/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/18-conditional-atomic.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:37:59,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:37:59,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:37:59,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:37:59,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:37:59,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:37:59,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:37:59,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:37:59,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:37:59,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:37:59,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:37:59,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:37:59,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:37:59,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:37:59,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:37:59,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:37:59,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:37:59,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:37:59,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:37:59,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:37:59,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:37:59,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:37:59,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:37:59,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:37:59,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 17:37:59,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 17:37:59,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 17:37:59,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 17:37:59,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 17:37:59,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 17:37:59,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 17:37:59,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 17:37:59,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 17:37:59,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 17:37:59,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 17:37:59,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 17:37:59,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 17:37:59,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 17:37:59,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:37:59,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:37:59,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:37:59,096 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-RepeatedSemanticLbe.epf [2021-03-25 17:37:59,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:37:59,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:37:59,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:37:59,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:37:59,117 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:37:59,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:37:59,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:37:59,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:37:59,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:37:59,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:37:59,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:37:59,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:37:59,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:37:59,119 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:37:59,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:37:59,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:37:59,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:37:59,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:37:59,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:37:59,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:37:59,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:37:59,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:37:59,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:37:59,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:37:59,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:37:59,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:37:59,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:37:59,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:37:59,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:37:59,121 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:37:59,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:37:59,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:37:59,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:37:59,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 17:37:59,404 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 17:37:59,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/18-conditional-atomic.c [2021-03-25 17:37:59,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992d6c596/c708d32d0a9e4da59ea37ef87f1536b1/FLAGc65d41aee [2021-03-25 17:37:59,995 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 17:37:59,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/18-conditional-atomic.c [2021-03-25 17:37:59,996 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:38:00,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992d6c596/c708d32d0a9e4da59ea37ef87f1536b1/FLAGc65d41aee [2021-03-25 17:38:00,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992d6c596/c708d32d0a9e4da59ea37ef87f1536b1 [2021-03-25 17:38:00,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:38:00,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 17:38:00,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 17:38:00,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 17:38:00,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 17:38:00,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4faea083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00, skipping insertion in model container [2021-03-25 17:38:00,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 17:38:00,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 17:38:00,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:38:00,487 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 17:38:00,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:38:00,512 INFO L208 MainTranslator]: Completed translation [2021-03-25 17:38:00,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00 WrapperNode [2021-03-25 17:38:00,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 17:38:00,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:38:00,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:38:00,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:38:00,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:38:00,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:38:00,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:38:00,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:38:00,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... [2021-03-25 17:38:00,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:38:00,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:38:00,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:38:00,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:38:00,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:38:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 17:38:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 17:38:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 17:38:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 17:38:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 17:38:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:38:00,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:38:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 17:38:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 17:38:00,604 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 17:38:01,009 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:38:01,009 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 17:38:01,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:38:01 BoogieIcfgContainer [2021-03-25 17:38:01,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:38:01,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:38:01,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:38:01,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:38:01,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:38:00" (1/3) ... [2021-03-25 17:38:01,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18307e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:38:01, skipping insertion in model container [2021-03-25 17:38:01,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:38:00" (2/3) ... [2021-03-25 17:38:01,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18307e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:38:01, skipping insertion in model container [2021-03-25 17:38:01,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:38:01" (3/3) ... [2021-03-25 17:38:01,016 INFO L111 eAbstractionObserver]: Analyzing ICFG 18-conditional-atomic.c [2021-03-25 17:38:01,021 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:38:01,031 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:38:01,032 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:38:01,051 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,052 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,052 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,052 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,053 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,053 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,053 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,053 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,053 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,053 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,054 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,054 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,054 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,055 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,055 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,055 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,055 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,055 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,056 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,056 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,056 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,057 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,058 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,059 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,059 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,059 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,059 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,059 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,059 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,059 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:38:01,062 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:38:01,078 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 17:38:01,105 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:38:01,106 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:38:01,106 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:38:01,106 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:38:01,106 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:38:01,106 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:38:01,106 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:38:01,106 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:38:01,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 53 flow [2021-03-25 17:38:01,147 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-25 17:38:01,147 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:38:01,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 23 events. 0/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 17:38:01,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 53 flow [2021-03-25 17:38:01,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 18 transitions, 39 flow [2021-03-25 17:38:01,156 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:38:01,168 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 18 transitions, 39 flow [2021-03-25 17:38:01,170 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 18 transitions, 39 flow [2021-03-25 17:38:01,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 22 places, 18 transitions, 39 flow [2021-03-25 17:38:01,183 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 17:38:01,183 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:38:01,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 18 events. 0/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 17:38:01,186 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-25 17:38:01,431 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-03-25 17:38:01,711 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-03-25 17:38:01,855 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-03-25 17:38:02,251 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-03-25 17:38:02,378 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-03-25 17:38:04,752 INFO L154 LiptonReduction]: Checked pairs total: 18 [2021-03-25 17:38:04,753 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-25 17:38:04,754 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3599 [2021-03-25 17:38:04,765 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-25 17:38:04,765 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:38:04,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:38:04,766 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-03-25 17:38:04,766 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:38:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:38:04,772 INFO L82 PathProgramCache]: Analyzing trace with hash 168406, now seen corresponding path program 1 times [2021-03-25 17:38:04,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:38:04,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913048186] [2021-03-25 17:38:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:38:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:38:04,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:38:04,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:38:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:38:04,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913048186] [2021-03-25 17:38:04,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:38:04,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 17:38:04,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895543219] [2021-03-25 17:38:04,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:38:04,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:38:04,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:38:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:38:04,946 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 37 [2021-03-25 17:38:04,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 13 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:04,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:38:04,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 37 [2021-03-25 17:38:04,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:38:04,965 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-25 17:38:04,965 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:38:04,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 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. [2021-03-25 17:38:04,966 INFO L132 encePairwiseOnDemand]: 34/37 looper letters, 1 selfloop transitions, 2 changer transitions 0/5 dead transitions. [2021-03-25 17:38:04,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 5 transitions, 19 flow [2021-03-25 17:38:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:38:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:38:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2021-03-25 17:38:04,977 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2021-03-25 17:38:04,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 82 transitions. [2021-03-25 17:38:04,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 82 transitions. [2021-03-25 17:38:04,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:38:04,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 82 transitions. [2021-03-25 17:38:04,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:04,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:04,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:04,990 INFO L185 Difference]: Start difference. First operand has 9 places, 5 transitions, 13 flow. Second operand 3 states and 82 transitions. [2021-03-25 17:38:04,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 5 transitions, 19 flow [2021-03-25 17:38:04,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 5 transitions, 18 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:38:04,995 INFO L241 Difference]: Finished difference. Result has 11 places, 5 transitions, 20 flow [2021-03-25 17:38:04,997 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=11, PETRI_TRANSITIONS=5} [2021-03-25 17:38:05,002 INFO L343 CegarLoopForPetriNet]: 9 programPoint places, 2 predicate places. [2021-03-25 17:38:05,002 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:38:05,002 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 11 places, 5 transitions, 20 flow [2021-03-25 17:38:05,003 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 11 places, 5 transitions, 20 flow [2021-03-25 17:38:05,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 11 places, 5 transitions, 20 flow [2021-03-25 17:38:05,005 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-25 17:38:05,005 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:38:05,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 17:38:05,006 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 17:38:05,239 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-03-25 17:38:05,371 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-03-25 17:38:05,372 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 17:38:05,372 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 17:38:05,373 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 371 [2021-03-25 17:38:05,374 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 4 transitions, 18 flow [2021-03-25 17:38:05,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:05,374 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:38:05,374 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-25 17:38:05,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:38:05,374 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:38:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:38:05,375 INFO L82 PathProgramCache]: Analyzing trace with hash 5220662, now seen corresponding path program 1 times [2021-03-25 17:38:05,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:38:05,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125092793] [2021-03-25 17:38:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:38:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:38:05,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:38:05,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:38:05,407 INFO L142 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-03-25 17:38:05,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:38:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 17:38:05,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125092793] [2021-03-25 17:38:05,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:38:05,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:38:05,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652799568] [2021-03-25 17:38:05,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:38:05,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:38:05,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:38:05,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:38:05,415 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 38 [2021-03-25 17:38:05,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 4 transitions, 18 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:05,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:38:05,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 38 [2021-03-25 17:38:05,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:38:05,423 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-03-25 17:38:05,423 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 17:38:05,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 3 events. 0/3 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. 1/4 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:38:05,424 INFO L132 encePairwiseOnDemand]: 36/38 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2021-03-25 17:38:05,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 3 transitions, 18 flow [2021-03-25 17:38:05,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:38:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:38:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2021-03-25 17:38:05,425 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2021-03-25 17:38:05,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2021-03-25 17:38:05,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2021-03-25 17:38:05,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:38:05,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2021-03-25 17:38:05,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:05,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:05,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:05,427 INFO L185 Difference]: Start difference. First operand has 10 places, 4 transitions, 18 flow. Second operand 3 states and 81 transitions. [2021-03-25 17:38:05,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 3 transitions, 18 flow [2021-03-25 17:38:05,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 8 places, 3 transitions, 12 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 17:38:05,428 INFO L241 Difference]: Finished difference. Result has 8 places, 0 transitions, 0 flow [2021-03-25 17:38:05,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=8, PETRI_TRANSITIONS=0} [2021-03-25 17:38:05,429 INFO L343 CegarLoopForPetriNet]: 9 programPoint places, -1 predicate places. [2021-03-25 17:38:05,429 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:38:05,429 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 8 places, 0 transitions, 0 flow [2021-03-25 17:38:05,429 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 8 places, 0 transitions, 0 flow [2021-03-25 17:38:05,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 17:38:05,429 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 17:38:05,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:38:05,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 17:38:05,430 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 17:38:05,430 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:38:05,430 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:38:05,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 17:38:05,431 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 17:38:05,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:38:05,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:38:05,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:38:05 BasicIcfg [2021-03-25 17:38:05,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:38:05,435 INFO L168 Benchmark]: Toolchain (without parser) took 5158.68 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.4 MB in the beginning and 262.9 MB in the end (delta: -28.5 MB). Peak memory consumption was 76.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:38:05,436 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:38:05,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.59 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.0 MB in the beginning and 343.8 MB in the end (delta: -109.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 17:38:05,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.34 ms. Allocated memory is still 360.7 MB. Free memory was 343.8 MB in the beginning and 342.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:38:05,437 INFO L168 Benchmark]: Boogie Preprocessor took 13.67 ms. Allocated memory is still 360.7 MB. Free memory was 342.7 MB in the beginning and 341.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:38:05,438 INFO L168 Benchmark]: RCFGBuilder took 457.23 ms. Allocated memory is still 360.7 MB. Free memory was 341.5 MB in the beginning and 315.8 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 17:38:05,438 INFO L168 Benchmark]: TraceAbstraction took 4422.82 ms. Allocated memory is still 360.7 MB. Free memory was 315.3 MB in the beginning and 262.9 MB in the end (delta: 52.4 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.0 GB. [2021-03-25 17:38:05,444 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 233.59 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.0 MB in the beginning and 343.8 MB in the end (delta: -109.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.34 ms. Allocated memory is still 360.7 MB. Free memory was 343.8 MB in the beginning and 342.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.67 ms. Allocated memory is still 360.7 MB. Free memory was 342.7 MB in the beginning and 341.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 457.23 ms. Allocated memory is still 360.7 MB. Free memory was 341.5 MB in the beginning and 315.8 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4422.82 ms. Allocated memory is still 360.7 MB. Free memory was 315.3 MB in the beginning and 262.9 MB in the end (delta: 52.4 MB). Peak memory consumption was 55.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3582.8ms, 22 PlacesBefore, 9 PlacesAfterwards, 18 TransitionsBefore, 5 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2088, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 2029, unknown conditional: 0, unknown unconditional: 2029] ], Cache Queries: [ total: 16, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 369.7ms, 11 PlacesBefore, 10 PlacesAfterwards, 5 TransitionsBefore, 4 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 8 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 41]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4330.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 75.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3656.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.0ms SsaConstructionTime, 31.7ms SatisfiabilityAnalysisTime, 67.9ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...