./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/19_time_var_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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-ext/19_time_var_mutex.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6e5b05d1d8a90ddac5eb7cbebfd54f127d9dc56 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:58:04,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:58:04,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:58:04,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:58:04,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:58:04,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:58:04,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:58:04,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:58:04,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:58:04,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:58:04,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:58:04,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:58:04,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:58:04,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:58:04,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:58:04,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:58:04,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:58:04,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:58:04,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:58:04,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:58:04,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:58:04,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:58:04,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:58:04,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:58:04,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:58:04,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:58:04,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:58:04,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:58:04,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:58:04,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:58:04,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:58:04,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:58:04,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:58:04,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:58:04,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:58:04,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:58:04,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:58:04,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:58:04,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:58:04,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:58:04,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:58:04,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:58:04,858 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:58:04,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:58:04,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:58:04,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:58:04,860 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:58:04,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:58:04,861 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:58:04,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:58:04,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:58:04,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:58:04,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:58:04,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:58:04,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:58:04,863 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:58:04,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:58:04,863 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:58:04,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:58:04,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:58:04,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:58:04,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:58:04,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:58:04,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:58:04,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:58:04,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:58:04,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:58:04,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:58:04,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:58:04,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:58:04,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:58:04,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> b6e5b05d1d8a90ddac5eb7cbebfd54f127d9dc56 [2019-11-28 17:58:05,179 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:58:05,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:58:05,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:58:05,208 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:58:05,209 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:58:05,210 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/19_time_var_mutex.i [2019-11-28 17:58:05,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b824ae2/f835c8af4bca43e6aeb73df06a1c505b/FLAG5015d8ed8 [2019-11-28 17:58:05,879 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:58:05,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/19_time_var_mutex.i [2019-11-28 17:58:05,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b824ae2/f835c8af4bca43e6aeb73df06a1c505b/FLAG5015d8ed8 [2019-11-28 17:58:06,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b824ae2/f835c8af4bca43e6aeb73df06a1c505b [2019-11-28 17:58:06,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:58:06,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:58:06,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:58:06,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:58:06,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:58:06,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8488f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06, skipping insertion in model container [2019-11-28 17:58:06,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:58:06,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:58:06,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:58:06,670 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:58:06,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:58:06,819 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:58:06,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06 WrapperNode [2019-11-28 17:58:06,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:58:06,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:58:06,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:58:06,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:58:06,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:58:06,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:58:06,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:58:06,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:58:06,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (1/1) ... [2019-11-28 17:58:06,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:58:06,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:58:06,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:58:06,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:58:06,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (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 [2019-11-28 17:58:06,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 17:58:06,966 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-28 17:58:06,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-28 17:58:06,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 17:58:06,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 17:58:06,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 17:58:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-28 17:58:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:58:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:58:06,970 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-28 17:58:07,109 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-28 17:58:07,111 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel#2 [2019-11-28 17:58:07,112 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-28 17:58:07,126 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel#2 [2019-11-28 17:58:07,252 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_acquire_returnLabel [2019-11-28 17:58:07,253 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_release_returnLabel [2019-11-28 17:58:07,317 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:58:07,317 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 17:58:07,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:07 BoogieIcfgContainer [2019-11-28 17:58:07,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:58:07,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:58:07,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:58:07,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:58:07,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:58:06" (1/3) ... [2019-11-28 17:58:07,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578543fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:58:07, skipping insertion in model container [2019-11-28 17:58:07,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:58:06" (2/3) ... [2019-11-28 17:58:07,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578543fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:58:07, skipping insertion in model container [2019-11-28 17:58:07,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:07" (3/3) ... [2019-11-28 17:58:07,328 INFO L109 eAbstractionObserver]: Analyzing ICFG 19_time_var_mutex.i [2019-11-28 17:58:07,338 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-28 17:58:07,341 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:58:07,353 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-28 17:58:07,354 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-11-28 17:58:07,379 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,380 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,380 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,380 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,380 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,381 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,381 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,381 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,381 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,382 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,383 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,383 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,383 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,384 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_acquire_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,385 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,385 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,386 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,386 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,387 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,388 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,388 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,389 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#in~m.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,389 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_release_~m.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,390 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_release_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,390 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,391 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-28 17:58:07,415 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 17:58:07,432 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:58:07,432 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:58:07,432 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:58:07,433 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:58:07,433 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:58:07,433 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:58:07,433 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:58:07,434 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:58:07,446 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 50 transitions [2019-11-28 17:58:07,449 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 50 places, 50 transitions [2019-11-28 17:58:07,501 INFO L134 PetriNetUnfolder]: 4/49 cut-off events. [2019-11-28 17:58:07,503 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:58:07,512 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 4/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs. 3/46 useless extension candidates. Maximal degree in co-relation 34. Up to 3 conditions per place. [2019-11-28 17:58:07,516 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 50 places, 50 transitions [2019-11-28 17:58:07,539 INFO L134 PetriNetUnfolder]: 4/49 cut-off events. [2019-11-28 17:58:07,539 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-11-28 17:58:07,541 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 4/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs. 3/46 useless extension candidates. Maximal degree in co-relation 34. Up to 3 conditions per place. [2019-11-28 17:58:07,543 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 546 [2019-11-28 17:58:07,544 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-11-28 17:58:09,509 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-28 17:58:09,978 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-11-28 17:58:10,076 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1812 [2019-11-28 17:58:10,078 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2019-11-28 17:58:10,082 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 20 transitions [2019-11-28 17:58:10,099 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 66 states. [2019-11-28 17:58:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2019-11-28 17:58:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:58:10,116 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:10,116 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:58:10,117 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:10,123 INFO L82 PathProgramCache]: Analyzing trace with hash 195273394, now seen corresponding path program 1 times [2019-11-28 17:58:10,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:10,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150667567] [2019-11-28 17:58:10,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:10,309 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150667567] [2019-11-28 17:58:10,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:10,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:10,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116801686] [2019-11-28 17:58:10,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:10,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:10,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:10,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:10,337 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2019-11-28 17:58:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:10,368 INFO L93 Difference]: Finished difference Result 66 states and 122 transitions. [2019-11-28 17:58:10,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:10,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 17:58:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:10,386 INFO L225 Difference]: With dead ends: 66 [2019-11-28 17:58:10,386 INFO L226 Difference]: Without dead ends: 58 [2019-11-28 17:58:10,391 INFO L630 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 [2019-11-28 17:58:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-28 17:58:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2019-11-28 17:58:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-28 17:58:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 104 transitions. [2019-11-28 17:58:10,447 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 104 transitions. Word has length 5 [2019-11-28 17:58:10,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:10,448 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 104 transitions. [2019-11-28 17:58:10,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:10,448 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 104 transitions. [2019-11-28 17:58:10,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 17:58:10,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:10,450 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 17:58:10,451 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash 195298719, now seen corresponding path program 1 times [2019-11-28 17:58:10,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:10,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762073096] [2019-11-28 17:58:10,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:10,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762073096] [2019-11-28 17:58:10,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:10,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:10,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204027720] [2019-11-28 17:58:10,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:10,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:10,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:10,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:10,538 INFO L87 Difference]: Start difference. First operand 58 states and 104 transitions. Second operand 3 states. [2019-11-28 17:58:10,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:10,561 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2019-11-28 17:58:10,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:10,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 17:58:10,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:10,563 INFO L225 Difference]: With dead ends: 64 [2019-11-28 17:58:10,564 INFO L226 Difference]: Without dead ends: 58 [2019-11-28 17:58:10,565 INFO L630 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 [2019-11-28 17:58:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-28 17:58:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2019-11-28 17:58:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 17:58:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 89 transitions. [2019-11-28 17:58:10,574 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 89 transitions. Word has length 5 [2019-11-28 17:58:10,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:10,575 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 89 transitions. [2019-11-28 17:58:10,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:10,575 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 89 transitions. [2019-11-28 17:58:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 17:58:10,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:10,576 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:10,576 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:10,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1344000906, now seen corresponding path program 1 times [2019-11-28 17:58:10,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:10,577 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039075192] [2019-11-28 17:58:10,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:10,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039075192] [2019-11-28 17:58:10,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:10,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 17:58:10,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895211958] [2019-11-28 17:58:10,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:10,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:10,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:10,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:10,656 INFO L87 Difference]: Start difference. First operand 52 states and 89 transitions. Second operand 3 states. [2019-11-28 17:58:10,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:10,683 INFO L93 Difference]: Finished difference Result 50 states and 80 transitions. [2019-11-28 17:58:10,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:10,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-28 17:58:10,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:10,685 INFO L225 Difference]: With dead ends: 50 [2019-11-28 17:58:10,685 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 17:58:10,686 INFO L630 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 [2019-11-28 17:58:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 17:58:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-28 17:58:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 17:58:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2019-11-28 17:58:10,691 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 7 [2019-11-28 17:58:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:10,692 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2019-11-28 17:58:10,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2019-11-28 17:58:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 17:58:10,693 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:10,693 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:10,694 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:10,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1200314283, now seen corresponding path program 1 times [2019-11-28 17:58:10,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:10,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680295855] [2019-11-28 17:58:10,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:10,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680295855] [2019-11-28 17:58:10,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:10,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:58:10,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673380979] [2019-11-28 17:58:10,759 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:10,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:10,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:10,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:10,761 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 3 states. [2019-11-28 17:58:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:10,772 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2019-11-28 17:58:10,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:10,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 17:58:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:10,775 INFO L225 Difference]: With dead ends: 30 [2019-11-28 17:58:10,775 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 17:58:10,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 17:58:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-28 17:58:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-28 17:58:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-28 17:58:10,779 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 9 [2019-11-28 17:58:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:10,780 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-28 17:58:10,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-28 17:58:10,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 17:58:10,780 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:58:10,781 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:58:10,781 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:58:10,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:58:10,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1222232862, now seen corresponding path program 1 times [2019-11-28 17:58:10,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:58:10,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699075923] [2019-11-28 17:58:10,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:58:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:58:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:58:10,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699075923] [2019-11-28 17:58:10,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:58:10,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 17:58:10,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708750327] [2019-11-28 17:58:10,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 17:58:10,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:58:10,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 17:58:10,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:10,845 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 3 states. [2019-11-28 17:58:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:58:10,860 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-28 17:58:10,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 17:58:10,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-28 17:58:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:58:10,861 INFO L225 Difference]: With dead ends: 9 [2019-11-28 17:58:10,862 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:58:10,862 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 17:58:10,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:58:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:58:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:58:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:58:10,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-28 17:58:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:58:10,864 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:58:10,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 17:58:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:58:10,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:58:10,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:58:10 BasicIcfg [2019-11-28 17:58:10,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:58:10,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:58:10,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:58:10,870 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:58:10,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:58:07" (3/4) ... [2019-11-28 17:58:10,874 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:58:10,881 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-11-28 17:58:10,886 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-28 17:58:10,886 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-28 17:58:10,887 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 17:58:10,932 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:58:10,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:58:10,935 INFO L168 Benchmark]: Toolchain (without parser) took 4805.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 207.6 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:10,935 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:58:10,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:10,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:10,937 INFO L168 Benchmark]: Boogie Preprocessor took 31.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:58:10,938 INFO L168 Benchmark]: RCFGBuilder took 412.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:10,939 INFO L168 Benchmark]: TraceAbstraction took 3548.55 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -45.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:58:10,939 INFO L168 Benchmark]: Witness Printer took 63.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-28 17:58:10,943 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 690.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -148.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 412.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3548.55 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -45.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * Witness Printer took 63.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.6s, 50 ProgramPointsBefore, 19 ProgramPointsAfterwards, 50 TransitionsBefore, 20 TransitionsAfterwards, 546 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 277 VarBasedMoverChecksPositive, 77 VarBasedMoverChecksNegative, 61 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.8s, 0 MoverChecksTotal, 1812 CheckedPairsTotal, 43 TotalNumberOfCompositions - PositiveResult [Line: 699]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 708]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 47 locations, 2 error locations. Result: SAFE, OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 38 SDslu, 32 SDs, 0 SdLazy, 20 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...