./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-parray-copy.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/popl20-more-parray-copy.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 a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:10:45,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:10:45,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:10:45,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:10:45,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:10:45,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:10:45,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:10:45,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:10:45,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:10:45,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:10:45,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:10:45,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:10:45,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:10:45,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:10:45,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:10:45,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:10:45,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:10:45,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:10:45,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:10:45,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:10:45,417 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:10:45,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:10:45,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:10:45,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:10:45,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:10:45,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:10:45,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:10:45,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:10:45,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:10:45,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:10:45,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:10:45,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:10:45,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:10:45,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:10:45,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:10:45,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:10:45,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:10:45,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:10:45,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:10:45,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:10:45,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:10:45,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:10:45,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 09:10:45,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:10:45,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:10:45,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:10:45,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:10:45,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:10:45,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:10:45,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:10:45,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:10:45,488 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:10:45,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:10:45,489 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 09:10:45,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:10:45,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 09:10:45,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:10:45,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:10:45,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:10:45,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:10:45,490 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 09:10:45,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:10:45,491 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:10:45,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:10:45,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:10:45,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:10:45,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:10:45,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:10:45,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:10:45,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:10:45,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:10:45,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:10:45,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:10:45,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:10:45,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:10:45,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:10:45,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2022-07-21 09:10:45,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:10:45,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:10:45,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:10:45,854 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:10:45,855 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:10:45,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-07-21 09:10:45,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed92b713d/b5d36b6af5f94524b280dc45edf9acc5/FLAG2e2ceb6fd [2022-07-21 09:10:46,377 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:10:46,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-07-21 09:10:46,385 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed92b713d/b5d36b6af5f94524b280dc45edf9acc5/FLAG2e2ceb6fd [2022-07-21 09:10:46,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed92b713d/b5d36b6af5f94524b280dc45edf9acc5 [2022-07-21 09:10:46,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:10:46,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:10:46,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:10:46,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:10:46,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:10:46,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:10:46" (1/1) ... [2022-07-21 09:10:46,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58dd3952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:46, skipping insertion in model container [2022-07-21 09:10:46,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:10:46" (1/1) ... [2022-07-21 09:10:46,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:10:46,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:10:46,966 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/popl20-more-parray-copy.wvr.c[2385,2398] [2022-07-21 09:10:46,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:10:46,999 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:10:47,049 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/popl20-more-parray-copy.wvr.c[2385,2398] [2022-07-21 09:10:47,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:10:47,066 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:10:47,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47 WrapperNode [2022-07-21 09:10:47,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:10:47,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:10:47,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:10:47,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:10:47,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,128 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-07-21 09:10:47,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:10:47,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:10:47,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:10:47,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:10:47,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:10:47,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:10:47,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:10:47,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:10:47,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (1/1) ... [2022-07-21 09:10:47,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:10:47,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:10:47,221 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 09:10:47,229 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 09:10:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:10:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-21 09:10:47,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-21 09:10:47,257 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-21 09:10:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-21 09:10:47,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-21 09:10:47,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-21 09:10:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:10:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:10:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:10:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:10:47,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:10:47,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:10:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:10:47,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:10:47,262 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 09:10:47,367 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:10:47,368 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:10:47,671 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:10:47,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:10:47,681 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-21 09:10:47,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:10:47 BoogieIcfgContainer [2022-07-21 09:10:47,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:10:47,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:10:47,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:10:47,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:10:47,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:10:46" (1/3) ... [2022-07-21 09:10:47,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c1ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:10:47, skipping insertion in model container [2022-07-21 09:10:47,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:10:47" (2/3) ... [2022-07-21 09:10:47,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c1ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:10:47, skipping insertion in model container [2022-07-21 09:10:47,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:10:47" (3/3) ... [2022-07-21 09:10:47,690 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-07-21 09:10:47,695 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 09:10:47,703 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:10:47,704 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:10:47,704 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 09:10:47,782 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 09:10:47,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2022-07-21 09:10:47,948 INFO L129 PetriNetUnfolder]: 17/209 cut-off events. [2022-07-21 09:10:47,949 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:10:47,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 17/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-07-21 09:10:47,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 212 transitions, 448 flow [2022-07-21 09:10:47,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 198 transitions, 414 flow [2022-07-21 09:10:47,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:10:47,976 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@7b918499, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@11cb848c [2022-07-21 09:10:47,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-21 09:10:48,040 INFO L129 PetriNetUnfolder]: 17/197 cut-off events. [2022-07-21 09:10:48,041 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 09:10:48,041 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:10:48,042 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] [2022-07-21 09:10:48,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:10:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:10:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1627701037, now seen corresponding path program 1 times [2022-07-21 09:10:48,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:10:48,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586805879] [2022-07-21 09:10:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:10:48,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:10:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:10:48,614 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 09:10:48,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:10:48,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586805879] [2022-07-21 09:10:48,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586805879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:10:48,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:10:48,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:10:48,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123608610] [2022-07-21 09:10:48,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:10:48,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:10:48,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:10:48,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:10:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:10:48,664 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 212 [2022-07-21 09:10:48,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 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 09:10:48,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:10:48,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 212 [2022-07-21 09:10:48,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:10:49,001 INFO L129 PetriNetUnfolder]: 281/705 cut-off events. [2022-07-21 09:10:49,015 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-07-21 09:10:49,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 705 events. 281/705 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2656 event pairs, 65 based on Foata normal form. 9/540 useless extension candidates. Maximal degree in co-relation 936. Up to 238 conditions per place. [2022-07-21 09:10:49,024 INFO L132 encePairwiseOnDemand]: 189/212 looper letters, 52 selfloop transitions, 6 changer transitions 7/193 dead transitions. [2022-07-21 09:10:49,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 193 transitions, 540 flow [2022-07-21 09:10:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:10:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:10:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1068 transitions. [2022-07-21 09:10:49,067 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7196765498652291 [2022-07-21 09:10:49,068 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1068 transitions. [2022-07-21 09:10:49,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1068 transitions. [2022-07-21 09:10:49,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:10:49,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1068 transitions. [2022-07-21 09:10:49,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 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 09:10:49,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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 09:10:49,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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 09:10:49,107 INFO L186 Difference]: Start difference. First operand has 191 places, 198 transitions, 414 flow. Second operand 7 states and 1068 transitions. [2022-07-21 09:10:49,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 193 transitions, 540 flow [2022-07-21 09:10:49,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 193 transitions, 524 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-21 09:10:49,119 INFO L242 Difference]: Finished difference. Result has 193 places, 180 transitions, 389 flow [2022-07-21 09:10:49,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=389, PETRI_PLACES=193, PETRI_TRANSITIONS=180} [2022-07-21 09:10:49,130 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-21 09:10:49,130 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 180 transitions, 389 flow [2022-07-21 09:10:49,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 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 09:10:49,131 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:10:49,132 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] [2022-07-21 09:10:49,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:10:49,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:10:49,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:10:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash -957692159, now seen corresponding path program 1 times [2022-07-21 09:10:49,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:10:49,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569668161] [2022-07-21 09:10:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:10:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:10:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:10:49,604 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 09:10:49,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:10:49,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569668161] [2022-07-21 09:10:49,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569668161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:10:49,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:10:49,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:10:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573517838] [2022-07-21 09:10:49,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:10:49,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:10:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:10:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:10:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:10:49,623 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 212 [2022-07-21 09:10:49,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 180 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 129.55555555555554) internal successors, (1166), 9 states have internal predecessors, (1166), 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 09:10:49,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:10:49,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 212 [2022-07-21 09:10:49,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:10:49,988 INFO L129 PetriNetUnfolder]: 283/725 cut-off events. [2022-07-21 09:10:49,989 INFO L130 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-07-21 09:10:49,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 725 events. 283/725 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2556 event pairs, 128 based on Foata normal form. 1/559 useless extension candidates. Maximal degree in co-relation 670. Up to 385 conditions per place. [2022-07-21 09:10:49,996 INFO L132 encePairwiseOnDemand]: 196/212 looper letters, 73 selfloop transitions, 11 changer transitions 23/217 dead transitions. [2022-07-21 09:10:49,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 217 transitions, 683 flow [2022-07-21 09:10:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:10:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 09:10:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1214 transitions. [2022-07-21 09:10:50,005 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6362683438155137 [2022-07-21 09:10:50,005 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1214 transitions. [2022-07-21 09:10:50,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1214 transitions. [2022-07-21 09:10:50,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:10:50,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1214 transitions. [2022-07-21 09:10:50,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 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 09:10:50,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 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 09:10:50,028 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 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 09:10:50,028 INFO L186 Difference]: Start difference. First operand has 193 places, 180 transitions, 389 flow. Second operand 9 states and 1214 transitions. [2022-07-21 09:10:50,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 217 transitions, 683 flow [2022-07-21 09:10:50,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 217 transitions, 671 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 09:10:50,039 INFO L242 Difference]: Finished difference. Result has 193 places, 182 transitions, 427 flow [2022-07-21 09:10:50,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=427, PETRI_PLACES=193, PETRI_TRANSITIONS=182} [2022-07-21 09:10:50,041 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-21 09:10:50,041 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 182 transitions, 427 flow [2022-07-21 09:10:50,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 129.55555555555554) internal successors, (1166), 9 states have internal predecessors, (1166), 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 09:10:50,042 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:10:50,042 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] [2022-07-21 09:10:50,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:10:50,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:10:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:10:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1282933884, now seen corresponding path program 1 times [2022-07-21 09:10:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:10:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030200460] [2022-07-21 09:10:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:10:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:10:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:10:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 09:10:50,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:10:50,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030200460] [2022-07-21 09:10:50,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030200460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:10:50,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794433381] [2022-07-21 09:10:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:10:50,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:10:50,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:10:50,203 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 09:10:50,204 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 09:10:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:10:50,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:10:50,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:10:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 09:10:50,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:10:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 09:10:50,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794433381] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 09:10:50,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:10:50,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-21 09:10:50,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552302229] [2022-07-21 09:10:50,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:10:50,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:10:50,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:10:50,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:10:50,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:10:50,788 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 212 [2022-07-21 09:10:50,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 182 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 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 09:10:50,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:10:50,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 212 [2022-07-21 09:10:50,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:10:50,939 INFO L129 PetriNetUnfolder]: 51/345 cut-off events. [2022-07-21 09:10:50,939 INFO L130 PetriNetUnfolder]: For 96/106 co-relation queries the response was YES. [2022-07-21 09:10:50,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 345 events. 51/345 cut-off events. For 96/106 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 844 event pairs, 23 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 418. Up to 66 conditions per place. [2022-07-21 09:10:50,944 INFO L132 encePairwiseOnDemand]: 204/212 looper letters, 46 selfloop transitions, 7 changer transitions 0/189 dead transitions. [2022-07-21 09:10:50,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 189 transitions, 558 flow [2022-07-21 09:10:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:10:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 09:10:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2022-07-21 09:10:50,948 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7695417789757413 [2022-07-21 09:10:50,948 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2022-07-21 09:10:50,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2022-07-21 09:10:50,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 09:10:50,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2022-07-21 09:10:50,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 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 09:10:50,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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 09:10:50,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 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 09:10:50,957 INFO L186 Difference]: Start difference. First operand has 193 places, 182 transitions, 427 flow. Second operand 7 states and 1142 transitions. [2022-07-21 09:10:50,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 189 transitions, 558 flow [2022-07-21 09:10:50,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 189 transitions, 532 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-21 09:10:50,966 INFO L242 Difference]: Finished difference. Result has 193 places, 184 transitions, 435 flow [2022-07-21 09:10:50,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=435, PETRI_PLACES=193, PETRI_TRANSITIONS=184} [2022-07-21 09:10:50,969 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-21 09:10:50,969 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 184 transitions, 435 flow [2022-07-21 09:10:50,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 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 09:10:50,970 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 09:10:50,970 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] [2022-07-21 09:10:51,007 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 09:10:51,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:10:51,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-21 09:10:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:10:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash -460638022, now seen corresponding path program 1 times [2022-07-21 09:10:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:10:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783422106] [2022-07-21 09:10:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:10:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:10:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:10:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 09:10:52,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:10:52,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783422106] [2022-07-21 09:10:52,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783422106] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:10:52,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219470271] [2022-07-21 09:10:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:10:52,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:10:52,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:10:52,528 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 09:10:52,529 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 09:10:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:10:52,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-21 09:10:52,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:10:52,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 09:10:52,756 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:10:52,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 18 [2022-07-21 09:10:52,822 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:10:52,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 16 treesize of output 22 [2022-07-21 09:10:53,242 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-21 09:10:53,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 37 [2022-07-21 09:10:53,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 09:10:54,563 INFO L356 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-07-21 09:10:54,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 41 [2022-07-21 09:10:54,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 09:10:55,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 09:10:55,489 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 09:10:55,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 09:10:55,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 09:10:56,136 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 23 treesize of output 23 [2022-07-21 09:10:57,366 INFO L356 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-07-21 09:10:57,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 16 [2022-07-21 09:10:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 09:10:57,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:11:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 09:11:06,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219470271] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:11:06,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:11:06,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 40, 19] total 84 [2022-07-21 09:11:06,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116941720] [2022-07-21 09:11:06,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:11:06,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-07-21 09:11:06,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:11:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-07-21 09:11:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6695, Unknown=9, NotChecked=0, Total=6972 [2022-07-21 09:11:06,399 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 212 [2022-07-21 09:11:06,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 184 transitions, 435 flow. Second operand has 84 states, 84 states have (on average 72.53571428571429) internal successors, (6093), 84 states have internal predecessors, (6093), 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 09:11:06,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 09:11:06,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 212 [2022-07-21 09:11:06,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 09:11:39,135 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 111 DAG size of output: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:12:03,030 WARN L233 SmtUtils]: Spent 15.16s on a formula simplification. DAG size of input: 121 DAG size of output: 113 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:12:13,723 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select |c_#valid| |c_ULTIMATE.start_main_~#t1~0#1.base|) 1)) (.cse3 (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (.cse1 (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (.cse2 (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) (.cse6 (<= c_~N~0 1))) (and .cse0 (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~A~0.base)) (or .cse1 .cse2) (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|)) (or .cse0 .cse2) (or .cse3 .cse2) .cse3 (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| c_~B~0.base)) (or (< (+ c_thread3Thread1of1ForFork1_~i~2 1) c_~N~0) (forall ((|ULTIMATE.start_main_~k~0#1| Int) (~B~0.offset Int)) (or (<= c_~N~0 |ULTIMATE.start_main_~k~0#1|) (< |ULTIMATE.start_main_~k~0#1| 0) (let ((.cse4 (store (select |c_#memory_int| c_~B~0.base) (+ ~B~0.offset (* c_thread3Thread1of1ForFork1_~i~2 4)) |c_thread3Thread1of1ForFork1_#t~mem6|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| 4))) (= (select (select (store |c_#memory_int| c_~B~0.base .cse4) c_~A~0.base) (+ .cse5 c_~A~0.offset)) (select .cse4 (+ .cse5 ~B~0.offset))))))) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (not (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| c_~A~0.base)) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 1) (= c_~N~0 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (<= 1 c_~N~0) (<= c_~N~0 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse6 (= |c_ULTIMATE.start_create_fresh_int_array_#in~size#1| c_~N~0) (not (= c_~A~0.base |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (< (+ c_~A~0.base 1) |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~B~0.offset 0) .cse1 (<= |c_ULTIMATE.start_create_fresh_int_array_~size#1| c_~N~0) (or (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~B~0.base)) .cse2) (or (<= (+ c_~B~0.offset 1 (* c_thread3Thread1of1ForFork1_~i~2 4)) (* c_~N~0 4)) (and (= (select (select |c_#memory_int| c_~A~0.base) 0) (select (select |c_#memory_int| c_~B~0.base) 0)) .cse6)) (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (= c_~A~0.offset 0) (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| c_~A~0.base)) (< (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1) |c_ULTIMATE.start_main_~#t2~0#1.base|) (not (= c_~B~0.base c_~A~0.base)) (= (select |c_#valid| |c_ULTIMATE.start_main_~#t3~0#1.base|) 1) (= (select |c_#valid| c_~A~0.base) 1) (< 0 c_~N~0) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (< (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1) |c_ULTIMATE.start_main_~#t2~0#1.base|) (= (select |c_#valid| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) 1))) is different from false [2022-07-21 09:12:53,945 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 110 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:13:07,669 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 108 DAG size of output: 101 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:13:35,462 WARN L233 SmtUtils]: Spent 18.39s on a formula simplification. DAG size of input: 118 DAG size of output: 111 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 09:14:15,665 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 112 DAG size of output: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)