./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c -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 fc0f46997e98771fca7eb2c46739b0e840769bb8e75e95a3157bfd8ae3e42d71 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:28,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:28,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:28,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:28,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:28,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:28,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:28,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:28,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:28,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:28,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:28,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:28,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:28,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:28,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:28,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:28,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:28,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:28,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:28,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:28,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:28,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:28,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:28,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:28,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:28,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:28,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:28,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:28,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:28,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:28,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:28,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:28,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:28,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:28,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:28,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:28,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:28,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:28,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:28,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:28,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:28,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 19:54:28,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:28,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:28,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:28,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:28,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:28,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:28,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:28,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:28,679 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:28,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:28,679 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:28,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 19:54:28,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:28,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:28,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:28,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:28,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:28,681 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:28,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:28,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:28,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:28,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:28,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:28,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:28,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:28,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:28,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:28,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:28,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 19:54:28,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 19:54:28,684 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:28,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:28,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:28,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc0f46997e98771fca7eb2c46739b0e840769bb8e75e95a3157bfd8ae3e42d71 [2022-02-20 19:54:28,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:28,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:28,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:28,912 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:28,913 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:28,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c [2022-02-20 19:54:28,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f772e45/85a538bc8d184766b204f4349b9da462/FLAGee398549e [2022-02-20 19:54:29,359 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:29,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c [2022-02-20 19:54:29,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f772e45/85a538bc8d184766b204f4349b9da462/FLAGee398549e [2022-02-20 19:54:29,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f772e45/85a538bc8d184766b204f4349b9da462 [2022-02-20 19:54:29,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:29,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:29,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:29,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:29,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:29,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec452a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29, skipping insertion in model container [2022-02-20 19:54:29,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:29,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:29,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c[913,926] [2022-02-20 19:54:29,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c[5994,6007] [2022-02-20 19:54:29,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:29,819 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:29,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c[913,926] [2022-02-20 19:54:29,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c[5994,6007] [2022-02-20 19:54:29,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:29,895 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:29,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29 WrapperNode [2022-02-20 19:54:29,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:29,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:29,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:29,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:29,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,983 INFO L137 Inliner]: procedures = 68, calls = 79, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 940 [2022-02-20 19:54:29,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:29,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:29,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:29,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:29,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:29,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:30,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:30,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:30,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:30,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:30,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:30,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:30,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:30,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (1/1) ... [2022-02-20 19:54:30,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:30,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:30,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 19:54:30,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 19:54:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:30,105 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:30,105 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:30,105 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:30,106 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:30,106 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:30,106 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:30,107 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:30,107 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:30,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 19:54:30,107 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:30,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:30,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:30,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:30,108 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:30,108 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:30,239 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:30,240 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:31,010 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:31,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:31,028 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-02-20 19:54:31,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:31 BoogieIcfgContainer [2022-02-20 19:54:31,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:31,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:31,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:31,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:31,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:29" (1/3) ... [2022-02-20 19:54:31,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af07ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:31, skipping insertion in model container [2022-02-20 19:54:31,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:29" (2/3) ... [2022-02-20 19:54:31,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6af07ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:31, skipping insertion in model container [2022-02-20 19:54:31,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:31" (3/3) ... [2022-02-20 19:54:31,039 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.10.cil-2.c [2022-02-20 19:54:31,043 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:31,043 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:31,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:31,103 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:54:31,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 405 states, 362 states have (on average 1.6408839779005524) internal successors, (594), 368 states have internal predecessors, (594), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-02-20 19:54:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:31,150 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:31,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:54:31,152 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2061722618, now seen corresponding path program 1 times [2022-02-20 19:54:31,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:54:31,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186386293] [2022-02-20 19:54:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:31,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:54:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:54:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-02-20 19:54:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:54:31,414 INFO L290 TraceCheckUtils]: 0: Hoare triple {408#true} havoc ~__retres1~2; {408#true} is VALID [2022-02-20 19:54:31,414 INFO L290 TraceCheckUtils]: 1: Hoare triple {408#true} assume 0 == ~p_dw_st~0;~__retres1~2 := 1; {408#true} is VALID [2022-02-20 19:54:31,414 INFO L290 TraceCheckUtils]: 2: Hoare triple {408#true} #res := ~__retres1~2; {408#true} is VALID [2022-02-20 19:54:31,415 INFO L290 TraceCheckUtils]: 3: Hoare triple {408#true} assume true; {408#true} is VALID [2022-02-20 19:54:31,415 INFO L284 TraceCheckUtils]: 4: Hoare quadruple {408#true} {409#false} #1599#return; {409#false} is VALID [2022-02-20 19:54:31,416 INFO L290 TraceCheckUtils]: 0: Hoare triple {408#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(19, 2);call #Ultimate.allocInit(12, 3);~q_buf_0~0 := 0;~q_free~0 := 0;~q_read_ev~0 := 0;~q_write_ev~0 := 0;~p_num_write~0 := 0;~p_last_write~0 := 0;~p_dw_st~0 := 0;~p_dw_pc~0 := 0;~p_dw_i~0 := 0;~c_num_read~0 := 0;~c_last_read~0 := 0;~c_dr_st~0 := 0;~c_dr_pc~0 := 0;~c_dr_i~0 := 0;~a_t~0 := 0;~m_pc~0 := 0;~t1_pc~0 := 0;~t2_pc~0 := 0;~t3_pc~0 := 0;~t4_pc~0 := 0;~t5_pc~0 := 0;~t6_pc~0 := 0;~t7_pc~0 := 0;~t8_pc~0 := 0;~t9_pc~0 := 0;~t10_pc~0 := 0;~m_st~0 := 0;~t1_st~0 := 0;~t2_st~0 := 0;~t3_st~0 := 0;~t4_st~0 := 0;~t5_st~0 := 0;~t6_st~0 := 0;~t7_st~0 := 0;~t8_st~0 := 0;~t9_st~0 := 0;~t10_st~0 := 0;~m_i~0 := 0;~t1_i~0 := 0;~t2_i~0 := 0;~t3_i~0 := 0;~t4_i~0 := 0;~t5_i~0 := 0;~t6_i~0 := 0;~t7_i~0 := 0;~t8_i~0 := 0;~t9_i~0 := 0;~t10_i~0 := 0;~M_E~0 := 2;~T1_E~0 := 2;~T2_E~0 := 2;~T3_E~0 := 2;~T4_E~0 := 2;~T5_E~0 := 2;~T6_E~0 := 2;~T7_E~0 := 2;~T8_E~0 := 2;~T9_E~0 := 2;~T10_E~0 := 2;~E_M~0 := 2;~E_1~0 := 2;~E_2~0 := 2;~E_3~0 := 2;~E_4~0 := 2;~E_5~0 := 2;~E_6~0 := 2;~E_7~0 := 2;~E_8~0 := 2;~E_9~0 := 2;~E_10~0 := 2;~token~0 := 0;~local~0 := 0; {408#true} is VALID [2022-02-20 19:54:31,417 INFO L290 TraceCheckUtils]: 1: Hoare triple {408#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet44#1, main_#t~ret45#1, main_#t~ret46#1;assume -2147483648 <= main_#t~nondet44#1 && main_#t~nondet44#1 <= 2147483647; {408#true} is VALID [2022-02-20 19:54:31,417 INFO L290 TraceCheckUtils]: 2: Hoare triple {408#true} assume 0 != main_#t~nondet44#1;havoc main_#t~nondet44#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_~__retres1~3#1;havoc main1_~__retres1~3#1;assume { :begin_inline_init_model1 } true;~q_free~0 := 1;~q_write_ev~0 := 2;~q_read_ev~0 := ~q_write_ev~0;~p_num_write~0 := 0;~p_dw_pc~0 := 0;~p_dw_i~0 := 1;~c_num_read~0 := 0;~c_dr_pc~0 := 0;~c_dr_i~0 := 1; {410#(= ~p_dw_i~0 1)} is VALID [2022-02-20 19:54:31,418 INFO L290 TraceCheckUtils]: 3: Hoare triple {410#(= ~p_dw_i~0 1)} assume { :end_inline_init_model1 } true;assume { :begin_inline_start_simulation1 } true;havoc start_simulation1_#t~ret12#1, start_simulation1_~kernel_st~0#1, start_simulation1_~tmp~3#1;havoc start_simulation1_~kernel_st~0#1;havoc start_simulation1_~tmp~3#1;start_simulation1_~kernel_st~0#1 := 0;assume { :begin_inline_init_threads1 } true; {410#(= ~p_dw_i~0 1)} is VALID [2022-02-20 19:54:31,418 INFO L290 TraceCheckUtils]: 4: Hoare triple {410#(= ~p_dw_i~0 1)} assume !(1 == ~p_dw_i~0);~p_dw_st~0 := 2; {409#false} is VALID [2022-02-20 19:54:31,419 INFO L290 TraceCheckUtils]: 5: Hoare triple {409#false} assume 1 == ~c_dr_i~0;~c_dr_st~0 := 0; {409#false} is VALID [2022-02-20 19:54:31,419 INFO L290 TraceCheckUtils]: 6: Hoare triple {409#false} assume { :end_inline_init_threads1 } true; {409#false} is VALID [2022-02-20 19:54:31,419 INFO L290 TraceCheckUtils]: 7: Hoare triple {409#false} assume !false; {409#false} is VALID [2022-02-20 19:54:31,419 INFO L290 TraceCheckUtils]: 8: Hoare triple {409#false} start_simulation1_~kernel_st~0#1 := 1;assume { :begin_inline_eval1 } true;havoc eval1_#t~ret8#1, eval1_#t~nondet9#1, eval1_#t~nondet10#1, eval1_~tmp~1#1, eval1_~tmp___0~1#1, eval1_~tmp___1~0#1;havoc eval1_~tmp~1#1;havoc eval1_~tmp___0~1#1;havoc eval1_~tmp___1~0#1; {409#false} is VALID [2022-02-20 19:54:31,419 INFO L290 TraceCheckUtils]: 9: Hoare triple {409#false} assume !false; {409#false} is VALID [2022-02-20 19:54:31,420 INFO L272 TraceCheckUtils]: 10: Hoare triple {409#false} call eval1_#t~ret8#1 := exists_runnable_thread1(); {408#true} is VALID [2022-02-20 19:54:31,420 INFO L290 TraceCheckUtils]: 11: Hoare triple {408#true} havoc ~__retres1~2; {408#true} is VALID [2022-02-20 19:54:31,420 INFO L290 TraceCheckUtils]: 12: Hoare triple {408#true} assume 0 == ~p_dw_st~0;~__retres1~2 := 1; {408#true} is VALID [2022-02-20 19:54:31,420 INFO L290 TraceCheckUtils]: 13: Hoare triple {408#true} #res := ~__retres1~2; {408#true} is VALID [2022-02-20 19:54:31,420 INFO L290 TraceCheckUtils]: 14: Hoare triple {408#true} assume true; {408#true} is VALID [2022-02-20 19:54:31,421 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {408#true} {409#false} #1599#return; {409#false} is VALID [2022-02-20 19:54:31,422 INFO L290 TraceCheckUtils]: 16: Hoare triple {409#false} assume -2147483648 <= eval1_#t~ret8#1 && eval1_#t~ret8#1 <= 2147483647;eval1_~tmp___1~0#1 := eval1_#t~ret8#1;havoc eval1_#t~ret8#1; {409#false} is VALID [2022-02-20 19:54:31,422 INFO L290 TraceCheckUtils]: 17: Hoare triple {409#false} assume 0 != eval1_~tmp___1~0#1; {409#false} is VALID [2022-02-20 19:54:31,422 INFO L290 TraceCheckUtils]: 18: Hoare triple {409#false} assume 0 == ~p_dw_st~0;assume -2147483648 <= eval1_#t~nondet9#1 && eval1_#t~nondet9#1 <= 2147483647;eval1_~tmp~1#1 := eval1_#t~nondet9#1;havoc eval1_#t~nondet9#1; {409#false} is VALID [2022-02-20 19:54:31,422 INFO L290 TraceCheckUtils]: 19: Hoare triple {409#false} assume !(0 != eval1_~tmp~1#1); {409#false} is VALID [2022-02-20 19:54:31,423 INFO L272 TraceCheckUtils]: 20: Hoare triple {409#false} call error1(); {409#false} is VALID [2022-02-20 19:54:31,423 INFO L290 TraceCheckUtils]: 21: Hoare triple {409#false} assume !false; {409#false} is VALID [2022-02-20 19:54:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:54:31,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 19:54:31,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186386293] [2022-02-20 19:54:31,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186386293] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:54:31,425 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:54:31,425 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 19:54:31,428 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670005963] [2022-02-20 19:54:31,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:54:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-20 19:54:31,434 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:54:31,436 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:31,458 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:54:31,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 19:54:31,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 19:54:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 19:54:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:54:31,489 INFO L87 Difference]: Start difference. First operand has 405 states, 362 states have (on average 1.6408839779005524) internal successors, (594), 368 states have internal predecessors, (594), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:32,167 INFO L93 Difference]: Finished difference Result 787 states and 1272 transitions. [2022-02-20 19:54:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 19:54:32,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-20 19:54:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:54:32,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1272 transitions. [2022-02-20 19:54:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1272 transitions. [2022-02-20 19:54:32,209 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 1272 transitions. [2022-02-20 19:54:33,137 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1272 edges. 1272 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:54:33,166 INFO L225 Difference]: With dead ends: 787 [2022-02-20 19:54:33,166 INFO L226 Difference]: Without dead ends: 395 [2022-02-20 19:54:33,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:54:33,174 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 95 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:54:33,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1131 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:54:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-02-20 19:54:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-02-20 19:54:33,218 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:54:33,221 INFO L82 GeneralOperation]: Start isEquivalent. First operand 395 states. Second operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:33,222 INFO L74 IsIncluded]: Start isIncluded. First operand 395 states. Second operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:33,223 INFO L87 Difference]: Start difference. First operand 395 states. Second operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:33,244 INFO L93 Difference]: Finished difference Result 395 states and 606 transitions. [2022-02-20 19:54:33,244 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 606 transitions. [2022-02-20 19:54:33,248 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:54:33,248 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:54:33,250 INFO L74 IsIncluded]: Start isIncluded. First operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand 395 states. [2022-02-20 19:54:33,251 INFO L87 Difference]: Start difference. First operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand 395 states. [2022-02-20 19:54:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:33,270 INFO L93 Difference]: Finished difference Result 395 states and 606 transitions. [2022-02-20 19:54:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 606 transitions. [2022-02-20 19:54:33,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:54:33,272 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:54:33,272 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:54:33,272 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:54:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 606 transitions. [2022-02-20 19:54:33,311 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 606 transitions. Word has length 22 [2022-02-20 19:54:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:54:33,311 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 606 transitions. [2022-02-20 19:54:33,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:33,312 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 606 transitions. [2022-02-20 19:54:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:33,312 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:33,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:54:33,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 19:54:33,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:33,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:33,314 INFO L85 PathProgramCache]: Analyzing trace with hash -239099972, now seen corresponding path program 1 times [2022-02-20 19:54:33,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 19:54:33,314 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419120034] [2022-02-20 19:54:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 19:54:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:33,356 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:33,409 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 19:54:33,409 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:33,411 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:33,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:33,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 19:54:33,416 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 19:54:33,419 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:33,464 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:33,465 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 19:54:33,468 INFO L158 Benchmark]: Toolchain (without parser) took 4076.22ms. Allocated memory was 86.0MB in the beginning and 130.0MB in the end (delta: 44.0MB). Free memory was 49.9MB in the beginning and 82.8MB in the end (delta: -33.0MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:33,468 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:33,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.66ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.7MB in the beginning and 67.7MB in the end (delta: -18.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 19:54:33,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.83ms. Allocated memory is still 104.9MB. Free memory was 67.7MB in the beginning and 62.0MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-02-20 19:54:33,470 INFO L158 Benchmark]: Boogie Preprocessor took 44.07ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 57.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:33,470 INFO L158 Benchmark]: RCFGBuilder took 1001.97ms. Allocated memory is still 104.9MB. Free memory was 57.6MB in the beginning and 47.3MB in the end (delta: 10.3MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2022-02-20 19:54:33,470 INFO L158 Benchmark]: TraceAbstraction took 2433.07ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 46.8MB in the beginning and 82.8MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:33,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 86.0MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.66ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 49.7MB in the beginning and 67.7MB in the end (delta: -18.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.83ms. Allocated memory is still 104.9MB. Free memory was 67.7MB in the beginning and 62.0MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.07ms. Allocated memory is still 104.9MB. Free memory was 62.0MB in the beginning and 57.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1001.97ms. Allocated memory is still 104.9MB. Free memory was 57.6MB in the beginning and 47.3MB in the end (delta: 10.3MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2433.07ms. Allocated memory was 104.9MB in the beginning and 130.0MB in the end (delta: 25.2MB). Free memory was 46.8MB in the beginning and 82.8MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 19:54:33,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 fc0f46997e98771fca7eb2c46739b0e840769bb8e75e95a3157bfd8ae3e42d71 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 19:54:35,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 19:54:35,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 19:54:35,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 19:54:35,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 19:54:35,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 19:54:35,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 19:54:35,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 19:54:35,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 19:54:35,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 19:54:35,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 19:54:35,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 19:54:35,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 19:54:35,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 19:54:35,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 19:54:35,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 19:54:35,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 19:54:35,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 19:54:35,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 19:54:35,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 19:54:35,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 19:54:35,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 19:54:35,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 19:54:35,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 19:54:35,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 19:54:35,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 19:54:35,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 19:54:35,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 19:54:35,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 19:54:35,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 19:54:35,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 19:54:35,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 19:54:35,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 19:54:35,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 19:54:35,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 19:54:35,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 19:54:35,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 19:54:35,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 19:54:35,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 19:54:35,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 19:54:35,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 19:54:35,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 19:54:35,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 19:54:35,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 19:54:35,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 19:54:35,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 19:54:35,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 19:54:35,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 19:54:35,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 19:54:35,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 19:54:35,509 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 19:54:35,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 19:54:35,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 19:54:35,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 19:54:35,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 19:54:35,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 19:54:35,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 19:54:35,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 19:54:35,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 19:54:35,511 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 19:54:35,512 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 19:54:35,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 19:54:35,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 19:54:35,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 19:54:35,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 19:54:35,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 19:54:35,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 19:54:35,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 19:54:35,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:35,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 19:54:35,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 19:54:35,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 19:54:35,519 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 19:54:35,519 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 19:54:35,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 19:54:35,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 19:54:35,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 19:54:35,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 19:54:35,521 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc0f46997e98771fca7eb2c46739b0e840769bb8e75e95a3157bfd8ae3e42d71 [2022-02-20 19:54:35,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 19:54:35,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 19:54:35,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 19:54:35,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 19:54:35,844 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 19:54:35,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c [2022-02-20 19:54:35,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e84a1990/827407a4524a4f78adaa8ed0f0f41292/FLAGaf5384b23 [2022-02-20 19:54:36,399 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 19:54:36,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c [2022-02-20 19:54:36,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e84a1990/827407a4524a4f78adaa8ed0f0f41292/FLAGaf5384b23 [2022-02-20 19:54:36,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e84a1990/827407a4524a4f78adaa8ed0f0f41292 [2022-02-20 19:54:36,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 19:54:36,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 19:54:36,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:36,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 19:54:36,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 19:54:36,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f884a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:36, skipping insertion in model container [2022-02-20 19:54:36,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 07:54:36" (1/1) ... [2022-02-20 19:54:36,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 19:54:36,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 19:54:37,076 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c[913,926] [2022-02-20 19:54:37,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c[5994,6007] [2022-02-20 19:54:37,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:37,229 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 19:54:37,239 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c[913,926] [2022-02-20 19:54:37,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-1+token_ring.10.cil-2.c[5994,6007] [2022-02-20 19:54:37,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 19:54:37,335 INFO L208 MainTranslator]: Completed translation [2022-02-20 19:54:37,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37 WrapperNode [2022-02-20 19:54:37,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 19:54:37,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:37,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 19:54:37,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 19:54:37,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,425 INFO L137 Inliner]: procedures = 69, calls = 79, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 903 [2022-02-20 19:54:37,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 19:54:37,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 19:54:37,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 19:54:37,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 19:54:37,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 19:54:37,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 19:54:37,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 19:54:37,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 19:54:37,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (1/1) ... [2022-02-20 19:54:37,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 19:54:37,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 19:54:37,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 19:54:37,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 19:54:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 19:54:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-02-20 19:54:37,564 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-02-20 19:54:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-02-20 19:54:37,564 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-02-20 19:54:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-02-20 19:54:37,564 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-02-20 19:54:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-02-20 19:54:37,564 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-02-20 19:54:37,564 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-02-20 19:54:37,565 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-02-20 19:54:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-02-20 19:54:37,565 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-02-20 19:54:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 19:54:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-02-20 19:54:37,565 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-02-20 19:54:37,565 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-02-20 19:54:37,565 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-02-20 19:54:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 19:54:37,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 19:54:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-02-20 19:54:37,573 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-02-20 19:54:37,695 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 19:54:37,697 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 19:54:38,487 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 19:54:38,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 19:54:38,499 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-02-20 19:54:38,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:38 BoogieIcfgContainer [2022-02-20 19:54:38,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 19:54:38,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 19:54:38,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 19:54:38,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 19:54:38,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 07:54:36" (1/3) ... [2022-02-20 19:54:38,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356236ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:38, skipping insertion in model container [2022-02-20 19:54:38,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 07:54:37" (2/3) ... [2022-02-20 19:54:38,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356236ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 07:54:38, skipping insertion in model container [2022-02-20 19:54:38,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 07:54:38" (3/3) ... [2022-02-20 19:54:38,520 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1+token_ring.10.cil-2.c [2022-02-20 19:54:38,524 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 19:54:38,524 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-02-20 19:54:38,562 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 19:54:38,567 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 19:54:38,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-02-20 19:54:38,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 405 states, 362 states have (on average 1.6408839779005524) internal successors, (594), 368 states have internal predecessors, (594), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-02-20 19:54:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:38,597 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:38,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:54:38,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:38,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2061722618, now seen corresponding path program 1 times [2022-02-20 19:54:38,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:54:38,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990629003] [2022-02-20 19:54:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:38,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:54:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:54:38,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 19:54:38,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 19:54:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:54:38,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2022-02-20 19:54:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 19:54:38,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 19:54:38,840 INFO L290 TraceCheckUtils]: 0: Hoare triple {408#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(19bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32);~q_buf_0~0 := 0bv32;~q_free~0 := 0bv32;~q_read_ev~0 := 0bv32;~q_write_ev~0 := 0bv32;~p_num_write~0 := 0bv32;~p_last_write~0 := 0bv32;~p_dw_st~0 := 0bv32;~p_dw_pc~0 := 0bv32;~p_dw_i~0 := 0bv32;~c_num_read~0 := 0bv32;~c_last_read~0 := 0bv32;~c_dr_st~0 := 0bv32;~c_dr_pc~0 := 0bv32;~c_dr_i~0 := 0bv32;~a_t~0 := 0bv32;~m_pc~0 := 0bv32;~t1_pc~0 := 0bv32;~t2_pc~0 := 0bv32;~t3_pc~0 := 0bv32;~t4_pc~0 := 0bv32;~t5_pc~0 := 0bv32;~t6_pc~0 := 0bv32;~t7_pc~0 := 0bv32;~t8_pc~0 := 0bv32;~t9_pc~0 := 0bv32;~t10_pc~0 := 0bv32;~m_st~0 := 0bv32;~t1_st~0 := 0bv32;~t2_st~0 := 0bv32;~t3_st~0 := 0bv32;~t4_st~0 := 0bv32;~t5_st~0 := 0bv32;~t6_st~0 := 0bv32;~t7_st~0 := 0bv32;~t8_st~0 := 0bv32;~t9_st~0 := 0bv32;~t10_st~0 := 0bv32;~m_i~0 := 0bv32;~t1_i~0 := 0bv32;~t2_i~0 := 0bv32;~t3_i~0 := 0bv32;~t4_i~0 := 0bv32;~t5_i~0 := 0bv32;~t6_i~0 := 0bv32;~t7_i~0 := 0bv32;~t8_i~0 := 0bv32;~t9_i~0 := 0bv32;~t10_i~0 := 0bv32;~M_E~0 := 2bv32;~T1_E~0 := 2bv32;~T2_E~0 := 2bv32;~T3_E~0 := 2bv32;~T4_E~0 := 2bv32;~T5_E~0 := 2bv32;~T6_E~0 := 2bv32;~T7_E~0 := 2bv32;~T8_E~0 := 2bv32;~T9_E~0 := 2bv32;~T10_E~0 := 2bv32;~E_M~0 := 2bv32;~E_1~0 := 2bv32;~E_2~0 := 2bv32;~E_3~0 := 2bv32;~E_4~0 := 2bv32;~E_5~0 := 2bv32;~E_6~0 := 2bv32;~E_7~0 := 2bv32;~E_8~0 := 2bv32;~E_9~0 := 2bv32;~E_10~0 := 2bv32;~token~0 := 0bv32;~local~0 := 0bv32; {408#true} is VALID [2022-02-20 19:54:38,841 INFO L290 TraceCheckUtils]: 1: Hoare triple {408#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet44#1, main_#t~ret45#1, main_#t~ret46#1; {408#true} is VALID [2022-02-20 19:54:38,842 INFO L290 TraceCheckUtils]: 2: Hoare triple {408#true} assume 0bv32 != main_#t~nondet44#1;havoc main_#t~nondet44#1;assume { :begin_inline_main1 } true;havoc main1_#res#1;havoc main1_~__retres1~3#1;havoc main1_~__retres1~3#1;assume { :begin_inline_init_model1 } true;~q_free~0 := 1bv32;~q_write_ev~0 := 2bv32;~q_read_ev~0 := ~q_write_ev~0;~p_num_write~0 := 0bv32;~p_dw_pc~0 := 0bv32;~p_dw_i~0 := 1bv32;~c_num_read~0 := 0bv32;~c_dr_pc~0 := 0bv32;~c_dr_i~0 := 1bv32; {419#(= ~p_dw_i~0 (_ bv1 32))} is VALID [2022-02-20 19:54:38,843 INFO L290 TraceCheckUtils]: 3: Hoare triple {419#(= ~p_dw_i~0 (_ bv1 32))} assume { :end_inline_init_model1 } true;assume { :begin_inline_start_simulation1 } true;havoc start_simulation1_#t~ret12#1, start_simulation1_~kernel_st~0#1, start_simulation1_~tmp~3#1;havoc start_simulation1_~kernel_st~0#1;havoc start_simulation1_~tmp~3#1;start_simulation1_~kernel_st~0#1 := 0bv32;assume { :begin_inline_init_threads1 } true; {419#(= ~p_dw_i~0 (_ bv1 32))} is VALID [2022-02-20 19:54:38,843 INFO L290 TraceCheckUtils]: 4: Hoare triple {419#(= ~p_dw_i~0 (_ bv1 32))} assume !(1bv32 == ~p_dw_i~0);~p_dw_st~0 := 2bv32; {409#false} is VALID [2022-02-20 19:54:38,844 INFO L290 TraceCheckUtils]: 5: Hoare triple {409#false} assume 1bv32 == ~c_dr_i~0;~c_dr_st~0 := 0bv32; {409#false} is VALID [2022-02-20 19:54:38,844 INFO L290 TraceCheckUtils]: 6: Hoare triple {409#false} assume { :end_inline_init_threads1 } true; {409#false} is VALID [2022-02-20 19:54:38,844 INFO L290 TraceCheckUtils]: 7: Hoare triple {409#false} assume !false; {409#false} is VALID [2022-02-20 19:54:38,844 INFO L290 TraceCheckUtils]: 8: Hoare triple {409#false} start_simulation1_~kernel_st~0#1 := 1bv32;assume { :begin_inline_eval1 } true;havoc eval1_#t~ret8#1, eval1_#t~nondet9#1, eval1_#t~nondet10#1, eval1_~tmp~1#1, eval1_~tmp___0~1#1, eval1_~tmp___1~0#1;havoc eval1_~tmp~1#1;havoc eval1_~tmp___0~1#1;havoc eval1_~tmp___1~0#1; {409#false} is VALID [2022-02-20 19:54:38,845 INFO L290 TraceCheckUtils]: 9: Hoare triple {409#false} assume !false; {409#false} is VALID [2022-02-20 19:54:38,845 INFO L272 TraceCheckUtils]: 10: Hoare triple {409#false} call eval1_#t~ret8#1 := exists_runnable_thread1(); {409#false} is VALID [2022-02-20 19:54:38,845 INFO L290 TraceCheckUtils]: 11: Hoare triple {409#false} havoc ~__retres1~2; {409#false} is VALID [2022-02-20 19:54:38,845 INFO L290 TraceCheckUtils]: 12: Hoare triple {409#false} assume 0bv32 == ~p_dw_st~0;~__retres1~2 := 1bv32; {409#false} is VALID [2022-02-20 19:54:38,845 INFO L290 TraceCheckUtils]: 13: Hoare triple {409#false} #res := ~__retres1~2; {409#false} is VALID [2022-02-20 19:54:38,846 INFO L290 TraceCheckUtils]: 14: Hoare triple {409#false} assume true; {409#false} is VALID [2022-02-20 19:54:38,846 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {409#false} {409#false} #1599#return; {409#false} is VALID [2022-02-20 19:54:38,846 INFO L290 TraceCheckUtils]: 16: Hoare triple {409#false} eval1_~tmp___1~0#1 := eval1_#t~ret8#1;havoc eval1_#t~ret8#1; {409#false} is VALID [2022-02-20 19:54:38,847 INFO L290 TraceCheckUtils]: 17: Hoare triple {409#false} assume 0bv32 != eval1_~tmp___1~0#1; {409#false} is VALID [2022-02-20 19:54:38,848 INFO L290 TraceCheckUtils]: 18: Hoare triple {409#false} assume 0bv32 == ~p_dw_st~0;eval1_~tmp~1#1 := eval1_#t~nondet9#1;havoc eval1_#t~nondet9#1; {409#false} is VALID [2022-02-20 19:54:38,848 INFO L290 TraceCheckUtils]: 19: Hoare triple {409#false} assume !(0bv32 != eval1_~tmp~1#1); {409#false} is VALID [2022-02-20 19:54:38,848 INFO L272 TraceCheckUtils]: 20: Hoare triple {409#false} call error1(); {409#false} is VALID [2022-02-20 19:54:38,848 INFO L290 TraceCheckUtils]: 21: Hoare triple {409#false} assume !false; {409#false} is VALID [2022-02-20 19:54:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 19:54:38,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 19:54:38,850 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 19:54:38,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990629003] [2022-02-20 19:54:38,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990629003] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 19:54:38,851 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 19:54:38,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-20 19:54:38,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624949984] [2022-02-20 19:54:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 19:54:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-20 19:54:38,861 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 19:54:38,864 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:38,891 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:54:38,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-20 19:54:38,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 19:54:38,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-20 19:54:38,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:54:38,923 INFO L87 Difference]: Start difference. First operand has 405 states, 362 states have (on average 1.6408839779005524) internal successors, (594), 368 states have internal predecessors, (594), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:39,752 INFO L93 Difference]: Finished difference Result 787 states and 1272 transitions. [2022-02-20 19:54:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-20 19:54:39,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-02-20 19:54:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 19:54:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1272 transitions. [2022-02-20 19:54:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1272 transitions. [2022-02-20 19:54:39,806 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 1272 transitions. [2022-02-20 19:54:40,889 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 1272 edges. 1272 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 19:54:40,934 INFO L225 Difference]: With dead ends: 787 [2022-02-20 19:54:40,935 INFO L226 Difference]: Without dead ends: 395 [2022-02-20 19:54:40,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-20 19:54:40,942 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 95 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 19:54:40,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1131 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 19:54:40,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-02-20 19:54:40,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2022-02-20 19:54:40,998 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 19:54:41,001 INFO L82 GeneralOperation]: Start isEquivalent. First operand 395 states. Second operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:41,003 INFO L74 IsIncluded]: Start isIncluded. First operand 395 states. Second operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:41,004 INFO L87 Difference]: Start difference. First operand 395 states. Second operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:41,023 INFO L93 Difference]: Finished difference Result 395 states and 606 transitions. [2022-02-20 19:54:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 606 transitions. [2022-02-20 19:54:41,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:54:41,028 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:54:41,029 INFO L74 IsIncluded]: Start isIncluded. First operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand 395 states. [2022-02-20 19:54:41,031 INFO L87 Difference]: Start difference. First operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand 395 states. [2022-02-20 19:54:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 19:54:41,048 INFO L93 Difference]: Finished difference Result 395 states and 606 transitions. [2022-02-20 19:54:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 606 transitions. [2022-02-20 19:54:41,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 19:54:41,050 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 19:54:41,051 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 19:54:41,051 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 19:54:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 358 states have internal predecessors, (547), 31 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-02-20 19:54:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 606 transitions. [2022-02-20 19:54:41,072 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 606 transitions. Word has length 22 [2022-02-20 19:54:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 19:54:41,073 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 606 transitions. [2022-02-20 19:54:41,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 19:54:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 606 transitions. [2022-02-20 19:54:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-20 19:54:41,074 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 19:54:41,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 19:54:41,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-02-20 19:54:41,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 19:54:41,287 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 19:54:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 19:54:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash -239099972, now seen corresponding path program 1 times [2022-02-20 19:54:41,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 19:54:41,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71924150] [2022-02-20 19:54:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 19:54:41,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 19:54:41,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 19:54:41,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 19:54:41,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 19:54:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:41,380 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 19:54:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 19:54:41,523 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 19:54:41,524 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 19:54:41,525 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-02-20 19:54:41,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-02-20 19:54:41,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-02-20 19:54:41,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 19:54:41,729 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 19:54:41,732 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 19:54:41,792 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call #t~ret8 := exists_runnable_thread1(); [2022-02-20 19:54:41,793 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 19:54:41,796 INFO L158 Benchmark]: Toolchain (without parser) took 4889.73ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 30.4MB in the beginning and 58.8MB in the end (delta: -28.3MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:41,796 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.5MB in the beginning and 36.4MB in the end (delta: 46.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 19:54:41,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.57ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.1MB in the beginning and 42.9MB in the end (delta: -12.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-02-20 19:54:41,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.27ms. Allocated memory is still 67.1MB. Free memory was 42.9MB in the beginning and 37.6MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 19:54:41,797 INFO L158 Benchmark]: Boogie Preprocessor took 70.01ms. Allocated memory is still 67.1MB. Free memory was 37.6MB in the beginning and 33.0MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-02-20 19:54:41,798 INFO L158 Benchmark]: RCFGBuilder took 1003.68ms. Allocated memory is still 67.1MB. Free memory was 33.0MB in the beginning and 25.3MB in the end (delta: 7.6MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2022-02-20 19:54:41,798 INFO L158 Benchmark]: TraceAbstraction took 3292.06ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 25.0MB in the beginning and 58.8MB in the end (delta: -33.8MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-02-20 19:54:41,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 36.5MB in the beginning and 36.4MB in the end (delta: 46.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.57ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.1MB in the beginning and 42.9MB in the end (delta: -12.7MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.27ms. Allocated memory is still 67.1MB. Free memory was 42.9MB in the beginning and 37.6MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.01ms. Allocated memory is still 67.1MB. Free memory was 37.6MB in the beginning and 33.0MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1003.68ms. Allocated memory is still 67.1MB. Free memory was 33.0MB in the beginning and 25.3MB in the end (delta: 7.6MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3292.06ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 25.0MB in the beginning and 58.8MB in the end (delta: -33.8MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 19:54:41,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator