./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 6c24879c 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-?-6c24879 [2022-07-12 10:36:07,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:36:07,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:36:07,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:36:07,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:36:07,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:36:07,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:36:07,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:36:07,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:36:07,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:36:07,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:36:07,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:36:07,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:36:07,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:36:07,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:36:07,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:36:07,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:36:07,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:36:07,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:36:07,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:36:07,422 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:36:07,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:36:07,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:36:07,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:36:07,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:36:07,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:36:07,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:36:07,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:36:07,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:36:07,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:36:07,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:36:07,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:36:07,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:36:07,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:36:07,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:36:07,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:36:07,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:36:07,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:36:07,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:36:07,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:36:07,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:36:07,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:36:07,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:36:07,473 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:36:07,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:36:07,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:36:07,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:36:07,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:36:07,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:36:07,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:36:07,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:36:07,481 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:36:07,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:36:07,482 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:36:07,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:36:07,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:36:07,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:36:07,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:36:07,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:36:07,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:36:07,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:36:07,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:36:07,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:36:07,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:36:07,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:36:07,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:36:07,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:36:07,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:36:07,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:36:07,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:36:07,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:36:07,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:36:07,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:36:07,487 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:36:07,487 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:36:07,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:36:07,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2022-07-12 10:36:07,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:36:07,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:36:07,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:36:07,764 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:36:07,765 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:36:07,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-07-12 10:36:07,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79ceae6a/0640c08ed4034a4e9b3dcc1ae5da9b95/FLAG135258481 [2022-07-12 10:36:08,276 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:36:08,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2022-07-12 10:36:08,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79ceae6a/0640c08ed4034a4e9b3dcc1ae5da9b95/FLAG135258481 [2022-07-12 10:36:08,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79ceae6a/0640c08ed4034a4e9b3dcc1ae5da9b95 [2022-07-12 10:36:08,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:36:08,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:36:08,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:36:08,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:36:08,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:36:08,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109b775e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08, skipping insertion in model container [2022-07-12 10:36:08,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:36:08,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:36:08,887 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] [2022-07-12 10:36:08,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:36:08,899 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:36:08,920 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] [2022-07-12 10:36:08,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:36:08,934 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:36:08,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08 WrapperNode [2022-07-12 10:36:08,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:36:08,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:36:08,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:36:08,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:36:08,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,968 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-07-12 10:36:08,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:36:08,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:36:08,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:36:08,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:36:08,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:08,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:36:08,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:36:08,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:36:08,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:36:08,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (1/1) ... [2022-07-12 10:36:09,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:36:09,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:36:09,024 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) [2022-07-12 10:36:09,049 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 [2022-07-12 10:36:09,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:36:09,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:36:09,065 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:36:09,065 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:36:09,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:36:09,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:36:09,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:36:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:36:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:36:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:36:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:36:09,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:36:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:36:09,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:36:09,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:36:09,070 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:36:09,142 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:36:09,143 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:36:09,468 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:36:09,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:36:09,481 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 10:36:09,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:36:09 BoogieIcfgContainer [2022-07-12 10:36:09,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:36:09,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:36:09,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:36:09,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:36:09,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:36:08" (1/3) ... [2022-07-12 10:36:09,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7abb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:36:09, skipping insertion in model container [2022-07-12 10:36:09,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:36:08" (2/3) ... [2022-07-12 10:36:09,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7abb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:36:09, skipping insertion in model container [2022-07-12 10:36:09,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:36:09" (3/3) ... [2022-07-12 10:36:09,495 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-07-12 10:36:09,500 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:36:09,509 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:36:09,509 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:36:09,509 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:36:09,617 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:36:09,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2022-07-12 10:36:09,770 INFO L129 PetriNetUnfolder]: 17/209 cut-off events. [2022-07-12 10:36:09,771 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:36:09,776 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. [2022-07-12 10:36:09,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 212 transitions, 448 flow [2022-07-12 10:36:09,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 198 transitions, 414 flow [2022-07-12 10:36:09,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:36:09,801 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@624e392b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@68da28b6 [2022-07-12 10:36:09,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-12 10:36:09,841 INFO L129 PetriNetUnfolder]: 17/197 cut-off events. [2022-07-12 10:36:09,841 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:36:09,842 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:09,842 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] [2022-07-12 10:36:09,843 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)] === [2022-07-12 10:36:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:09,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1627701037, now seen corresponding path program 1 times [2022-07-12 10:36:09,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:09,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865650949] [2022-07-12 10:36:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:09,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:36:10,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:10,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865650949] [2022-07-12 10:36:10,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865650949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:10,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:10,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:36:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14597327] [2022-07-12 10:36:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:36:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:36:10,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:36:10,380 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 212 [2022-07-12 10:36:10,387 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) [2022-07-12 10:36:10,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:10,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 212 [2022-07-12 10:36:10,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:10,650 INFO L129 PetriNetUnfolder]: 281/705 cut-off events. [2022-07-12 10:36:10,650 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2022-07-12 10:36:10,654 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. [2022-07-12 10:36:10,663 INFO L132 encePairwiseOnDemand]: 189/212 looper letters, 52 selfloop transitions, 6 changer transitions 7/193 dead transitions. [2022-07-12 10:36:10,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 193 transitions, 540 flow [2022-07-12 10:36:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:36:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:36:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1068 transitions. [2022-07-12 10:36:10,683 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7196765498652291 [2022-07-12 10:36:10,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1068 transitions. [2022-07-12 10:36:10,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1068 transitions. [2022-07-12 10:36:10,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:10,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1068 transitions. [2022-07-12 10:36:10,696 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) [2022-07-12 10:36:10,706 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) [2022-07-12 10:36:10,708 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) [2022-07-12 10:36:10,710 INFO L186 Difference]: Start difference. First operand has 191 places, 198 transitions, 414 flow. Second operand 7 states and 1068 transitions. [2022-07-12 10:36:10,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 193 transitions, 540 flow [2022-07-12 10:36:10,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 193 transitions, 524 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:36:10,721 INFO L242 Difference]: Finished difference. Result has 193 places, 180 transitions, 389 flow [2022-07-12 10:36:10,723 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} [2022-07-12 10:36:10,726 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-12 10:36:10,726 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 180 transitions, 389 flow [2022-07-12 10:36:10,727 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) [2022-07-12 10:36:10,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:10,728 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] [2022-07-12 10:36:10,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:36:10,729 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)] === [2022-07-12 10:36:10,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:10,731 INFO L85 PathProgramCache]: Analyzing trace with hash -957692159, now seen corresponding path program 1 times [2022-07-12 10:36:10,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:10,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368994016] [2022-07-12 10:36:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:10,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:36:11,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:11,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368994016] [2022-07-12 10:36:11,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368994016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:36:11,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:36:11,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:36:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354798164] [2022-07-12 10:36:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:11,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:36:11,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:11,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:36:11,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:36:11,114 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 212 [2022-07-12 10:36:11,115 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) [2022-07-12 10:36:11,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:11,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 212 [2022-07-12 10:36:11,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:11,415 INFO L129 PetriNetUnfolder]: 283/725 cut-off events. [2022-07-12 10:36:11,415 INFO L130 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2022-07-12 10:36:11,416 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. [2022-07-12 10:36:11,420 INFO L132 encePairwiseOnDemand]: 196/212 looper letters, 73 selfloop transitions, 11 changer transitions 23/217 dead transitions. [2022-07-12 10:36:11,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 217 transitions, 683 flow [2022-07-12 10:36:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:36:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:36:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1214 transitions. [2022-07-12 10:36:11,423 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6362683438155137 [2022-07-12 10:36:11,423 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1214 transitions. [2022-07-12 10:36:11,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1214 transitions. [2022-07-12 10:36:11,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:11,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1214 transitions. [2022-07-12 10:36:11,427 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) [2022-07-12 10:36:11,431 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) [2022-07-12 10:36:11,432 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) [2022-07-12 10:36:11,432 INFO L186 Difference]: Start difference. First operand has 193 places, 180 transitions, 389 flow. Second operand 9 states and 1214 transitions. [2022-07-12 10:36:11,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 217 transitions, 683 flow [2022-07-12 10:36:11,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 217 transitions, 671 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:36:11,438 INFO L242 Difference]: Finished difference. Result has 193 places, 182 transitions, 427 flow [2022-07-12 10:36:11,438 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} [2022-07-12 10:36:11,439 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-12 10:36:11,439 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 182 transitions, 427 flow [2022-07-12 10:36:11,440 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) [2022-07-12 10:36:11,440 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:11,441 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] [2022-07-12 10:36:11,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:36:11,441 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)] === [2022-07-12 10:36:11,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1282933884, now seen corresponding path program 1 times [2022-07-12 10:36:11,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:11,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429979625] [2022-07-12 10:36:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:11,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:11,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429979625] [2022-07-12 10:36:11,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429979625] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:36:11,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318280] [2022-07-12 10:36:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:11,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:36:11,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:36:11,567 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) [2022-07-12 10:36:11,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:36:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:11,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:36:11,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:36:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:11,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:36:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:12,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318280] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 10:36:12,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:36:12,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-07-12 10:36:12,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137514775] [2022-07-12 10:36:12,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:36:12,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:36:12,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:36:12,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:36:12,152 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 212 [2022-07-12 10:36:12,153 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) [2022-07-12 10:36:12,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:12,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 212 [2022-07-12 10:36:12,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:12,273 INFO L129 PetriNetUnfolder]: 51/345 cut-off events. [2022-07-12 10:36:12,274 INFO L130 PetriNetUnfolder]: For 96/106 co-relation queries the response was YES. [2022-07-12 10:36:12,276 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. [2022-07-12 10:36:12,277 INFO L132 encePairwiseOnDemand]: 204/212 looper letters, 46 selfloop transitions, 7 changer transitions 0/189 dead transitions. [2022-07-12 10:36:12,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 189 transitions, 558 flow [2022-07-12 10:36:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:36:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:36:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2022-07-12 10:36:12,281 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7695417789757413 [2022-07-12 10:36:12,281 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2022-07-12 10:36:12,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2022-07-12 10:36:12,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:36:12,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2022-07-12 10:36:12,284 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) [2022-07-12 10:36:12,287 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) [2022-07-12 10:36:12,288 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) [2022-07-12 10:36:12,288 INFO L186 Difference]: Start difference. First operand has 193 places, 182 transitions, 427 flow. Second operand 7 states and 1142 transitions. [2022-07-12 10:36:12,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 189 transitions, 558 flow [2022-07-12 10:36:12,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 189 transitions, 532 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-07-12 10:36:12,293 INFO L242 Difference]: Finished difference. Result has 193 places, 184 transitions, 435 flow [2022-07-12 10:36:12,294 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} [2022-07-12 10:36:12,295 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-07-12 10:36:12,295 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 184 transitions, 435 flow [2022-07-12 10:36:12,295 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) [2022-07-12 10:36:12,296 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:36:12,296 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] [2022-07-12 10:36:12,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:36:12,519 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 [2022-07-12 10:36:12,520 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)] === [2022-07-12 10:36:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:36:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash -460638022, now seen corresponding path program 1 times [2022-07-12 10:36:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:36:12,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925261000] [2022-07-12 10:36:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:12,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:36:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:13,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:36:13,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925261000] [2022-07-12 10:36:13,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925261000] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:36:13,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82491547] [2022-07-12 10:36:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:36:13,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:36:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:36:13,972 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) [2022-07-12 10:36:14,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:36:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:36:14,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-12 10:36:14,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:36:14,134 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 [2022-07-12 10:36:14,177 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:36:14,178 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 [2022-07-12 10:36:14,227 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:36:14,228 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 [2022-07-12 10:36:14,594 INFO L356 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-07-12 10:36:14,595 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 [2022-07-12 10:36:14,941 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 [2022-07-12 10:36:15,865 INFO L356 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-07-12 10:36:15,865 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 [2022-07-12 10:36:16,113 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 [2022-07-12 10:36:16,634 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 [2022-07-12 10:36:16,751 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 [2022-07-12 10:36:16,998 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 [2022-07-12 10:36:17,099 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 [2022-07-12 10:36:17,333 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 [2022-07-12 10:36:18,487 INFO L356 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2022-07-12 10:36:18,487 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 [2022-07-12 10:36:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:18,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:36:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 10:36:28,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82491547] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:36:28,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:36:28,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 40, 19] total 84 [2022-07-12 10:36:28,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215098551] [2022-07-12 10:36:28,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:36:28,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-07-12 10:36:28,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:36:28,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-07-12 10:36:28,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=6694, Unknown=10, NotChecked=0, Total=6972 [2022-07-12 10:36:28,172 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 212 [2022-07-12 10:36:28,177 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) [2022-07-12 10:36:28,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:36:28,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 212 [2022-07-12 10:36:28,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:36:57,671 WARN L233 SmtUtils]: Spent 7.29s 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) [2022-07-12 10:37:21,539 WARN L233 SmtUtils]: Spent 15.53s 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) [2022-07-12 10:37:44,857 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 107 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:38:20,907 WARN L233 SmtUtils]: Spent 5.67s 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) [2022-07-12 10:38:34,523 WARN L233 SmtUtils]: Spent 6.77s 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) [2022-07-12 10:39:02,873 WARN L233 SmtUtils]: Spent 17.97s 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) [2022-07-12 10:39:49,746 WARN L233 SmtUtils]: Spent 6.36s 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)