./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.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 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:13:05,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:13:05,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:13:06,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:13:06,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:13:06,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:13:06,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:13:06,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:13:06,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:13:06,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:13:06,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:13:06,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:13:06,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:13:06,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:13:06,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:13:06,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:13:06,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:13:06,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:13:06,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:13:06,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:13:06,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:13:06,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:13:06,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:13:06,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:13:06,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:13:06,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:13:06,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:13:06,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:13:06,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:13:06,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:13:06,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:13:06,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:13:06,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:13:06,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:13:06,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:13:06,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:13:06,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:13:06,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:13:06,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:13:06,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:13:06,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:13:06,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:13:06,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:13:06,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:13:06,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:13:06,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:13:06,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:13:06,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:13:06,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:13:06,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:13:06,085 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:13:06,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:13:06,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:13:06,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:13:06,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:13:06,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:13:06,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:13:06,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:13:06,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:13:06,086 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:13:06,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:13:06,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:13:06,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:13:06,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:13:06,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:13:06,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:13:06,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:13:06,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:13:06,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:13:06,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:13:06,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:13:06,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:13:06,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:13:06,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:13:06,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:13:06,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:13:06,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f [2021-12-15 11:13:06,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:13:06,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:13:06,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:13:06,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:13:06,307 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:13:06,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-12-15 11:13:06,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94118488d/cd0566696ab2490798acfa960a806c72/FLAG44f784cde [2021-12-15 11:13:06,718 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:13:06,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-12-15 11:13:06,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94118488d/cd0566696ab2490798acfa960a806c72/FLAG44f784cde [2021-12-15 11:13:06,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94118488d/cd0566696ab2490798acfa960a806c72 [2021-12-15 11:13:06,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:13:06,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:13:06,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:13:06,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:13:06,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:13:06,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:13:06" (1/1) ... [2021-12-15 11:13:06,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207725fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:06, skipping insertion in model container [2021-12-15 11:13:06,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:13:06" (1/1) ... [2021-12-15 11:13:06,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:13:06,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:13:07,037 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-12-15 11:13:07,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:13:07,053 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:13:07,116 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-12-15 11:13:07,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:13:07,125 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:13:07,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07 WrapperNode [2021-12-15 11:13:07,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:13:07,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:13:07,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:13:07,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:13:07,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,179 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 535 [2021-12-15 11:13:07,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:13:07,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:13:07,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:13:07,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:13:07,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:13:07,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:13:07,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:13:07,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:13:07,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (1/1) ... [2021-12-15 11:13:07,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:13:07,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:13:07,248 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) [2021-12-15 11:13:07,251 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 [2021-12-15 11:13:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2021-12-15 11:13:07,272 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2021-12-15 11:13:07,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:13:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2021-12-15 11:13:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2021-12-15 11:13:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-15 11:13:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-15 11:13:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2021-12-15 11:13:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2021-12-15 11:13:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 11:13:07,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 11:13:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:13:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2021-12-15 11:13:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2021-12-15 11:13:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:13:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:13:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2021-12-15 11:13:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2021-12-15 11:13:07,390 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:13:07,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:13:07,836 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:13:07,844 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:13:07,844 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:13:07,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:13:07 BoogieIcfgContainer [2021-12-15 11:13:07,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:13:07,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:13:07,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:13:07,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:13:07,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:13:06" (1/3) ... [2021-12-15 11:13:07,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74152e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:13:07, skipping insertion in model container [2021-12-15 11:13:07,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:07" (2/3) ... [2021-12-15 11:13:07,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74152e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:13:07, skipping insertion in model container [2021-12-15 11:13:07,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:13:07" (3/3) ... [2021-12-15 11:13:07,853 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-12-15 11:13:07,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:13:07,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:13:07,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:13:07,894 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 [2021-12-15 11:13:07,894 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:13:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 166 states have (on average 1.5542168674698795) internal successors, (258), 168 states have internal predecessors, (258), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-15 11:13:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 11:13:07,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:13:07,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:13:07,924 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:13:07,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:13:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1527920627, now seen corresponding path program 1 times [2021-12-15 11:13:07,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:13:07,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492184298] [2021-12-15 11:13:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:13:07,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:13:07,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:13:07,973 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 11:13:07,978 INFO L158 Benchmark]: Toolchain (without parser) took 1216.79ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 62.9MB in the beginning and 71.0MB in the end (delta: -8.1MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2021-12-15 11:13:07,978 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory was 51.5MB in the beginning and 51.4MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:13:07,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.99ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 62.3MB in the end (delta: 345.6kB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-12-15 11:13:07,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.82ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 59.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 11:13:07,980 INFO L158 Benchmark]: Boogie Preprocessor took 38.84ms. Allocated memory is still 92.3MB. Free memory was 59.1MB in the beginning and 56.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:13:07,980 INFO L158 Benchmark]: RCFGBuilder took 626.33ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 56.3MB in the beginning and 81.5MB in the end (delta: -25.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-15 11:13:07,980 INFO L158 Benchmark]: TraceAbstraction took 127.79ms. Allocated memory is still 121.6MB. Free memory was 81.5MB in the beginning and 71.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:13:07,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory was 51.5MB in the beginning and 51.4MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.99ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 62.3MB in the end (delta: 345.6kB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.82ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 59.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.84ms. Allocated memory is still 92.3MB. Free memory was 59.1MB in the beginning and 56.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 626.33ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 56.3MB in the beginning and 81.5MB in the end (delta: -25.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 127.79ms. Allocated memory is still 121.6MB. Free memory was 81.5MB in the beginning and 71.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:13:08,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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 -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/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.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 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:13:09,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:13:09,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:13:09,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:13:09,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:13:09,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:13:09,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:13:09,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:13:09,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:13:09,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:13:09,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:13:09,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:13:09,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:13:09,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:13:09,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:13:09,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:13:09,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:13:09,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:13:09,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:13:09,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:13:09,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:13:09,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:13:09,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:13:09,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:13:09,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:13:09,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:13:09,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:13:09,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:13:09,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:13:09,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:13:09,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:13:09,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:13:09,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:13:09,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:13:09,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:13:09,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:13:09,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:13:09,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:13:09,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:13:09,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:13:09,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:13:09,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:13:09,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:13:09,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:13:09,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:13:09,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:13:09,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:13:09,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:13:09,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:13:09,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:13:09,807 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:13:09,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:13:09,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:13:09,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:13:09,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:13:09,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:13:09,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:13:09,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:13:09,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:13:09,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:13:09,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:13:09,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:13:09,810 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:13:09,810 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:13:09,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:13:09,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:13:09,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:13:09,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:13:09,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:13:09,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f [2021-12-15 11:13:10,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:13:10,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:13:10,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:13:10,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:13:10,120 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:13:10,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-12-15 11:13:10,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0fffd48/b08de78db793446baa8fce044f50be8e/FLAGf26df82af [2021-12-15 11:13:10,556 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:13:10,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-12-15 11:13:10,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0fffd48/b08de78db793446baa8fce044f50be8e/FLAGf26df82af [2021-12-15 11:13:10,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0fffd48/b08de78db793446baa8fce044f50be8e [2021-12-15 11:13:10,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:13:10,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:13:10,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:13:10,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:13:10,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:13:10,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:13:10" (1/1) ... [2021-12-15 11:13:10,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420713b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:10, skipping insertion in model container [2021-12-15 11:13:10,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:13:10" (1/1) ... [2021-12-15 11:13:10,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:13:10,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:13:11,214 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-12-15 11:13:11,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:13:11,224 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:13:11,295 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/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2021-12-15 11:13:11,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:13:11,315 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:13:11,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11 WrapperNode [2021-12-15 11:13:11,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:13:11,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:13:11,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:13:11,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:13:11,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,372 INFO L137 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 514 [2021-12-15 11:13:11,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:13:11,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:13:11,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:13:11,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:13:11,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:13:11,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:13:11,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:13:11,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:13:11,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (1/1) ... [2021-12-15 11:13:11,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:13:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:13:11,453 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) [2021-12-15 11:13:11,475 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 [2021-12-15 11:13:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2021-12-15 11:13:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2021-12-15 11:13:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:13:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:13:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2021-12-15 11:13:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2021-12-15 11:13:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-15 11:13:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-15 11:13:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2021-12-15 11:13:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2021-12-15 11:13:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 11:13:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 11:13:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2021-12-15 11:13:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2021-12-15 11:13:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:13:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:13:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2021-12-15 11:13:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2021-12-15 11:13:11,614 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:13:11,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:13:11,989 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:13:11,996 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:13:11,996 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:13:11,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:13:11 BoogieIcfgContainer [2021-12-15 11:13:11,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:13:11,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:13:11,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:13:12,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:13:12,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:13:10" (1/3) ... [2021-12-15 11:13:12,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fe381f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:13:12, skipping insertion in model container [2021-12-15 11:13:12,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:13:11" (2/3) ... [2021-12-15 11:13:12,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fe381f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:13:12, skipping insertion in model container [2021-12-15 11:13:12,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:13:11" (3/3) ... [2021-12-15 11:13:12,003 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2021-12-15 11:13:12,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:13:12,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:13:12,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:13:12,045 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 [2021-12-15 11:13:12,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:13:12,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 166 states have (on average 1.5542168674698795) internal successors, (258), 168 states have internal predecessors, (258), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-15 11:13:12,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 11:13:12,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:13:12,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:13:12,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:13:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:13:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1527920627, now seen corresponding path program 1 times [2021-12-15 11:13:12,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:13:12,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622648011] [2021-12-15 11:13:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:13:12,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:13:12,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:13:12,091 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) [2021-12-15 11:13:12,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:13:12,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 11:13:12,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:13:12,358 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) 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) [2021-12-15 11:13:12,361 INFO L158 Benchmark]: Toolchain (without parser) took 1409.69ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.7MB in the beginning and 35.8MB in the end (delta: -7.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-12-15 11:13:12,363 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:13:12,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.64ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.6MB in the beginning and 44.7MB in the end (delta: -16.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-12-15 11:13:12,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.38ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 41.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:13:12,365 INFO L158 Benchmark]: Boogie Preprocessor took 46.79ms. Allocated memory is still 69.2MB. Free memory was 41.6MB in the beginning and 38.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 11:13:12,366 INFO L158 Benchmark]: RCFGBuilder took 577.43ms. Allocated memory is still 69.2MB. Free memory was 38.8MB in the beginning and 46.1MB in the end (delta: -7.2MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-12-15 11:13:12,370 INFO L158 Benchmark]: TraceAbstraction took 360.96ms. Allocated memory is still 69.2MB. Free memory was 45.8MB in the beginning and 35.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 11:13:12,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.64ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.6MB in the beginning and 44.7MB in the end (delta: -16.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.38ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 41.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.79ms. Allocated memory is still 69.2MB. Free memory was 41.6MB in the beginning and 38.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 577.43ms. Allocated memory is still 69.2MB. Free memory was 38.8MB in the beginning and 46.1MB in the end (delta: -7.2MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 360.96ms. Allocated memory is still 69.2MB. Free memory was 45.8MB in the beginning and 35.8MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:13:12,401 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: UnsupportedOperationException: Set is immutable