./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe032_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe032_tso.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 ffff09405c16ea86880fae0b9b6268edfa5ef4b2d03cee31a9e4f2e1ac044811 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:50:29,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:50:29,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:50:29,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:50:29,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:50:29,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:50:29,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:50:29,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:50:29,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:50:29,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:50:29,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:50:29,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:50:29,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:50:29,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:50:29,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:50:29,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:50:29,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:50:29,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:50:29,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:50:29,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:50:29,566 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:50:29,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:50:29,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:50:29,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:50:29,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:50:29,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:50:29,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:50:29,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:50:29,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:50:29,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:50:29,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:50:29,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:50:29,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:50:29,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:50:29,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:50:29,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:50:29,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:50:29,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:50:29,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:50:29,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:50:29,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:50:29,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:50:29,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:50:29,597 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:50:29,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:50:29,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:50:29,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:50:29,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:50:29,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:50:29,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:50:29,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:50:29,600 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:50:29,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:50:29,601 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:50:29,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:50:29,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:50:29,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:50:29,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:50:29,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:50:29,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:50:29,602 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:50:29,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:50:29,607 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:50:29,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:50:29,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:50:29,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:50:29,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:50:29,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:29,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:50:29,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:50:29,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:50:29,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:50:29,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:50:29,609 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:50:29,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:50:29,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:50:29,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffff09405c16ea86880fae0b9b6268edfa5ef4b2d03cee31a9e4f2e1ac044811 [2022-07-13 21:50:29,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:50:29,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:50:29,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:50:29,852 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:50:29,852 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:50:29,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe032_tso.i [2022-07-13 21:50:29,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2550ea82e/61df5ef3826343dda2d7b7d4e12c7eec/FLAG6985a37ad [2022-07-13 21:50:30,335 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:50:30,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe032_tso.i [2022-07-13 21:50:30,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2550ea82e/61df5ef3826343dda2d7b7d4e12c7eec/FLAG6985a37ad [2022-07-13 21:50:30,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2550ea82e/61df5ef3826343dda2d7b7d4e12c7eec [2022-07-13 21:50:30,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:50:30,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:50:30,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:30,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:50:30,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:50:30,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff368c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30, skipping insertion in model container [2022-07-13 21:50:30,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:50:30,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:50:30,522 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/pthread-wmm/safe032_tso.i[945,958] [2022-07-13 21:50:30,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:30,635 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:50:30,644 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/pthread-wmm/safe032_tso.i[945,958] [2022-07-13 21:50:30,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:30,703 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:50:30,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30 WrapperNode [2022-07-13 21:50:30,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:30,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:30,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:50:30,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:50:30,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,753 INFO L137 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-07-13 21:50:30,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:30,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:50:30,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:50:30,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:50:30,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:50:30,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:50:30,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:50:30,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:50:30,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (1/1) ... [2022-07-13 21:50:30,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:30,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:50:30,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:50:30,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:50:30,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:50:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-13 21:50:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:50:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:50:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:50:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-13 21:50:30,850 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-13 21:50:30,850 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-13 21:50:30,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-13 21:50:30,851 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-13 21:50:30,851 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-13 21:50:30,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:50:30,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-13 21:50:30,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:50:30,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:50:30,853 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:50:30,985 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:50:30,987 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:50:31,106 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:50:31,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:50:31,111 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:50:31,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:31 BoogieIcfgContainer [2022-07-13 21:50:31,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:50:31,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:50:31,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:50:31,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:50:31,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:50:30" (1/3) ... [2022-07-13 21:50:31,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19570af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:31, skipping insertion in model container [2022-07-13 21:50:31,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:30" (2/3) ... [2022-07-13 21:50:31,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19570af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:31, skipping insertion in model container [2022-07-13 21:50:31,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:31" (3/3) ... [2022-07-13 21:50:31,118 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.i [2022-07-13 21:50:31,122 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:50:31,128 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:50:31,128 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:50:31,129 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:50:31,166 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:50:31,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2022-07-13 21:50:31,218 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2022-07-13 21:50:31,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:31,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-07-13 21:50:31,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2022-07-13 21:50:31,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2022-07-13 21:50:31,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:50:31,236 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3f695da8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33287c97 [2022-07-13 21:50:31,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 21:50:31,250 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2022-07-13 21:50:31,251 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:31,251 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:31,251 INFO L200 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:31,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:31,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:31,255 INFO L85 PathProgramCache]: Analyzing trace with hash -669780344, now seen corresponding path program 1 times [2022-07-13 21:50:31,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:31,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940509378] [2022-07-13 21:50:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:31,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:31,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:31,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940509378] [2022-07-13 21:50:31,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940509378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:31,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:31,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22219730] [2022-07-13 21:50:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:31,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:31,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:31,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:31,633 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2022-07-13 21:50:31,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-07-13 21:50:31,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:31,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2022-07-13 21:50:31,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:31,984 INFO L129 PetriNetUnfolder]: 344/796 cut-off events. [2022-07-13 21:50:31,985 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-07-13 21:50:31,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 796 events. 344/796 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4104 event pairs, 25 based on Foata normal form. 36/792 useless extension candidates. Maximal degree in co-relation 1364. Up to 102 conditions per place. [2022-07-13 21:50:31,993 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 27 selfloop transitions, 6 changer transitions 53/140 dead transitions. [2022-07-13 21:50:31,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 140 transitions, 467 flow [2022-07-13 21:50:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:50:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:50:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 976 transitions. [2022-07-13 21:50:32,012 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8250211327134404 [2022-07-13 21:50:32,013 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 976 transitions. [2022-07-13 21:50:32,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 976 transitions. [2022-07-13 21:50:32,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:32,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 976 transitions. [2022-07-13 21:50:32,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.07692307692308) internal successors, (976), 13 states have internal predecessors, (976), 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) [2022-07-13 21:50:32,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2022-07-13 21:50:32,032 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2022-07-13 21:50:32,034 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 976 transitions. [2022-07-13 21:50:32,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 140 transitions, 467 flow [2022-07-13 21:50:32,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 462 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 21:50:32,042 INFO L242 Difference]: Finished difference. Result has 104 places, 77 transitions, 238 flow [2022-07-13 21:50:32,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=238, PETRI_PLACES=104, PETRI_TRANSITIONS=77} [2022-07-13 21:50:32,048 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-07-13 21:50:32,048 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 77 transitions, 238 flow [2022-07-13 21:50:32,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 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) [2022-07-13 21:50:32,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:32,050 INFO L200 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:32,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:50:32,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:32,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash -213237848, now seen corresponding path program 1 times [2022-07-13 21:50:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:32,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316101829] [2022-07-13 21:50:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:32,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:32,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:32,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316101829] [2022-07-13 21:50:32,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316101829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:32,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:32,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:32,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839236222] [2022-07-13 21:50:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:32,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:32,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:32,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:32,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:32,187 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 91 [2022-07-13 21:50:32,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 77 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2022-07-13 21:50:32,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:32,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 91 [2022-07-13 21:50:32,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:32,328 INFO L129 PetriNetUnfolder]: 91/417 cut-off events. [2022-07-13 21:50:32,328 INFO L130 PetriNetUnfolder]: For 879/1163 co-relation queries the response was YES. [2022-07-13 21:50:32,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 417 events. 91/417 cut-off events. For 879/1163 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2278 event pairs, 34 based on Foata normal form. 23/413 useless extension candidates. Maximal degree in co-relation 1104. Up to 93 conditions per place. [2022-07-13 21:50:32,331 INFO L132 encePairwiseOnDemand]: 85/91 looper letters, 17 selfloop transitions, 3 changer transitions 26/107 dead transitions. [2022-07-13 21:50:32,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 107 transitions, 552 flow [2022-07-13 21:50:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 693 transitions. [2022-07-13 21:50:32,333 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2022-07-13 21:50:32,333 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 693 transitions. [2022-07-13 21:50:32,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 693 transitions. [2022-07-13 21:50:32,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:32,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 693 transitions. [2022-07-13 21:50:32,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.0) internal successors, (693), 9 states have internal predecessors, (693), 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) [2022-07-13 21:50:32,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2022-07-13 21:50:32,337 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2022-07-13 21:50:32,337 INFO L186 Difference]: Start difference. First operand has 104 places, 77 transitions, 238 flow. Second operand 9 states and 693 transitions. [2022-07-13 21:50:32,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 107 transitions, 552 flow [2022-07-13 21:50:32,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 535 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-07-13 21:50:32,347 INFO L242 Difference]: Finished difference. Result has 106 places, 77 transitions, 253 flow [2022-07-13 21:50:32,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=253, PETRI_PLACES=106, PETRI_TRANSITIONS=77} [2022-07-13 21:50:32,348 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 23 predicate places. [2022-07-13 21:50:32,348 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 77 transitions, 253 flow [2022-07-13 21:50:32,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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) [2022-07-13 21:50:32,348 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:32,348 INFO L200 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:32,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:50:32,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:32,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash 675104110, now seen corresponding path program 1 times [2022-07-13 21:50:32,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:32,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240829314] [2022-07-13 21:50:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:32,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:32,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240829314] [2022-07-13 21:50:32,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240829314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:32,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:32,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097207325] [2022-07-13 21:50:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:32,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:32,467 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2022-07-13 21:50:32,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 77 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2022-07-13 21:50:32,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:32,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2022-07-13 21:50:32,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:32,574 INFO L129 PetriNetUnfolder]: 51/289 cut-off events. [2022-07-13 21:50:32,574 INFO L130 PetriNetUnfolder]: For 698/775 co-relation queries the response was YES. [2022-07-13 21:50:32,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 289 events. 51/289 cut-off events. For 698/775 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1263 event pairs, 16 based on Foata normal form. 11/292 useless extension candidates. Maximal degree in co-relation 749. Up to 61 conditions per place. [2022-07-13 21:50:32,576 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 14 selfloop transitions, 5 changer transitions 23/105 dead transitions. [2022-07-13 21:50:32,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 543 flow [2022-07-13 21:50:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:50:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:50:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2022-07-13 21:50:32,579 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8693528693528694 [2022-07-13 21:50:32,579 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2022-07-13 21:50:32,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2022-07-13 21:50:32,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:32,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2022-07-13 21:50:32,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 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) [2022-07-13 21:50:32,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2022-07-13 21:50:32,582 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 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) [2022-07-13 21:50:32,582 INFO L186 Difference]: Start difference. First operand has 106 places, 77 transitions, 253 flow. Second operand 9 states and 712 transitions. [2022-07-13 21:50:32,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 543 flow [2022-07-13 21:50:32,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 512 flow, removed 14 selfloop flow, removed 7 redundant places. [2022-07-13 21:50:32,586 INFO L242 Difference]: Finished difference. Result has 108 places, 80 transitions, 301 flow [2022-07-13 21:50:32,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=301, PETRI_PLACES=108, PETRI_TRANSITIONS=80} [2022-07-13 21:50:32,587 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 25 predicate places. [2022-07-13 21:50:32,587 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 80 transitions, 301 flow [2022-07-13 21:50:32,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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) [2022-07-13 21:50:32,588 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:32,588 INFO L200 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:32,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:50:32,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:32,589 INFO L85 PathProgramCache]: Analyzing trace with hash -2024305191, now seen corresponding path program 1 times [2022-07-13 21:50:32,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:32,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874123362] [2022-07-13 21:50:32,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:32,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:32,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:32,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874123362] [2022-07-13 21:50:32,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874123362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:32,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:32,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:50:32,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899016781] [2022-07-13 21:50:32,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:32,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:50:32,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:50:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:50:32,710 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-13 21:50:32,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 80 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2022-07-13 21:50:32,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:32,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-13 21:50:32,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:32,870 INFO L129 PetriNetUnfolder]: 450/1063 cut-off events. [2022-07-13 21:50:32,870 INFO L130 PetriNetUnfolder]: For 789/848 co-relation queries the response was YES. [2022-07-13 21:50:32,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2300 conditions, 1063 events. 450/1063 cut-off events. For 789/848 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7036 event pairs, 26 based on Foata normal form. 13/943 useless extension candidates. Maximal degree in co-relation 2249. Up to 267 conditions per place. [2022-07-13 21:50:32,879 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/112 dead transitions. [2022-07-13 21:50:32,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 112 transitions, 461 flow [2022-07-13 21:50:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:50:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 21:50:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2022-07-13 21:50:32,881 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2022-07-13 21:50:32,881 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2022-07-13 21:50:32,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2022-07-13 21:50:32,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:32,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2022-07-13 21:50:32,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 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) [2022-07-13 21:50:32,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2022-07-13 21:50:32,884 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 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) [2022-07-13 21:50:32,884 INFO L186 Difference]: Start difference. First operand has 108 places, 80 transitions, 301 flow. Second operand 10 states and 788 transitions. [2022-07-13 21:50:32,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 112 transitions, 461 flow [2022-07-13 21:50:32,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 112 transitions, 438 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-07-13 21:50:32,888 INFO L242 Difference]: Finished difference. Result has 113 places, 95 transitions, 398 flow [2022-07-13 21:50:32,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=398, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2022-07-13 21:50:32,889 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 30 predicate places. [2022-07-13 21:50:32,889 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 398 flow [2022-07-13 21:50:32,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 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) [2022-07-13 21:50:32,889 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:32,889 INFO L200 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:50:32,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash -171567264, now seen corresponding path program 1 times [2022-07-13 21:50:32,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:32,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664109717] [2022-07-13 21:50:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:32,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:32,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:32,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664109717] [2022-07-13 21:50:32,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664109717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:32,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:32,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:50:32,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634270374] [2022-07-13 21:50:32,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:32,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:50:32,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:50:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:50:32,997 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-13 21:50:32,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2022-07-13 21:50:32,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:32,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-13 21:50:32,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:33,215 INFO L129 PetriNetUnfolder]: 426/1007 cut-off events. [2022-07-13 21:50:33,216 INFO L130 PetriNetUnfolder]: For 2570/2779 co-relation queries the response was YES. [2022-07-13 21:50:33,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3579 conditions, 1007 events. 426/1007 cut-off events. For 2570/2779 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6787 event pairs, 9 based on Foata normal form. 87/990 useless extension candidates. Maximal degree in co-relation 3523. Up to 411 conditions per place. [2022-07-13 21:50:33,224 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 21 selfloop transitions, 29 changer transitions 17/133 dead transitions. [2022-07-13 21:50:33,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 133 transitions, 768 flow [2022-07-13 21:50:33,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 21:50:33,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-13 21:50:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2022-07-13 21:50:33,227 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2022-07-13 21:50:33,227 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2022-07-13 21:50:33,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2022-07-13 21:50:33,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:33,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2022-07-13 21:50:33,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 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) [2022-07-13 21:50:33,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2022-07-13 21:50:33,232 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 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) [2022-07-13 21:50:33,232 INFO L186 Difference]: Start difference. First operand has 113 places, 95 transitions, 398 flow. Second operand 13 states and 1025 transitions. [2022-07-13 21:50:33,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 133 transitions, 768 flow [2022-07-13 21:50:33,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 133 transitions, 748 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-07-13 21:50:33,239 INFO L242 Difference]: Finished difference. Result has 128 places, 108 transitions, 586 flow [2022-07-13 21:50:33,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=586, PETRI_PLACES=128, PETRI_TRANSITIONS=108} [2022-07-13 21:50:33,241 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 45 predicate places. [2022-07-13 21:50:33,241 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 108 transitions, 586 flow [2022-07-13 21:50:33,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 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) [2022-07-13 21:50:33,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:33,242 INFO L200 CegarLoopForPetriNet]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:33,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:50:33,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:33,243 INFO L85 PathProgramCache]: Analyzing trace with hash 697049083, now seen corresponding path program 1 times [2022-07-13 21:50:33,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:33,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214072609] [2022-07-13 21:50:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:33,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214072609] [2022-07-13 21:50:33,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214072609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:33,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:33,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:50:33,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956843791] [2022-07-13 21:50:33,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:33,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:50:33,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:33,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:50:33,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:50:33,344 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2022-07-13 21:50:33,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 108 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2022-07-13 21:50:33,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:33,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2022-07-13 21:50:33,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:33,574 INFO L129 PetriNetUnfolder]: 314/887 cut-off events. [2022-07-13 21:50:33,575 INFO L130 PetriNetUnfolder]: For 4406/4585 co-relation queries the response was YES. [2022-07-13 21:50:33,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3724 conditions, 887 events. 314/887 cut-off events. For 4406/4585 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6547 event pairs, 6 based on Foata normal form. 67/852 useless extension candidates. Maximal degree in co-relation 3662. Up to 310 conditions per place. [2022-07-13 21:50:33,581 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2022-07-13 21:50:33,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 114 transitions, 747 flow [2022-07-13 21:50:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:50:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 21:50:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1162 transitions. [2022-07-13 21:50:33,583 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8512820512820513 [2022-07-13 21:50:33,583 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1162 transitions. [2022-07-13 21:50:33,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1162 transitions. [2022-07-13 21:50:33,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:33,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1162 transitions. [2022-07-13 21:50:33,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.46666666666667) internal successors, (1162), 15 states have internal predecessors, (1162), 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) [2022-07-13 21:50:33,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 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) [2022-07-13 21:50:33,589 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 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) [2022-07-13 21:50:33,589 INFO L186 Difference]: Start difference. First operand has 128 places, 108 transitions, 586 flow. Second operand 15 states and 1162 transitions. [2022-07-13 21:50:33,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 114 transitions, 747 flow [2022-07-13 21:50:33,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 587 flow, removed 54 selfloop flow, removed 18 redundant places. [2022-07-13 21:50:33,606 INFO L242 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2022-07-13 21:50:33,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2022-07-13 21:50:33,606 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 31 predicate places. [2022-07-13 21:50:33,607 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2022-07-13 21:50:33,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 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) [2022-07-13 21:50:33,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-07-13 21:50:33,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-07-13 21:50:33,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-13 21:50:33,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-07-13 21:50:33,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:50:33,610 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-13 21:50:33,612 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:50:33,613 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:50:33,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:50:33 BasicIcfg [2022-07-13 21:50:33,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:50:33,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:50:33,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:50:33,617 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:50:33,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:31" (3/4) ... [2022-07-13 21:50:33,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:50:33,623 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-07-13 21:50:33,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-07-13 21:50:33,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-07-13 21:50:33,626 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-07-13 21:50:33,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 21:50:33,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:50:33,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:50:33,648 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:50:33,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:50:33,649 INFO L158 Benchmark]: Toolchain (without parser) took 3291.25ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 80.7MB in the beginning and 72.6MB in the end (delta: 8.1MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2022-07-13 21:50:33,649 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 49.3MB in the beginning and 49.3MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:50:33,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.64ms. Allocated memory is still 113.2MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 21:50:33,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.23ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 77.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:33,650 INFO L158 Benchmark]: Boogie Preprocessor took 41.07ms. Allocated memory is still 113.2MB. Free memory was 77.1MB in the beginning and 75.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:33,650 INFO L158 Benchmark]: RCFGBuilder took 316.46ms. Allocated memory is still 113.2MB. Free memory was 75.6MB in the beginning and 63.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 21:50:33,650 INFO L158 Benchmark]: TraceAbstraction took 2502.87ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 63.1MB in the beginning and 75.8MB in the end (delta: -12.7MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2022-07-13 21:50:33,650 INFO L158 Benchmark]: Witness Printer took 31.53ms. Allocated memory is still 142.6MB. Free memory was 75.8MB in the beginning and 72.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:50:33,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 49.3MB in the beginning and 49.3MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.64ms. Allocated memory is still 113.2MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.23ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 77.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.07ms. Allocated memory is still 113.2MB. Free memory was 77.1MB in the beginning and 75.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.46ms. Allocated memory is still 113.2MB. Free memory was 75.6MB in the beginning and 63.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2502.87ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 63.1MB in the beginning and 75.8MB in the end (delta: -12.7MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Witness Printer took 31.53ms. Allocated memory is still 142.6MB. Free memory was 75.8MB in the beginning and 72.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 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: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 254 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 254 mSDsluCounter, 264 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 276 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 378 IncrementalHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 67 mSDtfsCounter, 378 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=586occurred in iteration=5, InterpolantAutomatonStates: 69, 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, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 353 ConstructedInterpolants, 0 QuantifiedInterpolants, 1415 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:50:33,689 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: TRUE