./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi005.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/pthread-wmm/rfi005.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f51f8e84e29dbf7268818c0bd5364f23c52e80cf2778700bc9afe3da3c44b42 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 09:53:32,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:53:32,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:53:32,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:53:32,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:53:32,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:53:32,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:53:32,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:53:32,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:53:32,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:53:32,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:53:32,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:53:32,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:53:32,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:53:32,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:53:32,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:53:32,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:53:32,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:53:32,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:53:32,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:53:32,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:53:32,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:53:32,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:53:32,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:53:32,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:53:32,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:53:32,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:53:32,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:53:32,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:53:32,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:53:32,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:53:32,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:53:32,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:53:32,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:53:32,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:53:32,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:53:32,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:53:32,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:53:32,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:53:32,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:53:32,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:53:32,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:53:32,677 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:53:32,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:53:32,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:53:32,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:53:32,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:53:32,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:53:32,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:53:32,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:53:32,681 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:53:32,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:53:32,682 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:53:32,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:53:32,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:53:32,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:53:32,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:53:32,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:53:32,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:53:32,683 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:53:32,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:53:32,683 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:53:32,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:53:32,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:53:32,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:53:32,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:53:32,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:53:32,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:53:32,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:53:32,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:53:32,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:53:32,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:53:32,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:53:32,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:53:32,686 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:53:32,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:53:32,687 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:53:32,687 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f51f8e84e29dbf7268818c0bd5364f23c52e80cf2778700bc9afe3da3c44b42 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:53:32,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:53:33,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:53:33,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:53:33,030 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:53:33,031 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:53:33,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi005.i [2023-09-01 09:53:34,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:53:34,594 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:53:34,594 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi005.i [2023-09-01 09:53:34,609 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6fcb9898/17cc9700205f498a9c680911b1af88d2/FLAG7b030ed24 [2023-09-01 09:53:34,623 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6fcb9898/17cc9700205f498a9c680911b1af88d2 [2023-09-01 09:53:34,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:53:34,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:53:34,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:53:34,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:53:34,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:53:34,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:53:34" (1/1) ... [2023-09-01 09:53:34,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb0bcf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:34, skipping insertion in model container [2023-09-01 09:53:34,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:53:34" (1/1) ... [2023-09-01 09:53:34,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:53:34,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:53:34,896 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi005.i[983,996] [2023-09-01 09:53:35,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:53:35,152 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:53:35,170 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi005.i[983,996] [2023-09-01 09:53:35,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:53:35,279 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:53:35,279 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:53:35,285 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:53:35,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35 WrapperNode [2023-09-01 09:53:35,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:53:35,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:53:35,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:53:35,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:53:35,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,362 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2023-09-01 09:53:35,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:53:35,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:53:35,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:53:35,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:53:35,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,392 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:53:35,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:53:35,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:53:35,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:53:35,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (1/1) ... [2023-09-01 09:53:35,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:53:35,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:53:35,443 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) [2023-09-01 09:53:35,477 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 [2023-09-01 09:53:35,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:53:35,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:53:35,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:53:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:53:35,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:53:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-09-01 09:53:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-09-01 09:53:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-09-01 09:53:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-09-01 09:53:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:53:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:53:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:53:35,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:53:35,497 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:53:35,634 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:53:35,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:53:36,066 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:53:36,306 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:53:36,307 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:53:36,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:36 BoogieIcfgContainer [2023-09-01 09:53:36,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:53:36,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:53:36,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:53:36,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:53:36,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:53:34" (1/3) ... [2023-09-01 09:53:36,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8e75ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:53:36, skipping insertion in model container [2023-09-01 09:53:36,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:53:35" (2/3) ... [2023-09-01 09:53:36,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8e75ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:53:36, skipping insertion in model container [2023-09-01 09:53:36,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:36" (3/3) ... [2023-09-01 09:53:36,319 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi005.i [2023-09-01 09:53:36,328 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:53:36,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:53:36,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-09-01 09:53:36,338 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:53:36,394 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:53:36,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 91 transitions, 192 flow [2023-09-01 09:53:36,515 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-09-01 09:53:36,515 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:36,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-09-01 09:53:36,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 91 transitions, 192 flow [2023-09-01 09:53:36,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 89 transitions, 184 flow [2023-09-01 09:53:36,530 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:53:36,548 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 89 transitions, 184 flow [2023-09-01 09:53:36,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 89 transitions, 184 flow [2023-09-01 09:53:36,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 89 transitions, 184 flow [2023-09-01 09:53:36,588 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-09-01 09:53:36,589 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:36,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-09-01 09:53:36,591 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2023-09-01 09:53:40,338 INFO L134 LiptonReduction]: Checked pairs total: 2945 [2023-09-01 09:53:40,338 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-09-01 09:53:40,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:53:40,366 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e3027a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:53:40,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-09-01 09:53:40,370 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-09-01 09:53:40,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:53:40,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:40,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 09:53:40,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:40,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:40,378 INFO L85 PathProgramCache]: Analyzing trace with hash 488886995, now seen corresponding path program 1 times [2023-09-01 09:53:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:40,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900343226] [2023-09-01 09:53:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:53:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:53:40,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:53:40,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900343226] [2023-09-01 09:53:40,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900343226] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:53:40,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:53:40,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 09:53:40,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319285470] [2023-09-01 09:53:40,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:53:40,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:53:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:53:40,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:53:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:53:40,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 175 [2023-09-01 09:53:40,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:40,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:53:40,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 175 [2023-09-01 09:53:40,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:53:41,001 INFO L130 PetriNetUnfolder]: 204/373 cut-off events. [2023-09-01 09:53:41,002 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 09:53:41,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 373 events. 204/373 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1466 event pairs, 18 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 730. Up to 307 conditions per place. [2023-09-01 09:53:41,008 INFO L137 encePairwiseOnDemand]: 172/175 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-09-01 09:53:41,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 104 flow [2023-09-01 09:53:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:53:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:53:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-09-01 09:53:41,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819047619047619 [2023-09-01 09:53:41,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-09-01 09:53:41,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-09-01 09:53:41,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:53:41,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-09-01 09:53:41,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:41,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:41,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:41,044 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 253 transitions. [2023-09-01 09:53:41,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 104 flow [2023-09-01 09:53:41,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:53:41,048 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 44 flow [2023-09-01 09:53:41,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-09-01 09:53:41,054 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-09-01 09:53:41,054 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 44 flow [2023-09-01 09:53:41,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:53:41,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:53:41,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 09:53:41,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:53:41,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-09-01 09:53:41,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:53:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2024371918, now seen corresponding path program 1 times [2023-09-01 09:53:41,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:53:41,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252729745] [2023-09-01 09:53:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:53:41,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:53:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 09:53:41,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 09:53:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 09:53:41,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 09:53:41,140 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 09:53:41,142 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-09-01 09:53:41,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-09-01 09:53:41,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-09-01 09:53:41,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-09-01 09:53:41,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-09-01 09:53:41,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-09-01 09:53:41,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-09-01 09:53:41,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:53:41,147 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-09-01 09:53:41,155 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:53:41,155 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:53:41,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:53:41 BasicIcfg [2023-09-01 09:53:41,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:53:41,194 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:53:41,194 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:53:41,194 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:53:41,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:53:36" (3/4) ... [2023-09-01 09:53:41,196 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 09:53:41,237 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:53:41,237 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:53:41,238 INFO L158 Benchmark]: Toolchain (without parser) took 6611.49ms. Allocated memory was 60.8MB in the beginning and 107.0MB in the end (delta: 46.1MB). Free memory was 26.9MB in the beginning and 69.0MB in the end (delta: -42.1MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,238 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 50.3MB. Free memory was 28.6MB in the beginning and 28.6MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:53:41,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 658.99ms. Allocated memory is still 60.8MB. Free memory was 26.7MB in the beginning and 30.3MB in the end (delta: -3.6MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.57ms. Allocated memory is still 60.8MB. Free memory was 30.1MB in the beginning and 27.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,239 INFO L158 Benchmark]: Boogie Preprocessor took 41.29ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 27.2MB in the beginning and 51.8MB in the end (delta: -24.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,239 INFO L158 Benchmark]: RCFGBuilder took 903.69ms. Allocated memory is still 73.4MB. Free memory was 51.8MB in the beginning and 42.6MB in the end (delta: 9.2MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,240 INFO L158 Benchmark]: TraceAbstraction took 4881.92ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 41.8MB in the beginning and 72.3MB in the end (delta: -30.5MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,240 INFO L158 Benchmark]: Witness Printer took 43.35ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 69.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 09:53:41,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 50.3MB. Free memory was 28.6MB in the beginning and 28.6MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 658.99ms. Allocated memory is still 60.8MB. Free memory was 26.7MB in the beginning and 30.3MB in the end (delta: -3.6MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.57ms. Allocated memory is still 60.8MB. Free memory was 30.1MB in the beginning and 27.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.29ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 27.2MB in the beginning and 51.8MB in the end (delta: -24.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * RCFGBuilder took 903.69ms. Allocated memory is still 73.4MB. Free memory was 51.8MB in the beginning and 42.6MB in the end (delta: 9.2MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4881.92ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 41.8MB in the beginning and 72.3MB in the end (delta: -30.5MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Witness Printer took 43.35ms. Allocated memory is still 107.0MB. Free memory was 72.3MB in the beginning and 69.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 94 PlacesBefore, 26 PlacesAfterwards, 89 TransitionsBefore, 19 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 84 TotalNumberOfCompositions, 2945 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1404, independent: 1264, independent conditional: 0, independent unconditional: 1264, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 625, independent: 586, independent conditional: 0, independent unconditional: 586, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1404, independent: 678, independent conditional: 0, independent unconditional: 678, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 625, unknown conditional: 0, unknown unconditional: 625] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L722] 0 _Bool y$flush_delayed; [L723] 0 int y$mem_tmp; [L724] 0 _Bool y$r_buff0_thd0; [L725] 0 _Bool y$r_buff0_thd1; [L726] 0 _Bool y$r_buff0_thd2; [L727] 0 _Bool y$r_buff1_thd0; [L728] 0 _Bool y$r_buff1_thd1; [L729] 0 _Bool y$r_buff1_thd2; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1665; [L835] FCALL, FORK 0 pthread_create(&t1665, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1665, ((void *)0), P0, ((void *)0))=-2, t1665={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L836] 0 pthread_t t1666; [L837] FCALL, FORK 0 pthread_create(&t1666, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1666, ((void *)0), P1, ((void *)0))=-1, t1665={5:0}, t1666={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L771] 2 y$w_buff1 = y$w_buff0 [L772] 2 y$w_buff0 = 1 [L773] 2 y$w_buff1_used = y$w_buff0_used [L774] 2 y$w_buff0_used = (_Bool)1 [L775] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L775] RET 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L776] 2 y$r_buff1_thd0 = y$r_buff0_thd0 [L777] 2 y$r_buff1_thd1 = y$r_buff0_thd1 [L778] 2 y$r_buff1_thd2 = y$r_buff0_thd2 [L779] 2 y$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L782] 2 y$w_buff1 = y$w_buff0 [L783] 2 y$w_buff0 = 2 [L784] 2 y$w_buff1_used = y$w_buff0_used [L785] 2 y$w_buff0_used = (_Bool)1 [L786] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND TRUE 2 !expression [L19] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=1, y$w_buff1_used=1, y=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 835]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 837]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-09-01 09:53:41,263 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE