./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/weaver/parallel-parallel-sum-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:02:21,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:02:21,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:02:21,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:02:21,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:02:21,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:02:21,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:02:21,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:02:21,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:02:21,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:02:21,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:02:21,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:02:21,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:02:21,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:02:21,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:02:21,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:02:21,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:02:21,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:02:21,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:02:21,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:02:21,417 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:02:21,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:02:21,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:02:21,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:02:21,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:02:21,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:02:21,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:02:21,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:02:21,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:02:21,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:02:21,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:02:21,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:02:21,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:02:21,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:02:21,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:02:21,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:02:21,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:02:21,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:02:21,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:02:21,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:02:21,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:02:21,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:02:21,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:02:21,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:02:21,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:02:21,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:02:21,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:02:21,476 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:02:21,476 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:02:21,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:02:21,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:02:21,477 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:02:21,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:02:21,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:02:21,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:02:21,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:02:21,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:02:21,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:02:21,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:02:21,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:02:21,491 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:02:21,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:02:21,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:02:21,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:02:21,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:02:21,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:02:21,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:02:21,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:02:21,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:02:21,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:02:21,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:02:21,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:02:21,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:02:21,494 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:02:21,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:02:21,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:02:21,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0b350b5c7953744a22c8334b20c4dc8efdff09f1ecb36de8b1744d1e20f0260 [2022-07-21 09:02:21,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:02:21,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:02:21,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:02:21,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:02:21,841 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:02:21,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-07-21 09:02:21,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8300a13/ebb75bd538b549f9a3e5ec93bdbc97ee/FLAG5355dac39 [2022-07-21 09:02:22,303 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:02:22,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-2.wvr.c [2022-07-21 09:02:22,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8300a13/ebb75bd538b549f9a3e5ec93bdbc97ee/FLAG5355dac39 [2022-07-21 09:02:22,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8300a13/ebb75bd538b549f9a3e5ec93bdbc97ee [2022-07-21 09:02:22,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:02:22,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:02:22,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:02:22,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:02:22,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:02:22,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:02:22" (1/1) ... [2022-07-21 09:02:22,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56eacb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:22, skipping insertion in model container [2022-07-21 09:02:22,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:02:22" (1/1) ... [2022-07-21 09:02:22,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:02:22,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:02:22,927 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/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-07-21 09:02:22,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:02:22,983 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:02:23,020 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/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-07-21 09:02:23,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:02:23,053 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:02:23,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23 WrapperNode [2022-07-21 09:02:23,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:02:23,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:02:23,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:02:23,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:02:23,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,127 INFO L137 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 386 [2022-07-21 09:02:23,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:02:23,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:02:23,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:02:23,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:02:23,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:02:23,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:02:23,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:02:23,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:02:23,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (1/1) ... [2022-07-21 09:02:23,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:02:23,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:02:23,220 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) [2022-07-21 09:02:23,238 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 [2022-07-21 09:02:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:02:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:02:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:02:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:02:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:02:23,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:02:23,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:02:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:02:23,267 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:02:23,267 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:02:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-21 09:02:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-21 09:02:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:02:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-21 09:02:23,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-21 09:02:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-21 09:02:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-21 09:02:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 09:02:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 09:02:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:02:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:02:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:02:23,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:02:23,271 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 09:02:23,440 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:02:23,441 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:02:23,883 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:02:24,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:02:24,068 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-21 09:02:24,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:02:24 BoogieIcfgContainer [2022-07-21 09:02:24,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:02:24,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:02:24,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:02:24,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:02:24,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:02:22" (1/3) ... [2022-07-21 09:02:24,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5490f39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:02:24, skipping insertion in model container [2022-07-21 09:02:24,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:02:23" (2/3) ... [2022-07-21 09:02:24,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5490f39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:02:24, skipping insertion in model container [2022-07-21 09:02:24,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:02:24" (3/3) ... [2022-07-21 09:02:24,076 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-07-21 09:02:24,087 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:02:24,094 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:02:24,094 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:02:24,095 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:02:24,215 INFO L135 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-07-21 09:02:24,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 307 places, 311 transitions, 694 flow [2022-07-21 09:02:24,377 INFO L129 PetriNetUnfolder]: 21/265 cut-off events. [2022-07-21 09:02:24,377 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-21 09:02:24,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 265 events. 21/265 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 289 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 225. Up to 3 conditions per place. [2022-07-21 09:02:24,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 311 transitions, 694 flow [2022-07-21 09:02:24,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 256 transitions, 560 flow [2022-07-21 09:02:24,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:02:24,416 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@51571b28, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2781b4f5 [2022-07-21 09:02:24,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-21 09:02:24,455 INFO L129 PetriNetUnfolder]: 21/255 cut-off events. [2022-07-21 09:02:24,455 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-21 09:02:24,455 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:24,456 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:02:24,457 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:24,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:24,461 INFO L85 PathProgramCache]: Analyzing trace with hash -686154843, now seen corresponding path program 1 times [2022-07-21 09:02:24,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:24,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512900632] [2022-07-21 09:02:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:24,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512900632] [2022-07-21 09:02:24,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512900632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:24,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:24,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:02:24,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343164962] [2022-07-21 09:02:24,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:24,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:02:24,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:02:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:02:24,797 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 315 [2022-07-21 09:02:24,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 256 transitions, 560 flow. Second operand has 2 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 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) [2022-07-21 09:02:24,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:24,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 315 [2022-07-21 09:02:24,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:25,116 INFO L129 PetriNetUnfolder]: 409/1072 cut-off events. [2022-07-21 09:02:25,116 INFO L130 PetriNetUnfolder]: For 345/355 co-relation queries the response was YES. [2022-07-21 09:02:25,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 1072 events. 409/1072 cut-off events. For 345/355 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4709 event pairs, 192 based on Foata normal form. 170/1112 useless extension candidates. Maximal degree in co-relation 1710. Up to 553 conditions per place. [2022-07-21 09:02:25,133 INFO L132 encePairwiseOnDemand]: 303/315 looper letters, 26 selfloop transitions, 0 changer transitions 5/244 dead transitions. [2022-07-21 09:02:25,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 244 transitions, 588 flow [2022-07-21 09:02:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:02:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-21 09:02:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 566 transitions. [2022-07-21 09:02:25,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8984126984126984 [2022-07-21 09:02:25,153 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 566 transitions. [2022-07-21 09:02:25,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 566 transitions. [2022-07-21 09:02:25,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:25,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 566 transitions. [2022-07-21 09:02:25,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 283.0) internal successors, (566), 2 states have internal predecessors, (566), 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) [2022-07-21 09:02:25,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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) [2022-07-21 09:02:25,172 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 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) [2022-07-21 09:02:25,173 INFO L186 Difference]: Start difference. First operand has 254 places, 256 transitions, 560 flow. Second operand 2 states and 566 transitions. [2022-07-21 09:02:25,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 244 transitions, 588 flow [2022-07-21 09:02:25,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 244 transitions, 556 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-21 09:02:25,186 INFO L242 Difference]: Finished difference. Result has 243 places, 239 transitions, 494 flow [2022-07-21 09:02:25,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=494, PETRI_PLACES=243, PETRI_TRANSITIONS=239} [2022-07-21 09:02:25,192 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -11 predicate places. [2022-07-21 09:02:25,192 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 239 transitions, 494 flow [2022-07-21 09:02:25,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 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) [2022-07-21 09:02:25,193 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:25,194 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:02:25,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:02:25,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1397478105, now seen corresponding path program 1 times [2022-07-21 09:02:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:25,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459377021] [2022-07-21 09:02:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:25,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:25,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:25,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459377021] [2022-07-21 09:02:25,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459377021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:25,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:25,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:02:25,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907057673] [2022-07-21 09:02:25,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:25,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:02:25,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:25,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:02:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:02:26,004 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 315 [2022-07-21 09:02:26,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 239 transitions, 494 flow. Second operand has 13 states, 13 states have (on average 212.46153846153845) internal successors, (2762), 13 states have internal predecessors, (2762), 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) [2022-07-21 09:02:26,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:26,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 315 [2022-07-21 09:02:26,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:27,615 INFO L129 PetriNetUnfolder]: 2352/5531 cut-off events. [2022-07-21 09:02:27,616 INFO L130 PetriNetUnfolder]: For 480/496 co-relation queries the response was YES. [2022-07-21 09:02:27,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9308 conditions, 5531 events. 2352/5531 cut-off events. For 480/496 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 41536 event pairs, 469 based on Foata normal form. 52/4872 useless extension candidates. Maximal degree in co-relation 9305. Up to 817 conditions per place. [2022-07-21 09:02:27,674 INFO L132 encePairwiseOnDemand]: 298/315 looper letters, 190 selfloop transitions, 20 changer transitions 26/400 dead transitions. [2022-07-21 09:02:27,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 400 transitions, 1358 flow [2022-07-21 09:02:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:02:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 09:02:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2943 transitions. [2022-07-21 09:02:27,682 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7186813186813187 [2022-07-21 09:02:27,682 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2943 transitions. [2022-07-21 09:02:27,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2943 transitions. [2022-07-21 09:02:27,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:27,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2943 transitions. [2022-07-21 09:02:27,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 226.3846153846154) internal successors, (2943), 13 states have internal predecessors, (2943), 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) [2022-07-21 09:02:27,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 315.0) internal successors, (4410), 14 states have internal predecessors, (4410), 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) [2022-07-21 09:02:27,701 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 315.0) internal successors, (4410), 14 states have internal predecessors, (4410), 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) [2022-07-21 09:02:27,701 INFO L186 Difference]: Start difference. First operand has 243 places, 239 transitions, 494 flow. Second operand 13 states and 2943 transitions. [2022-07-21 09:02:27,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 400 transitions, 1358 flow [2022-07-21 09:02:27,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 400 transitions, 1358 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 09:02:27,714 INFO L242 Difference]: Finished difference. Result has 257 places, 254 transitions, 612 flow [2022-07-21 09:02:27,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=612, PETRI_PLACES=257, PETRI_TRANSITIONS=254} [2022-07-21 09:02:27,716 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 3 predicate places. [2022-07-21 09:02:27,716 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 254 transitions, 612 flow [2022-07-21 09:02:27,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 212.46153846153845) internal successors, (2762), 13 states have internal predecessors, (2762), 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) [2022-07-21 09:02:27,718 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:27,718 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:02:27,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:02:27,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1660702535, now seen corresponding path program 1 times [2022-07-21 09:02:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:27,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421529493] [2022-07-21 09:02:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:27,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:28,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:28,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421529493] [2022-07-21 09:02:28,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421529493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:28,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:28,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 09:02:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407491703] [2022-07-21 09:02:28,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:28,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:02:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:02:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:02:28,272 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 315 [2022-07-21 09:02:28,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 254 transitions, 612 flow. Second operand has 11 states, 11 states have (on average 217.1818181818182) internal successors, (2389), 11 states have internal predecessors, (2389), 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) [2022-07-21 09:02:28,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:28,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 315 [2022-07-21 09:02:28,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:29,377 INFO L129 PetriNetUnfolder]: 1364/3739 cut-off events. [2022-07-21 09:02:29,377 INFO L130 PetriNetUnfolder]: For 681/692 co-relation queries the response was YES. [2022-07-21 09:02:29,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6515 conditions, 3739 events. 1364/3739 cut-off events. For 681/692 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 26751 event pairs, 301 based on Foata normal form. 28/3340 useless extension candidates. Maximal degree in co-relation 6504. Up to 633 conditions per place. [2022-07-21 09:02:29,408 INFO L132 encePairwiseOnDemand]: 301/315 looper letters, 125 selfloop transitions, 9 changer transitions 24/325 dead transitions. [2022-07-21 09:02:29,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 325 transitions, 1104 flow [2022-07-21 09:02:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:02:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 09:02:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2491 transitions. [2022-07-21 09:02:29,414 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7189033189033189 [2022-07-21 09:02:29,414 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2491 transitions. [2022-07-21 09:02:29,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2491 transitions. [2022-07-21 09:02:29,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:29,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2491 transitions. [2022-07-21 09:02:29,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 226.45454545454547) internal successors, (2491), 11 states have internal predecessors, (2491), 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) [2022-07-21 09:02:29,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 315.0) internal successors, (3780), 12 states have internal predecessors, (3780), 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) [2022-07-21 09:02:29,426 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 315.0) internal successors, (3780), 12 states have internal predecessors, (3780), 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) [2022-07-21 09:02:29,426 INFO L186 Difference]: Start difference. First operand has 257 places, 254 transitions, 612 flow. Second operand 11 states and 2491 transitions. [2022-07-21 09:02:29,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 325 transitions, 1104 flow [2022-07-21 09:02:29,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 325 transitions, 1100 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 09:02:29,434 INFO L242 Difference]: Finished difference. Result has 265 places, 243 transitions, 566 flow [2022-07-21 09:02:29,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=566, PETRI_PLACES=265, PETRI_TRANSITIONS=243} [2022-07-21 09:02:29,435 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 11 predicate places. [2022-07-21 09:02:29,435 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 243 transitions, 566 flow [2022-07-21 09:02:29,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 217.1818181818182) internal successors, (2389), 11 states have internal predecessors, (2389), 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) [2022-07-21 09:02:29,437 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:29,437 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, 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, 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, 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] [2022-07-21 09:02:29,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:02:29,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:29,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2040656776, now seen corresponding path program 1 times [2022-07-21 09:02:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:29,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737200595] [2022-07-21 09:02:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:29,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:30,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737200595] [2022-07-21 09:02:30,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737200595] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:02:30,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665395708] [2022-07-21 09:02:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:30,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:02:30,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:02:30,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:02:30,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:02:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:30,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-21 09:02:30,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:02:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:31,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:02:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:02:32,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665395708] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:02:32,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:02:32,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 19] total 40 [2022-07-21 09:02:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137621734] [2022-07-21 09:02:32,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:32,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:02:32,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:02:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2022-07-21 09:02:32,519 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 315 [2022-07-21 09:02:32,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 243 transitions, 566 flow. Second operand has 12 states, 12 states have (on average 219.58333333333334) internal successors, (2635), 12 states have internal predecessors, (2635), 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) [2022-07-21 09:02:32,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:32,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 315 [2022-07-21 09:02:32,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:33,691 INFO L129 PetriNetUnfolder]: 1904/4725 cut-off events. [2022-07-21 09:02:33,696 INFO L130 PetriNetUnfolder]: For 1479/1489 co-relation queries the response was YES. [2022-07-21 09:02:33,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 4725 events. 1904/4725 cut-off events. For 1479/1489 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 35030 event pairs, 217 based on Foata normal form. 9/4197 useless extension candidates. Maximal degree in co-relation 8999. Up to 2219 conditions per place. [2022-07-21 09:02:33,740 INFO L132 encePairwiseOnDemand]: 299/315 looper letters, 104 selfloop transitions, 10 changer transitions 44/329 dead transitions. [2022-07-21 09:02:33,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 329 transitions, 1136 flow [2022-07-21 09:02:33,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 09:02:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 09:02:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3378 transitions. [2022-07-21 09:02:33,748 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.714920634920635 [2022-07-21 09:02:33,748 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3378 transitions. [2022-07-21 09:02:33,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3378 transitions. [2022-07-21 09:02:33,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:33,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3378 transitions. [2022-07-21 09:02:33,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 225.2) internal successors, (3378), 15 states have internal predecessors, (3378), 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) [2022-07-21 09:02:33,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 315.0) internal successors, (5040), 16 states have internal predecessors, (5040), 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) [2022-07-21 09:02:33,764 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 315.0) internal successors, (5040), 16 states have internal predecessors, (5040), 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) [2022-07-21 09:02:33,764 INFO L186 Difference]: Start difference. First operand has 265 places, 243 transitions, 566 flow. Second operand 15 states and 3378 transitions. [2022-07-21 09:02:33,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 329 transitions, 1136 flow [2022-07-21 09:02:33,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 329 transitions, 1092 flow, removed 9 selfloop flow, removed 11 redundant places. [2022-07-21 09:02:33,776 INFO L242 Difference]: Finished difference. Result has 268 places, 249 transitions, 619 flow [2022-07-21 09:02:33,777 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=619, PETRI_PLACES=268, PETRI_TRANSITIONS=249} [2022-07-21 09:02:33,778 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 14 predicate places. [2022-07-21 09:02:33,778 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 249 transitions, 619 flow [2022-07-21 09:02:33,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 219.58333333333334) internal successors, (2635), 12 states have internal predecessors, (2635), 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) [2022-07-21 09:02:33,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:33,780 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, 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, 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, 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] [2022-07-21 09:02:33,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:02:33,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:02:33,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1516786736, now seen corresponding path program 2 times [2022-07-21 09:02:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:33,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892130850] [2022-07-21 09:02:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:02:34,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:34,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892130850] [2022-07-21 09:02:34,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892130850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:34,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:34,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:02:34,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035834371] [2022-07-21 09:02:34,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:34,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:02:34,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:34,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:02:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:02:34,297 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 315 [2022-07-21 09:02:34,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 249 transitions, 619 flow. Second operand has 10 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 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) [2022-07-21 09:02:34,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:34,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 315 [2022-07-21 09:02:34,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:35,253 INFO L129 PetriNetUnfolder]: 1535/3997 cut-off events. [2022-07-21 09:02:35,253 INFO L130 PetriNetUnfolder]: For 2238/2253 co-relation queries the response was YES. [2022-07-21 09:02:35,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8248 conditions, 3997 events. 1535/3997 cut-off events. For 2238/2253 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 29168 event pairs, 252 based on Foata normal form. 7/3566 useless extension candidates. Maximal degree in co-relation 8230. Up to 1100 conditions per place. [2022-07-21 09:02:35,289 INFO L132 encePairwiseOnDemand]: 302/315 looper letters, 116 selfloop transitions, 15 changer transitions 8/320 dead transitions. [2022-07-21 09:02:35,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 320 transitions, 1164 flow [2022-07-21 09:02:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:02:35,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 09:02:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2411 transitions. [2022-07-21 09:02:35,296 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-07-21 09:02:35,296 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2411 transitions. [2022-07-21 09:02:35,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2411 transitions. [2022-07-21 09:02:35,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:35,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2411 transitions. [2022-07-21 09:02:35,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 241.1) internal successors, (2411), 10 states have internal predecessors, (2411), 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) [2022-07-21 09:02:35,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-07-21 09:02:35,308 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-07-21 09:02:35,309 INFO L186 Difference]: Start difference. First operand has 268 places, 249 transitions, 619 flow. Second operand 10 states and 2411 transitions. [2022-07-21 09:02:35,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 320 transitions, 1164 flow [2022-07-21 09:02:35,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 320 transitions, 1086 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-07-21 09:02:35,324 INFO L242 Difference]: Finished difference. Result has 261 places, 256 transitions, 670 flow [2022-07-21 09:02:35,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=670, PETRI_PLACES=261, PETRI_TRANSITIONS=256} [2022-07-21 09:02:35,326 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 7 predicate places. [2022-07-21 09:02:35,327 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 256 transitions, 670 flow [2022-07-21 09:02:35,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 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) [2022-07-21 09:02:35,329 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:35,330 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, 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, 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, 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] [2022-07-21 09:02:35,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 09:02:35,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1288185474, now seen corresponding path program 3 times [2022-07-21 09:02:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:35,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059464473] [2022-07-21 09:02:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:35,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:02:35,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:35,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059464473] [2022-07-21 09:02:35,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059464473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:02:35,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:02:35,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:02:35,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393874715] [2022-07-21 09:02:35,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:02:35,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:02:35,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:02:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:02:35,670 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 315 [2022-07-21 09:02:35,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 256 transitions, 670 flow. Second operand has 10 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 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) [2022-07-21 09:02:35,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:35,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 315 [2022-07-21 09:02:35,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:36,544 INFO L129 PetriNetUnfolder]: 1534/3958 cut-off events. [2022-07-21 09:02:36,544 INFO L130 PetriNetUnfolder]: For 1859/1885 co-relation queries the response was YES. [2022-07-21 09:02:36,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8226 conditions, 3958 events. 1534/3958 cut-off events. For 1859/1885 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 28734 event pairs, 280 based on Foata normal form. 13/3534 useless extension candidates. Maximal degree in co-relation 8211. Up to 1100 conditions per place. [2022-07-21 09:02:36,576 INFO L132 encePairwiseOnDemand]: 302/315 looper letters, 109 selfloop transitions, 18 changer transitions 8/316 dead transitions. [2022-07-21 09:02:36,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 316 transitions, 1149 flow [2022-07-21 09:02:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:02:36,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 09:02:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2405 transitions. [2022-07-21 09:02:36,582 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-07-21 09:02:36,582 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2405 transitions. [2022-07-21 09:02:36,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2405 transitions. [2022-07-21 09:02:36,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:36,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2405 transitions. [2022-07-21 09:02:36,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 240.5) internal successors, (2405), 10 states have internal predecessors, (2405), 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) [2022-07-21 09:02:36,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-07-21 09:02:36,593 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 315.0) internal successors, (3465), 11 states have internal predecessors, (3465), 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) [2022-07-21 09:02:36,593 INFO L186 Difference]: Start difference. First operand has 261 places, 256 transitions, 670 flow. Second operand 10 states and 2405 transitions. [2022-07-21 09:02:36,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 316 transitions, 1149 flow [2022-07-21 09:02:36,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 316 transitions, 1123 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-07-21 09:02:36,600 INFO L242 Difference]: Finished difference. Result has 266 places, 259 transitions, 731 flow [2022-07-21 09:02:36,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=731, PETRI_PLACES=266, PETRI_TRANSITIONS=259} [2022-07-21 09:02:36,601 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 12 predicate places. [2022-07-21 09:02:36,602 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 259 transitions, 731 flow [2022-07-21 09:02:36,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.5) internal successors, (2325), 10 states have internal predecessors, (2325), 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) [2022-07-21 09:02:36,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:36,603 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, 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, 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, 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] [2022-07-21 09:02:36,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:02:36,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1410420252, now seen corresponding path program 1 times [2022-07-21 09:02:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:36,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675117269] [2022-07-21 09:02:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:36,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:36,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675117269] [2022-07-21 09:02:36,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675117269] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:02:36,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227616482] [2022-07-21 09:02:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:36,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:02:36,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:02:37,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:02:37,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:02:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:37,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 09:02:37,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:02:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:02:37,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:02:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:02:37,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227616482] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:02:37,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:02:37,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 30 [2022-07-21 09:02:37,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538297073] [2022-07-21 09:02:37,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:02:37,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 09:02:37,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 09:02:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-07-21 09:02:37,892 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 315 [2022-07-21 09:02:37,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 259 transitions, 731 flow. Second operand has 30 states, 30 states have (on average 207.9) internal successors, (6237), 30 states have internal predecessors, (6237), 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) [2022-07-21 09:02:37,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:37,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 315 [2022-07-21 09:02:37,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:43,719 INFO L129 PetriNetUnfolder]: 7625/17948 cut-off events. [2022-07-21 09:02:43,719 INFO L130 PetriNetUnfolder]: For 10674/10684 co-relation queries the response was YES. [2022-07-21 09:02:43,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38224 conditions, 17948 events. 7625/17948 cut-off events. For 10674/10684 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 170338 event pairs, 485 based on Foata normal form. 180/16211 useless extension candidates. Maximal degree in co-relation 38207. Up to 1639 conditions per place. [2022-07-21 09:02:43,859 INFO L132 encePairwiseOnDemand]: 291/315 looper letters, 542 selfloop transitions, 84 changer transitions 192/977 dead transitions. [2022-07-21 09:02:43,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 977 transitions, 4965 flow [2022-07-21 09:02:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-21 09:02:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-07-21 09:02:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10721 transitions. [2022-07-21 09:02:43,882 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6945902170391967 [2022-07-21 09:02:43,882 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10721 transitions. [2022-07-21 09:02:43,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10721 transitions. [2022-07-21 09:02:43,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:43,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10721 transitions. [2022-07-21 09:02:43,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 218.79591836734693) internal successors, (10721), 49 states have internal predecessors, (10721), 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) [2022-07-21 09:02:43,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 315.0) internal successors, (15750), 50 states have internal predecessors, (15750), 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) [2022-07-21 09:02:43,930 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 315.0) internal successors, (15750), 50 states have internal predecessors, (15750), 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) [2022-07-21 09:02:43,930 INFO L186 Difference]: Start difference. First operand has 266 places, 259 transitions, 731 flow. Second operand 49 states and 10721 transitions. [2022-07-21 09:02:43,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 977 transitions, 4965 flow [2022-07-21 09:02:43,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 977 transitions, 4811 flow, removed 42 selfloop flow, removed 7 redundant places. [2022-07-21 09:02:43,959 INFO L242 Difference]: Finished difference. Result has 337 places, 342 transitions, 1435 flow [2022-07-21 09:02:43,960 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1435, PETRI_PLACES=337, PETRI_TRANSITIONS=342} [2022-07-21 09:02:43,960 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 83 predicate places. [2022-07-21 09:02:43,960 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 342 transitions, 1435 flow [2022-07-21 09:02:43,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 207.9) internal successors, (6237), 30 states have internal predecessors, (6237), 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) [2022-07-21 09:02:43,962 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:43,962 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:02:43,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:02:44,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-21 09:02:44,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:44,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash -14836491, now seen corresponding path program 2 times [2022-07-21 09:02:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:44,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573451336] [2022-07-21 09:02:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:44,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:02:44,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573451336] [2022-07-21 09:02:44,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573451336] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:02:44,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213628808] [2022-07-21 09:02:44,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:02:44,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:02:44,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:02:44,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:02:44,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:02:44,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:02:44,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:02:44,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 09:02:44,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:02:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:02:45,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:02:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:02:45,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213628808] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:02:45,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:02:45,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 31 [2022-07-21 09:02:45,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729557237] [2022-07-21 09:02:45,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:02:45,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-21 09:02:45,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:45,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-21 09:02:45,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-07-21 09:02:45,488 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 315 [2022-07-21 09:02:45,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 342 transitions, 1435 flow. Second operand has 31 states, 31 states have (on average 207.83870967741936) internal successors, (6443), 31 states have internal predecessors, (6443), 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) [2022-07-21 09:02:45,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:45,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 315 [2022-07-21 09:02:45,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:02:51,833 INFO L129 PetriNetUnfolder]: 8754/20453 cut-off events. [2022-07-21 09:02:51,834 INFO L130 PetriNetUnfolder]: For 42464/42468 co-relation queries the response was YES. [2022-07-21 09:02:51,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54172 conditions, 20453 events. 8754/20453 cut-off events. For 42464/42468 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 198485 event pairs, 792 based on Foata normal form. 165/18285 useless extension candidates. Maximal degree in co-relation 54125. Up to 4064 conditions per place. [2022-07-21 09:02:52,087 INFO L132 encePairwiseOnDemand]: 290/315 looper letters, 378 selfloop transitions, 65 changer transitions 270/872 dead transitions. [2022-07-21 09:02:52,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 872 transitions, 5813 flow [2022-07-21 09:02:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-21 09:02:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-21 09:02:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9541 transitions. [2022-07-21 09:02:52,102 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6883838383838384 [2022-07-21 09:02:52,102 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 9541 transitions. [2022-07-21 09:02:52,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 9541 transitions. [2022-07-21 09:02:52,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:02:52,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 9541 transitions. [2022-07-21 09:02:52,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 216.8409090909091) internal successors, (9541), 44 states have internal predecessors, (9541), 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) [2022-07-21 09:02:52,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 315.0) internal successors, (14175), 45 states have internal predecessors, (14175), 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) [2022-07-21 09:02:52,147 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 315.0) internal successors, (14175), 45 states have internal predecessors, (14175), 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) [2022-07-21 09:02:52,147 INFO L186 Difference]: Start difference. First operand has 337 places, 342 transitions, 1435 flow. Second operand 44 states and 9541 transitions. [2022-07-21 09:02:52,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 872 transitions, 5813 flow [2022-07-21 09:02:52,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 872 transitions, 4833 flow, removed 461 selfloop flow, removed 24 redundant places. [2022-07-21 09:02:52,408 INFO L242 Difference]: Finished difference. Result has 360 places, 345 transitions, 1475 flow [2022-07-21 09:02:52,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1475, PETRI_PLACES=360, PETRI_TRANSITIONS=345} [2022-07-21 09:02:52,409 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 106 predicate places. [2022-07-21 09:02:52,409 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 345 transitions, 1475 flow [2022-07-21 09:02:52,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 207.83870967741936) internal successors, (6443), 31 states have internal predecessors, (6443), 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) [2022-07-21 09:02:52,411 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:02:52,411 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:02:52,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-21 09:02:52,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:02:52,626 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:02:52,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:02:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash 896520303, now seen corresponding path program 3 times [2022-07-21 09:02:52,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:02:52,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305832667] [2022-07-21 09:02:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:02:52,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:02:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:02:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:02:53,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:02:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305832667] [2022-07-21 09:02:53,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305832667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:02:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251242836] [2022-07-21 09:02:53,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 09:02:53,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:02:53,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:02:53,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:02:53,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:02:53,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 09:02:53,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:02:53,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 09:02:53,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:02:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:02:53,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:02:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:02:53,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251242836] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:02:53,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:02:53,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 30 [2022-07-21 09:02:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551317371] [2022-07-21 09:02:53,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:02:53,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 09:02:53,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:02:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 09:02:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2022-07-21 09:02:53,956 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 315 [2022-07-21 09:02:53,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 345 transitions, 1475 flow. Second operand has 30 states, 30 states have (on average 208.03333333333333) internal successors, (6241), 30 states have internal predecessors, (6241), 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) [2022-07-21 09:02:53,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:02:53,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 315 [2022-07-21 09:02:53,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:03:04,762 INFO L129 PetriNetUnfolder]: 16748/37496 cut-off events. [2022-07-21 09:03:04,762 INFO L130 PetriNetUnfolder]: For 112421/112424 co-relation queries the response was YES. [2022-07-21 09:03:05,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104780 conditions, 37496 events. 16748/37496 cut-off events. For 112421/112424 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 391322 event pairs, 1046 based on Foata normal form. 110/33233 useless extension candidates. Maximal degree in co-relation 104724. Up to 4473 conditions per place. [2022-07-21 09:03:05,186 INFO L132 encePairwiseOnDemand]: 290/315 looper letters, 721 selfloop transitions, 264 changer transitions 271/1415 dead transitions. [2022-07-21 09:03:05,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1415 transitions, 10306 flow [2022-07-21 09:03:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-07-21 09:03:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2022-07-21 09:03:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 15864 transitions. [2022-07-21 09:03:05,205 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6898891063274625 [2022-07-21 09:03:05,206 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 15864 transitions. [2022-07-21 09:03:05,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 15864 transitions. [2022-07-21 09:03:05,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:03:05,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 15864 transitions. [2022-07-21 09:03:05,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 217.31506849315068) internal successors, (15864), 73 states have internal predecessors, (15864), 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) [2022-07-21 09:03:05,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 315.0) internal successors, (23310), 74 states have internal predecessors, (23310), 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) [2022-07-21 09:03:05,256 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 315.0) internal successors, (23310), 74 states have internal predecessors, (23310), 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) [2022-07-21 09:03:05,256 INFO L186 Difference]: Start difference. First operand has 360 places, 345 transitions, 1475 flow. Second operand 73 states and 15864 transitions. [2022-07-21 09:03:05,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1415 transitions, 10306 flow [2022-07-21 09:03:05,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1415 transitions, 9662 flow, removed 266 selfloop flow, removed 23 redundant places. [2022-07-21 09:03:05,954 INFO L242 Difference]: Finished difference. Result has 421 places, 554 transitions, 3821 flow [2022-07-21 09:03:05,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=3821, PETRI_PLACES=421, PETRI_TRANSITIONS=554} [2022-07-21 09:03:05,956 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, 167 predicate places. [2022-07-21 09:03:05,956 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 554 transitions, 3821 flow [2022-07-21 09:03:05,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 208.03333333333333) internal successors, (6241), 30 states have internal predecessors, (6241), 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) [2022-07-21 09:03:05,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:03:05,957 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2022-07-21 09:03:05,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 09:03:06,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:03:06,158 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-07-21 09:03:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:03:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2130032107, now seen corresponding path program 1 times [2022-07-21 09:03:06,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:03:06,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132994684] [2022-07-21 09:03:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:06,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:03:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:03:07,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:03:07,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132994684] [2022-07-21 09:03:07,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132994684] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:03:07,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863045885] [2022-07-21 09:03:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:03:07,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:03:07,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:03:07,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:03:07,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:03:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:03:07,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 123 conjunts are in the unsatisfiable core [2022-07-21 09:03:07,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:03:08,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-21 09:03:08,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:03:08,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:03:09,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:03:09,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:03:09,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:03:10,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:03:10,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-21 09:03:10,378 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:03:10,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2022-07-21 09:03:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:03:11,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:03:37,159 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:03:37,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 55 [2022-07-21 09:03:37,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12758 treesize of output 12054 [2022-07-21 09:03:37,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12054 treesize of output 11094 [2022-07-21 09:03:37,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11094 treesize of output 9558 [2022-07-21 09:03:37,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9558 treesize of output 8022 [2022-07-21 09:03:37,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8022 treesize of output 7494