReduction]: Total number of compositions: 13 [2021-06-10 23:45:45,639 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1110 [2021-06-10 23:45:45,650 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-10 23:45:45,650 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-10 23:45:45,650 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:45:45,651 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-10 23:45:45,651 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:45:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:45:45,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1201907998, now seen corresponding path program 1 times [2021-06-10 23:45:45,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:45:45,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775693606] [2021-06-10 23:45:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:45:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:45:45,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:45:45,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:45:45,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 23:45:45,840 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-06-10 23:45:45,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-10 23:45:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:45:45,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775693606] [2021-06-10 23:45:45,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:45:45,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:45:45,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850324057] [2021-06-10 23:45:45,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 23:45:45,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:45:45,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 23:45:45,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 23:45:45,884 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 42 [2021-06-10 23:45:45,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 6 transitions, 18 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2021-06-10 23:45:45,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:45:45,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 42 [2021-06-10 23:45:45,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:45:45,910 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-10 23:45:45,911 INFO L130 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2021-06-10 23:45:45,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 5 events. 0/5 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 2/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-10 23:45:45,912 INFO L132 encePairwiseOnDemand]: 39/42 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-06-10 23:45:45,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 5 transitions, 24 flow [2021-06-10 23:45:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 23:45:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 23:45:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2021-06-10 23:45:45,921 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-06-10 23:45:45,922 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2021-06-10 23:45:45,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2021-06-10 23:45:45,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:45:45,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2021-06-10 23:45:45,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2021-06-10 23:45:45,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2021-06-10 23:45:45,934 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2021-06-10 23:45:45,936 INFO L185 Difference]: Start difference. First operand has 10 places, 6 transitions, 18 flow. Second operand 4 states and 117 transitions. [2021-06-10 23:45:45,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 5 transitions, 24 flow [2021-06-10 23:45:45,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 5 transitions, 20 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 23:45:45,939 INFO L241 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2021-06-10 23:45:45,940 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=7, 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=4, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2021-06-10 23:45:45,941 INFO L343 CegarLoopForPetriNet]: 10 programPoint places, 0 predicate places. [2021-06-10 23:45:45,941 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2021-06-10 23:45:45,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2021-06-10 23:45:45,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 23:45:45,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:45:45 BasicIcfg [2021-06-10 23:45:45,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 23:45:45,945 INFO L168 Benchmark]: Toolchain (without parser) took 2119.04 ms. Allocated memory is still 385.9 MB. Free memory was 348.5 MB in the beginning and 323.7 MB in the end (delta: 24.8 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.0 GB. [2021-06-10 23:45:45,946 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 385.9 MB. Free memory was 366.7 MB in the beginning and 366.7 MB in the end (delta: 70.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:45:45,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.34 ms. Allocated memory is still 385.9 MB. Free memory was 348.3 MB in the beginning and 364.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-06-10 23:45:45,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 385.9 MB. Free memory was 364.6 MB in the beginning and 368.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:45:45,949 INFO L168 Benchmark]: Boogie Preprocessor took 24.73 ms. Allocated memory is still 385.9 MB. Free memory was 368.8 MB in the beginning and 367.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:45:45,950 INFO L168 Benchmark]: RCFGBuilder took 290.47 ms. Allocated memory is still 385.9 MB. Free memory was 367.7 MB in the beginning and 354.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 23:45:45,950 INFO L168 Benchmark]: TraceAbstraction took 1563.04 ms. Allocated memory is still 385.9 MB. Free memory was 353.0 MB in the beginning and 323.7 MB in the end (delta: 29.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.0 GB. [2021-06-10 23:45:45,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 385.9 MB. Free memory was 366.7 MB in the beginning and 366.7 MB in the end (delta: 70.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 189.34 ms. Allocated memory is still 385.9 MB. Free memory was 348.3 MB in the beginning and 364.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 385.9 MB. Free memory was 364.6 MB in the beginning and 368.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.73 ms. Allocated memory is still 385.9 MB. Free memory was 368.8 MB in the beginning and 367.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 290.47 ms. Allocated memory is still 385.9 MB. Free memory was 367.7 MB in the beginning and 354.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1563.04 ms. Allocated memory is still 385.9 MB. Free memory was 353.0 MB in the beginning and 323.7 MB in the end (delta: 29.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1092.5ms, 23 PlacesBefore, 10 PlacesAfterwards, 19 TransitionsBefore, 6 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 31]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1467.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 64.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1167.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 8.6ms SsaConstructionTime, 31.5ms SatisfiabilityAnalysisTime, 108.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...