./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/sync01.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 993484b14586fce8c379b166a15b1fad6f27a8c2 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:07:20,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:07:20,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:07:20,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:07:20,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:07:20,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:07:20,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:07:20,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:07:20,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:07:20,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:07:20,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:07:20,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:07:20,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:07:20,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:07:20,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:07:20,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:07:20,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:07:20,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:07:20,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:07:20,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:07:20,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:07:20,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:07:20,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:07:20,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:07:20,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:07:20,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:07:20,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:07:20,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:07:20,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:07:20,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:07:20,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:07:20,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:07:20,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:07:20,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:07:20,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:07:20,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:07:20,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:07:20,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:07:20,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:07:20,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:07:20,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:07:20,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:07:20,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:07:20,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:07:20,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:07:20,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:07:20,321 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:07:20,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:07:20,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:07:20,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:07:20,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:07:20,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:07:20,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:07:20,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:07:20,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:07:20,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:07:20,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:07:20,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:07:20,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:07:20,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:07:20,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:07:20,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:07:20,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:07:20,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:07:20,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:07:20,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:07:20,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:07:20,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:07:20,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:07:20,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:07:20,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:07:20,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 993484b14586fce8c379b166a15b1fad6f27a8c2 [2020-10-26 00:07:20,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:07:20,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:07:20,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:07:20,806 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:07:20,808 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:07:20,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sync01.i [2020-10-26 00:07:20,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c7b5c04/8e15f09b85d04f7e86f810fcff9aed9e/FLAG935246d18 [2020-10-26 00:07:21,741 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:07:21,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sync01.i [2020-10-26 00:07:21,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c7b5c04/8e15f09b85d04f7e86f810fcff9aed9e/FLAG935246d18 [2020-10-26 00:07:22,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c7b5c04/8e15f09b85d04f7e86f810fcff9aed9e [2020-10-26 00:07:22,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:07:22,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:07:22,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:07:22,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:07:22,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:07:22,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:22,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60df9b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22, skipping insertion in model container [2020-10-26 00:07:22,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:22,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:07:22,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:07:22,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:07:22,768 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:07:22,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:07:22,993 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:07:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22 WrapperNode [2020-10-26 00:07:22,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:07:22,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:07:22,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:07:22,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:07:23,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:07:23,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:07:23,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:07:23,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:07:23,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (1/1) ... [2020-10-26 00:07:23,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:07:23,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:07:23,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:07:23,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:07:23,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (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 [2020-10-26 00:07:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:07:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:07:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 00:07:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-26 00:07:23,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-26 00:07:23,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-10-26 00:07:23,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-10-26 00:07:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:07:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-26 00:07:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:07:23,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:07:23,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:07:23,195 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:07:23,920 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:07:23,921 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-26 00:07:23,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:23 BoogieIcfgContainer [2020-10-26 00:07:23,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:07:23,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:07:23,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:07:23,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:07:23,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:07:22" (1/3) ... [2020-10-26 00:07:23,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:07:23, skipping insertion in model container [2020-10-26 00:07:23,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:22" (2/3) ... [2020-10-26 00:07:23,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5201d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:07:23, skipping insertion in model container [2020-10-26 00:07:23,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:23" (3/3) ... [2020-10-26 00:07:23,940 INFO L111 eAbstractionObserver]: Analyzing ICFG sync01.i [2020-10-26 00:07:23,954 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:07:23,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:07:23,971 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:07:23,972 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:07:24,017 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,018 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,018 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,018 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,019 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,019 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,019 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,020 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,020 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,020 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,021 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,023 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,023 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,024 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,024 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,024 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,025 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,025 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,026 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,026 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,027 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,028 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,028 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,028 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,029 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,029 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,032 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,032 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,034 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,034 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,035 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,035 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,035 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,041 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,042 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,042 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,042 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,042 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,042 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,043 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:24,057 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-26 00:07:24,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-26 00:07:24,113 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:07:24,114 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:07:24,114 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:07:24,114 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:07:24,115 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:07:24,115 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:07:24,115 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:07:24,115 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:07:24,136 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:07:24,140 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 222 flow [2020-10-26 00:07:24,144 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 100 transitions, 222 flow [2020-10-26 00:07:24,147 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 222 flow [2020-10-26 00:07:24,246 INFO L129 PetriNetUnfolder]: 7/100 cut-off events. [2020-10-26 00:07:24,247 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-26 00:07:24,263 INFO L80 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 100 events. 7/100 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2020-10-26 00:07:24,269 INFO L116 LiptonReduction]: Number of co-enabled transitions 840 [2020-10-26 00:07:26,469 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-26 00:07:26,594 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-26 00:07:26,951 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-26 00:07:27,240 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-26 00:07:27,750 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-26 00:07:28,182 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 00:07:29,425 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 181 DAG size of output: 169 [2020-10-26 00:07:30,010 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-26 00:07:30,019 INFO L131 LiptonReduction]: Checked pairs total: 3706 [2020-10-26 00:07:30,020 INFO L133 LiptonReduction]: Total number of compositions: 83 [2020-10-26 00:07:30,027 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 34 transitions, 90 flow [2020-10-26 00:07:30,047 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-10-26 00:07:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-10-26 00:07:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:07:30,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:30,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:30,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:30,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:30,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1987548451, now seen corresponding path program 1 times [2020-10-26 00:07:30,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:30,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587025955] [2020-10-26 00:07:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:30,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587025955] [2020-10-26 00:07:30,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:30,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:07:30,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689027039] [2020-10-26 00:07:30,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-26 00:07:30,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:30,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-26 00:07:30,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:07:30,367 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2020-10-26 00:07:30,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:30,394 INFO L93 Difference]: Finished difference Result 198 states and 455 transitions. [2020-10-26 00:07:30,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-26 00:07:30,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-10-26 00:07:30,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:30,412 INFO L225 Difference]: With dead ends: 198 [2020-10-26 00:07:30,413 INFO L226 Difference]: Without dead ends: 197 [2020-10-26 00:07:30,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-26 00:07:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-26 00:07:30,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-10-26 00:07:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-26 00:07:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 454 transitions. [2020-10-26 00:07:30,481 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 454 transitions. Word has length 15 [2020-10-26 00:07:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:30,482 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 454 transitions. [2020-10-26 00:07:30,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-26 00:07:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 454 transitions. [2020-10-26 00:07:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 00:07:30,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:30,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:30,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:07:30,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:30,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1186536217, now seen corresponding path program 1 times [2020-10-26 00:07:30,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:30,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135174213] [2020-10-26 00:07:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:30,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135174213] [2020-10-26 00:07:30,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:30,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:07:30,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181431842] [2020-10-26 00:07:30,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 00:07:30,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:30,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 00:07:30,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:30,636 INFO L87 Difference]: Start difference. First operand 197 states and 454 transitions. Second operand 3 states. [2020-10-26 00:07:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:30,674 INFO L93 Difference]: Finished difference Result 107 states and 223 transitions. [2020-10-26 00:07:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 00:07:30,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-26 00:07:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:30,676 INFO L225 Difference]: With dead ends: 107 [2020-10-26 00:07:30,676 INFO L226 Difference]: Without dead ends: 107 [2020-10-26 00:07:30,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 00:07:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-26 00:07:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-26 00:07:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-26 00:07:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 223 transitions. [2020-10-26 00:07:30,691 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 223 transitions. Word has length 21 [2020-10-26 00:07:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:30,691 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 223 transitions. [2020-10-26 00:07:30,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 00:07:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 223 transitions. [2020-10-26 00:07:30,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 00:07:30,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:30,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:30,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:07:30,696 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:30,697 INFO L82 PathProgramCache]: Analyzing trace with hash -128024041, now seen corresponding path program 2 times [2020-10-26 00:07:30,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:30,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149872804] [2020-10-26 00:07:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:30,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149872804] [2020-10-26 00:07:30,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:30,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:07:30,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248886523] [2020-10-26 00:07:30,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:07:30,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:30,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:07:30,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:07:30,851 INFO L87 Difference]: Start difference. First operand 107 states and 223 transitions. Second operand 5 states. [2020-10-26 00:07:30,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:30,951 INFO L93 Difference]: Finished difference Result 95 states and 177 transitions. [2020-10-26 00:07:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:07:30,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-26 00:07:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:30,953 INFO L225 Difference]: With dead ends: 95 [2020-10-26 00:07:30,953 INFO L226 Difference]: Without dead ends: 95 [2020-10-26 00:07:30,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:07:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-26 00:07:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-26 00:07:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-26 00:07:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 177 transitions. [2020-10-26 00:07:30,966 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 177 transitions. Word has length 21 [2020-10-26 00:07:30,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:30,967 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 177 transitions. [2020-10-26 00:07:30,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:07:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 177 transitions. [2020-10-26 00:07:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 00:07:30,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:30,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:30,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:07:30,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash -436496159, now seen corresponding path program 3 times [2020-10-26 00:07:30,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:30,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673447100] [2020-10-26 00:07:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:31,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673447100] [2020-10-26 00:07:31,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:31,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 00:07:31,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363371722] [2020-10-26 00:07:31,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 00:07:31,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:31,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 00:07:31,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 00:07:31,185 INFO L87 Difference]: Start difference. First operand 95 states and 177 transitions. Second operand 7 states. [2020-10-26 00:07:31,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:31,293 INFO L93 Difference]: Finished difference Result 87 states and 155 transitions. [2020-10-26 00:07:31,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:07:31,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 00:07:31,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:31,296 INFO L225 Difference]: With dead ends: 87 [2020-10-26 00:07:31,296 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:07:31,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:07:31,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:07:31,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:07:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:07:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:07:31,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-26 00:07:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:31,297 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:07:31,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 00:07:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:07:31,298 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:07:31,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:07:31,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:07:31 BasicIcfg [2020-10-26 00:07:31,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:07:31,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:07:31,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:07:31,310 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:07:31,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:23" (3/4) ... [2020-10-26 00:07:31,315 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:07:31,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-10-26 00:07:31,327 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2020-10-26 00:07:31,335 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-26 00:07:31,336 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:07:31,342 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:07:31,344 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:07:31,407 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:07:31,407 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:07:31,410 INFO L168 Benchmark]: Toolchain (without parser) took 9379.08 ms. Allocated memory was 48.2 MB in the beginning and 130.0 MB in the end (delta: 81.8 MB). Free memory was 24.4 MB in the beginning and 101.1 MB in the end (delta: -76.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:31,410 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 37.7 MB. Free memory was 20.5 MB in the beginning and 20.5 MB in the end (delta: 56.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:07:31,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 956.09 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 23.7 MB in the beginning and 31.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:31,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.94 ms. Allocated memory is still 60.8 MB. Free memory was 31.8 MB in the beginning and 29.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:31,413 INFO L168 Benchmark]: Boogie Preprocessor took 39.73 ms. Allocated memory is still 60.8 MB. Free memory was 29.5 MB in the beginning and 28.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:31,414 INFO L168 Benchmark]: RCFGBuilder took 829.80 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 37.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:31,415 INFO L168 Benchmark]: TraceAbstraction took 7378.59 ms. Allocated memory was 60.8 MB in the beginning and 130.0 MB in the end (delta: 69.2 MB). Free memory was 37.5 MB in the beginning and 104.2 MB in the end (delta: -66.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:31,415 INFO L168 Benchmark]: Witness Printer took 98.79 ms. Allocated memory is still 130.0 MB. Free memory was 104.2 MB in the beginning and 101.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:31,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 37.7 MB. Free memory was 20.5 MB in the beginning and 20.5 MB in the end (delta: 56.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 956.09 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 23.7 MB in the beginning and 31.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.94 ms. Allocated memory is still 60.8 MB. Free memory was 31.8 MB in the beginning and 29.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.73 ms. Allocated memory is still 60.8 MB. Free memory was 29.5 MB in the beginning and 28.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 829.80 ms. Allocated memory is still 60.8 MB. Free memory was 28.1 MB in the beginning and 37.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7378.59 ms. Allocated memory was 60.8 MB in the beginning and 130.0 MB in the end (delta: 69.2 MB). Free memory was 37.5 MB in the beginning and 104.2 MB in the end (delta: -66.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Witness Printer took 98.79 ms. Allocated memory is still 130.0 MB. Free memory was 104.2 MB in the beginning and 101.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 606 VarBasedMoverChecksPositive, 71 VarBasedMoverChecksNegative, 36 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 212 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.8s, 99 PlacesBefore, 35 PlacesAfterwards, 100 TransitionsBefore, 34 TransitionsAfterwards, 840 CoEnabledTransitionPairs, 7 FixpointIterations, 52 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 TotalNumberOfCompositions, 3706 MoverChecksTotal - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 110 SDtfs, 78 SDslu, 141 SDs, 0 SdLazy, 70 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 3076 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...