./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-5.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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:51:11,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:51:11,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:51:11,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:51:11,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:51:11,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:51:11,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:51:11,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:51:11,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:51:11,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:51:11,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:51:11,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:51:11,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:51:11,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:51:11,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:51:11,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:51:11,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:51:11,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:51:11,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:51:11,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:51:11,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:51:11,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:51:11,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:51:11,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:51:11,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:51:11,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:51:11,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:51:11,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:51:11,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:51:11,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:51:11,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:51:11,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:51:11,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:51:11,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:51:11,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:51:11,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:51:11,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:51:11,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:51:11,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:51:11,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:51:11,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:51:11,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:51:11,555 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:51:11,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:51:11,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:51:11,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:51:11,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:51:11,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:51:11,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:51:11,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:51:11,567 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:51:11,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:51:11,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:51:11,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:51:11,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:51:11,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:51:11,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:51:11,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:51:11,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:51:11,570 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:51:11,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:51:11,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:51:11,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:51:11,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:51:11,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:51:11,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:51:11,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:51:11,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:51:11,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:51:11,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:51:11,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:51:11,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:51:11,572 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:51:11,572 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:51:11,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:51:11,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:51:11,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2021-12-17 22:51:11,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:51:11,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:51:11,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:51:11,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:51:11,788 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:51:11,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2021-12-17 22:51:11,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304eacf09/dc22e4f7e54d45268ef1192798f6fd8c/FLAG5f59593f6 [2021-12-17 22:51:12,241 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:51:12,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2021-12-17 22:51:12,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304eacf09/dc22e4f7e54d45268ef1192798f6fd8c/FLAG5f59593f6 [2021-12-17 22:51:12,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304eacf09/dc22e4f7e54d45268ef1192798f6fd8c [2021-12-17 22:51:12,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:51:12,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:51:12,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:51:12,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:51:12,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:51:12,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5a19e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12, skipping insertion in model container [2021-12-17 22:51:12,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:51:12,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:51:12,503 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2021-12-17 22:51:12,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:51:12,520 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:51:12,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2021-12-17 22:51:12,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:51:12,563 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:51:12,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12 WrapperNode [2021-12-17 22:51:12,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:51:12,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:51:12,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:51:12,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:51:12,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,608 INFO L137 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2021-12-17 22:51:12,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:51:12,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:51:12,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:51:12,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:51:12,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:51:12,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:51:12,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:51:12,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:51:12,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (1/1) ... [2021-12-17 22:51:12,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:51:12,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:51:12,666 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) [2021-12-17 22:51:12,676 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 [2021-12-17 22:51:12,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:51:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 22:51:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 22:51:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 22:51:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 22:51:12,698 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-17 22:51:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-17 22:51:12,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-17 22:51:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-17 22:51:12,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:51:12,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-12-17 22:51:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-12-17 22:51:12,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:51:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:51:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 22:51:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 22:51:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:51:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:51:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 22:51:12,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:51:12,702 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:51:12,798 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:51:12,800 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:51:13,051 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:51:13,138 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:51:13,138 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:51:13,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:51:13 BoogieIcfgContainer [2021-12-17 22:51:13,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:51:13,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:51:13,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:51:13,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:51:13,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:51:12" (1/3) ... [2021-12-17 22:51:13,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e4a016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:51:13, skipping insertion in model container [2021-12-17 22:51:13,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:51:12" (2/3) ... [2021-12-17 22:51:13,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e4a016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:51:13, skipping insertion in model container [2021-12-17 22:51:13,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:51:13" (3/3) ... [2021-12-17 22:51:13,147 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2021-12-17 22:51:13,150 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:51:13,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:51:13,150 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 22:51:13,151 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:51:13,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,193 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,197 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,200 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,200 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,200 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,200 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,201 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,201 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,202 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,202 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,202 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,202 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,202 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,203 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,203 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,203 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,204 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,204 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,205 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,205 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,205 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,206 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,206 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,206 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,206 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,206 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,213 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,213 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,214 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,214 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,214 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,214 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,215 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,215 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,216 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,218 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,219 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,219 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,219 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,220 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,220 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,220 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,220 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,221 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,226 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,226 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,227 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,227 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,227 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,227 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:51:13,234 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-12-17 22:51:13,286 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:51:13,293 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 22:51:13,293 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-17 22:51:13,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 179 places, 165 transitions, 370 flow [2021-12-17 22:51:13,384 INFO L129 PetriNetUnfolder]: 2/160 cut-off events. [2021-12-17 22:51:13,384 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-17 22:51:13,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 160 events. 2/160 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2021-12-17 22:51:13,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 165 transitions, 370 flow [2021-12-17 22:51:13,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 145 transitions, 320 flow [2021-12-17 22:51:13,433 INFO L129 PetriNetUnfolder]: 2/144 cut-off events. [2021-12-17 22:51:13,433 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-17 22:51:13,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:13,434 INFO L254 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] [2021-12-17 22:51:13,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:13,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1882316905, now seen corresponding path program 1 times [2021-12-17 22:51:13,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:13,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367689324] [2021-12-17 22:51:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:13,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:14,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:14,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367689324] [2021-12-17 22:51:14,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367689324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:14,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:14,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 22:51:14,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534842743] [2021-12-17 22:51:14,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:14,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 22:51:14,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:14,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 22:51:14,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-17 22:51:14,447 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2021-12-17 22:51:14,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 145 transitions, 320 flow. Second operand has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 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) [2021-12-17 22:51:14,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:14,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2021-12-17 22:51:14,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:51:20,548 INFO L129 PetriNetUnfolder]: 28398/43787 cut-off events. [2021-12-17 22:51:20,549 INFO L130 PetriNetUnfolder]: For 7195/7249 co-relation queries the response was YES. [2021-12-17 22:51:20,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86820 conditions, 43787 events. 28398/43787 cut-off events. For 7195/7249 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 330731 event pairs, 16376 based on Foata normal form. 4/42714 useless extension candidates. Maximal degree in co-relation 68872. Up to 12802 conditions per place. [2021-12-17 22:51:20,943 INFO L132 encePairwiseOnDemand]: 141/165 looper letters, 122 selfloop transitions, 27 changer transitions 26/267 dead transitions. [2021-12-17 22:51:20,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 267 transitions, 1004 flow [2021-12-17 22:51:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 22:51:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-17 22:51:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1957 transitions. [2021-12-17 22:51:20,965 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7412878787878788 [2021-12-17 22:51:20,966 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1957 transitions. [2021-12-17 22:51:20,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1957 transitions. [2021-12-17 22:51:20,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:51:20,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1957 transitions. [2021-12-17 22:51:20,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 122.3125) internal successors, (1957), 16 states have internal predecessors, (1957), 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) [2021-12-17 22:51:20,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 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) [2021-12-17 22:51:20,994 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 165.0) internal successors, (2805), 17 states have internal predecessors, (2805), 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) [2021-12-17 22:51:20,996 INFO L186 Difference]: Start difference. First operand has 159 places, 145 transitions, 320 flow. Second operand 16 states and 1957 transitions. [2021-12-17 22:51:20,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 267 transitions, 1004 flow [2021-12-17 22:51:21,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 267 transitions, 924 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-12-17 22:51:21,105 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 479 flow [2021-12-17 22:51:21,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=479, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2021-12-17 22:51:21,110 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2021-12-17 22:51:21,110 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 479 flow [2021-12-17 22:51:21,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.08333333333333) internal successors, (1381), 12 states have internal predecessors, (1381), 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) [2021-12-17 22:51:21,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:21,112 INFO L254 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] [2021-12-17 22:51:21,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:51:21,113 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1644980583, now seen corresponding path program 2 times [2021-12-17 22:51:21,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:21,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068867107] [2021-12-17 22:51:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:21,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:21,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:21,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068867107] [2021-12-17 22:51:21,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068867107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:21,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:21,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:51:21,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614676923] [2021-12-17 22:51:21,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:21,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:51:21,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:51:21,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:51:21,552 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 165 [2021-12-17 22:51:21,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 479 flow. Second operand has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 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) [2021-12-17 22:51:21,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:21,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 165 [2021-12-17 22:51:21,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:51:25,643 INFO L129 PetriNetUnfolder]: 24946/42110 cut-off events. [2021-12-17 22:51:25,644 INFO L130 PetriNetUnfolder]: For 33867/33867 co-relation queries the response was YES. [2021-12-17 22:51:25,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107062 conditions, 42110 events. 24946/42110 cut-off events. For 33867/33867 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 368485 event pairs, 6868 based on Foata normal form. 1/41568 useless extension candidates. Maximal degree in co-relation 107043. Up to 22411 conditions per place. [2021-12-17 22:51:26,105 INFO L132 encePairwiseOnDemand]: 152/165 looper letters, 65 selfloop transitions, 16 changer transitions 47/226 dead transitions. [2021-12-17 22:51:26,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 226 transitions, 993 flow [2021-12-17 22:51:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 22:51:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 22:51:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1279 transitions. [2021-12-17 22:51:26,109 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7751515151515151 [2021-12-17 22:51:26,109 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1279 transitions. [2021-12-17 22:51:26,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1279 transitions. [2021-12-17 22:51:26,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:51:26,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1279 transitions. [2021-12-17 22:51:26,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.9) internal successors, (1279), 10 states have internal predecessors, (1279), 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) [2021-12-17 22:51:26,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2021-12-17 22:51:26,117 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2021-12-17 22:51:26,117 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 479 flow. Second operand 10 states and 1279 transitions. [2021-12-17 22:51:26,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 226 transitions, 993 flow [2021-12-17 22:51:26,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 226 transitions, 954 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-12-17 22:51:26,180 INFO L242 Difference]: Finished difference. Result has 172 places, 166 transitions, 546 flow [2021-12-17 22:51:26,181 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=546, PETRI_PLACES=172, PETRI_TRANSITIONS=166} [2021-12-17 22:51:26,184 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 13 predicate places. [2021-12-17 22:51:26,184 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 166 transitions, 546 flow [2021-12-17 22:51:26,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 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) [2021-12-17 22:51:26,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:26,185 INFO L254 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] [2021-12-17 22:51:26,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:51:26,186 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1191499175, now seen corresponding path program 3 times [2021-12-17 22:51:26,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:26,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235656869] [2021-12-17 22:51:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:26,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:26,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:26,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235656869] [2021-12-17 22:51:26,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235656869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:26,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:26,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 22:51:26,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215079805] [2021-12-17 22:51:26,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:26,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 22:51:26,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:26,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 22:51:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2021-12-17 22:51:26,377 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-17 22:51:26,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 166 transitions, 546 flow. Second operand has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 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) [2021-12-17 22:51:26,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:26,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-17 22:51:26,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:51:28,208 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([497] L128-->L131: Formula: (= v_~b~0_7 (ite (= 0 (ite (or (not (= 0 (mod v_~b~0_8 256))) (= 1 v_~x~0_6)) 1 0)) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][203], [42#L115true, 44#L93true, 252#(<= (+ ~s~0 3) ~t~0), 5#L161-2true, Black: 225#(= ~b~0 (* 256 (div ~b~0 256))), Black: 236#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= ~b~0 0) (not (= 1 ~x~0)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 ~b~0)), Black: 238#(and (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= ~b~0 0) (not (= 1 ~x~0)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 ~b~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 234#(and (<= ~b~0 0) (not (= 1 ~x~0)) (<= 0 ~b~0)), 101#L74true, Black: 226#(and (= ~b~0 (* 256 (div ~b~0 256))) (not (= 1 ~x~0))), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 186#(and (<= ~t~0 ~s~0) (<= ~x~0 0) (= ~b~0 (* 256 (div ~b~0 256)))), 221#true, Black: 187#(and (<= ~x~0 0) (= ~b~0 (* 256 (div ~b~0 256))) (<= ~m2~0 ~s~0)), Black: 188#(and (<= ~x~0 0) (= ~b~0 (* 256 (div ~b~0 256)))), 82#L131true]) [2021-12-17 22:51:28,208 INFO L384 tUnfolder$Statistics]: this new event has 110 ancestors and is cut-off event [2021-12-17 22:51:28,208 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2021-12-17 22:51:28,209 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2021-12-17 22:51:28,209 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2021-12-17 22:51:28,210 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([491] L109-->L112: Formula: (= v_~b~0_5 (ite (= 0 (ite (or (= 1 v_~x~0_5) (not (= 0 (mod v_~b~0_6 256)))) 1 0)) 0 1)) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][166], [44#L93true, 145#L112true, 73#L134true, 252#(<= (+ ~s~0 3) ~t~0), 5#L161-2true, Black: 225#(= ~b~0 (* 256 (div ~b~0 256))), Black: 236#(and (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= ~b~0 0) (not (= 1 ~x~0)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 ~b~0)), Black: 238#(and (< 0 (+ |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0) (<= ~b~0 0) (not (= 1 ~x~0)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 ~b~0)), Black: 201#(and (<= ~x~0 0) (<= ~b~0 0) (<= 0 ~b~0)), Black: 234#(and (<= ~b~0 0) (not (= 1 ~x~0)) (<= 0 ~b~0)), 101#L74true, Black: 226#(and (= ~b~0 (* 256 (div ~b~0 256))) (not (= 1 ~x~0))), Black: 191#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 186#(and (<= ~t~0 ~s~0) (<= ~x~0 0) (= ~b~0 (* 256 (div ~b~0 256)))), 221#true, Black: 187#(and (<= ~x~0 0) (= ~b~0 (* 256 (div ~b~0 256))) (<= ~m2~0 ~s~0)), Black: 188#(and (<= ~x~0 0) (= ~b~0 (* 256 (div ~b~0 256))))]) [2021-12-17 22:51:28,210 INFO L384 tUnfolder$Statistics]: this new event has 110 ancestors and is cut-off event [2021-12-17 22:51:28,210 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2021-12-17 22:51:28,210 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2021-12-17 22:51:28,210 INFO L387 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2021-12-17 22:51:28,305 INFO L129 PetriNetUnfolder]: 12828/21913 cut-off events. [2021-12-17 22:51:28,305 INFO L130 PetriNetUnfolder]: For 33381/39594 co-relation queries the response was YES. [2021-12-17 22:51:28,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61436 conditions, 21913 events. 12828/21913 cut-off events. For 33381/39594 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 178658 event pairs, 1705 based on Foata normal form. 179/20672 useless extension candidates. Maximal degree in co-relation 61413. Up to 5243 conditions per place. [2021-12-17 22:51:28,672 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 91 selfloop transitions, 58 changer transitions 1/270 dead transitions. [2021-12-17 22:51:28,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 270 transitions, 1169 flow [2021-12-17 22:51:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 22:51:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 22:51:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2021-12-17 22:51:28,676 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8163636363636364 [2021-12-17 22:51:28,676 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2021-12-17 22:51:28,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2021-12-17 22:51:28,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:51:28,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2021-12-17 22:51:28,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 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) [2021-12-17 22:51:28,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2021-12-17 22:51:28,683 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 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) [2021-12-17 22:51:28,683 INFO L186 Difference]: Start difference. First operand has 172 places, 166 transitions, 546 flow. Second operand 10 states and 1347 transitions. [2021-12-17 22:51:28,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 270 transitions, 1169 flow [2021-12-17 22:51:28,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 270 transitions, 1113 flow, removed 18 selfloop flow, removed 8 redundant places. [2021-12-17 22:51:28,809 INFO L242 Difference]: Finished difference. Result has 170 places, 210 transitions, 755 flow [2021-12-17 22:51:28,809 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=755, PETRI_PLACES=170, PETRI_TRANSITIONS=210} [2021-12-17 22:51:28,810 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 11 predicate places. [2021-12-17 22:51:28,810 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 210 transitions, 755 flow [2021-12-17 22:51:28,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 124.9) internal successors, (1249), 10 states have internal predecessors, (1249), 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) [2021-12-17 22:51:28,811 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:28,811 INFO L254 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] [2021-12-17 22:51:28,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:51:28,811 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:28,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash -742112923, now seen corresponding path program 4 times [2021-12-17 22:51:28,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:28,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967763976] [2021-12-17 22:51:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:28,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:28,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:28,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967763976] [2021-12-17 22:51:28,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967763976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:28,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:28,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:51:28,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935553253] [2021-12-17 22:51:28,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:28,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:51:28,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:51:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:51:28,961 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-17 22:51:28,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 210 transitions, 755 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 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) [2021-12-17 22:51:28,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:28,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-17 22:51:28,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:51:32,181 INFO L129 PetriNetUnfolder]: 19701/36328 cut-off events. [2021-12-17 22:51:32,182 INFO L130 PetriNetUnfolder]: For 35564/40123 co-relation queries the response was YES. [2021-12-17 22:51:32,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102703 conditions, 36328 events. 19701/36328 cut-off events. For 35564/40123 co-relation queries the response was YES. Maximal size of possible extension queue 2015. Compared 350506 event pairs, 3142 based on Foata normal form. 1042/35528 useless extension candidates. Maximal degree in co-relation 70849. Up to 8593 conditions per place. [2021-12-17 22:51:32,498 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 124 selfloop transitions, 93 changer transitions 0/337 dead transitions. [2021-12-17 22:51:32,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 337 transitions, 1732 flow [2021-12-17 22:51:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 22:51:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-17 22:51:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1092 transitions. [2021-12-17 22:51:32,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8272727272727273 [2021-12-17 22:51:32,502 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1092 transitions. [2021-12-17 22:51:32,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1092 transitions. [2021-12-17 22:51:32,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:51:32,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1092 transitions. [2021-12-17 22:51:32,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.5) internal successors, (1092), 8 states have internal predecessors, (1092), 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) [2021-12-17 22:51:32,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2021-12-17 22:51:32,510 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2021-12-17 22:51:32,510 INFO L186 Difference]: Start difference. First operand has 170 places, 210 transitions, 755 flow. Second operand 8 states and 1092 transitions. [2021-12-17 22:51:32,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 337 transitions, 1732 flow [2021-12-17 22:51:32,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 337 transitions, 1616 flow, removed 53 selfloop flow, removed 3 redundant places. [2021-12-17 22:51:32,577 INFO L242 Difference]: Finished difference. Result has 177 places, 278 transitions, 1369 flow [2021-12-17 22:51:32,578 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1369, PETRI_PLACES=177, PETRI_TRANSITIONS=278} [2021-12-17 22:51:32,578 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 18 predicate places. [2021-12-17 22:51:32,579 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 278 transitions, 1369 flow [2021-12-17 22:51:32,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 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) [2021-12-17 22:51:32,579 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:32,579 INFO L254 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] [2021-12-17 22:51:32,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:51:32,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:32,580 INFO L85 PathProgramCache]: Analyzing trace with hash 844126999, now seen corresponding path program 5 times [2021-12-17 22:51:32,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:32,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503741164] [2021-12-17 22:51:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:32,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:32,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:32,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503741164] [2021-12-17 22:51:32,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503741164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:32,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:32,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:51:32,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789790154] [2021-12-17 22:51:32,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:32,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:51:32,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:51:32,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:51:32,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-17 22:51:32,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 278 transitions, 1369 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2021-12-17 22:51:32,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:32,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-17 22:51:32,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:51:37,185 INFO L129 PetriNetUnfolder]: 24358/46728 cut-off events. [2021-12-17 22:51:37,185 INFO L130 PetriNetUnfolder]: For 79547/85575 co-relation queries the response was YES. [2021-12-17 22:51:37,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152237 conditions, 46728 events. 24358/46728 cut-off events. For 79547/85575 co-relation queries the response was YES. Maximal size of possible extension queue 2792. Compared 489900 event pairs, 5251 based on Foata normal form. 2184/47198 useless extension candidates. Maximal degree in co-relation 102776. Up to 12608 conditions per place. [2021-12-17 22:51:37,661 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 185 selfloop transitions, 97 changer transitions 0/402 dead transitions. [2021-12-17 22:51:37,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 402 transitions, 2711 flow [2021-12-17 22:51:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:51:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:51:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2021-12-17 22:51:37,664 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-12-17 22:51:37,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2021-12-17 22:51:37,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2021-12-17 22:51:37,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:51:37,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2021-12-17 22:51:37,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 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) [2021-12-17 22:51:37,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2021-12-17 22:51:37,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2021-12-17 22:51:37,670 INFO L186 Difference]: Start difference. First operand has 177 places, 278 transitions, 1369 flow. Second operand 7 states and 946 transitions. [2021-12-17 22:51:37,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 402 transitions, 2711 flow [2021-12-17 22:51:38,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 402 transitions, 2680 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-12-17 22:51:38,350 INFO L242 Difference]: Finished difference. Result has 183 places, 347 transitions, 2336 flow [2021-12-17 22:51:38,351 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2336, PETRI_PLACES=183, PETRI_TRANSITIONS=347} [2021-12-17 22:51:38,351 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 24 predicate places. [2021-12-17 22:51:38,352 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 347 transitions, 2336 flow [2021-12-17 22:51:38,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2021-12-17 22:51:38,352 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:38,353 INFO L254 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] [2021-12-17 22:51:38,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 22:51:38,353 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1845190007, now seen corresponding path program 6 times [2021-12-17 22:51:38,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:38,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087871129] [2021-12-17 22:51:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:38,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:38,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087871129] [2021-12-17 22:51:38,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087871129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:38,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:38,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:51:38,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218881582] [2021-12-17 22:51:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:38,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:51:38,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:51:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:51:38,449 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-17 22:51:38,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 347 transitions, 2336 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2021-12-17 22:51:38,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:38,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-17 22:51:38,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:51:43,120 INFO L129 PetriNetUnfolder]: 22882/43991 cut-off events. [2021-12-17 22:51:43,120 INFO L130 PetriNetUnfolder]: For 138192/147788 co-relation queries the response was YES. [2021-12-17 22:51:43,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165317 conditions, 43991 events. 22882/43991 cut-off events. For 138192/147788 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 459403 event pairs, 5495 based on Foata normal form. 3478/45551 useless extension candidates. Maximal degree in co-relation 80202. Up to 12630 conditions per place. [2021-12-17 22:51:43,597 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 183 selfloop transitions, 121 changer transitions 0/423 dead transitions. [2021-12-17 22:51:43,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 423 transitions, 3457 flow [2021-12-17 22:51:43,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:51:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:51:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2021-12-17 22:51:43,600 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8199134199134199 [2021-12-17 22:51:43,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2021-12-17 22:51:43,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2021-12-17 22:51:43,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:51:43,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2021-12-17 22:51:43,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 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) [2021-12-17 22:51:43,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2021-12-17 22:51:43,605 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2021-12-17 22:51:43,605 INFO L186 Difference]: Start difference. First operand has 183 places, 347 transitions, 2336 flow. Second operand 7 states and 947 transitions. [2021-12-17 22:51:43,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 423 transitions, 3457 flow [2021-12-17 22:51:44,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 423 transitions, 3443 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-12-17 22:51:44,217 INFO L242 Difference]: Finished difference. Result has 189 places, 371 transitions, 2953 flow [2021-12-17 22:51:44,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2953, PETRI_PLACES=189, PETRI_TRANSITIONS=371} [2021-12-17 22:51:44,218 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 30 predicate places. [2021-12-17 22:51:44,218 INFO L470 AbstractCegarLoop]: Abstraction has has 189 places, 371 transitions, 2953 flow [2021-12-17 22:51:44,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2021-12-17 22:51:44,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:44,219 INFO L254 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] [2021-12-17 22:51:44,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 22:51:44,220 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash -362038065, now seen corresponding path program 7 times [2021-12-17 22:51:44,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:44,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127586349] [2021-12-17 22:51:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:44,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:44,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:44,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127586349] [2021-12-17 22:51:44,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127586349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:44,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:44,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 22:51:44,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575644424] [2021-12-17 22:51:44,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:44,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 22:51:44,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:44,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 22:51:44,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 22:51:44,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-17 22:51:44,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 371 transitions, 2953 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 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) [2021-12-17 22:51:44,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:44,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-17 22:51:44,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:51:49,047 INFO L129 PetriNetUnfolder]: 22353/42297 cut-off events. [2021-12-17 22:51:49,048 INFO L130 PetriNetUnfolder]: For 193643/203717 co-relation queries the response was YES. [2021-12-17 22:51:49,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177793 conditions, 42297 events. 22353/42297 cut-off events. For 193643/203717 co-relation queries the response was YES. Maximal size of possible extension queue 2667. Compared 432813 event pairs, 3942 based on Foata normal form. 3028/43262 useless extension candidates. Maximal degree in co-relation 117720. Up to 10858 conditions per place. [2021-12-17 22:51:49,500 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 126 selfloop transitions, 221 changer transitions 0/466 dead transitions. [2021-12-17 22:51:49,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 466 transitions, 4377 flow [2021-12-17 22:51:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 22:51:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-17 22:51:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1094 transitions. [2021-12-17 22:51:49,504 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8287878787878787 [2021-12-17 22:51:49,504 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1094 transitions. [2021-12-17 22:51:49,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1094 transitions. [2021-12-17 22:51:49,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:51:49,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1094 transitions. [2021-12-17 22:51:49,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.75) internal successors, (1094), 8 states have internal predecessors, (1094), 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) [2021-12-17 22:51:49,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2021-12-17 22:51:49,510 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 165.0) internal successors, (1485), 9 states have internal predecessors, (1485), 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) [2021-12-17 22:51:49,510 INFO L186 Difference]: Start difference. First operand has 189 places, 371 transitions, 2953 flow. Second operand 8 states and 1094 transitions. [2021-12-17 22:51:49,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 466 transitions, 4377 flow [2021-12-17 22:51:49,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 466 transitions, 4211 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 22:51:49,762 INFO L242 Difference]: Finished difference. Result has 193 places, 406 transitions, 3750 flow [2021-12-17 22:51:49,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3750, PETRI_PLACES=193, PETRI_TRANSITIONS=406} [2021-12-17 22:51:49,763 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 34 predicate places. [2021-12-17 22:51:49,763 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 406 transitions, 3750 flow [2021-12-17 22:51:49,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 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) [2021-12-17 22:51:49,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:49,764 INFO L254 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] [2021-12-17 22:51:49,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 22:51:49,765 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:49,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:49,765 INFO L85 PathProgramCache]: Analyzing trace with hash 364170155, now seen corresponding path program 8 times [2021-12-17 22:51:49,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:49,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649288850] [2021-12-17 22:51:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:49,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:49,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:49,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649288850] [2021-12-17 22:51:49,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649288850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:49,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:49,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:51:49,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301325361] [2021-12-17 22:51:49,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:49,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:51:49,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:49,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:51:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:51:49,888 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-17 22:51:49,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 406 transitions, 3750 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2021-12-17 22:51:49,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:49,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-17 22:51:49,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:51:54,904 INFO L129 PetriNetUnfolder]: 22144/42486 cut-off events. [2021-12-17 22:51:54,904 INFO L130 PetriNetUnfolder]: For 228995/239204 co-relation queries the response was YES. [2021-12-17 22:51:55,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186777 conditions, 42486 events. 22144/42486 cut-off events. For 228995/239204 co-relation queries the response was YES. Maximal size of possible extension queue 2769. Compared 443480 event pairs, 5266 based on Foata normal form. 2847/43319 useless extension candidates. Maximal degree in co-relation 122933. Up to 12441 conditions per place. [2021-12-17 22:51:55,598 INFO L132 encePairwiseOnDemand]: 151/165 looper letters, 188 selfloop transitions, 178 changer transitions 0/484 dead transitions. [2021-12-17 22:51:55,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 484 transitions, 5157 flow [2021-12-17 22:51:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:51:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:51:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2021-12-17 22:51:55,600 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8199134199134199 [2021-12-17 22:51:55,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2021-12-17 22:51:55,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2021-12-17 22:51:55,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:51:55,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2021-12-17 22:51:55,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 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) [2021-12-17 22:51:55,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2021-12-17 22:51:55,606 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 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) [2021-12-17 22:51:55,606 INFO L186 Difference]: Start difference. First operand has 193 places, 406 transitions, 3750 flow. Second operand 7 states and 947 transitions. [2021-12-17 22:51:55,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 484 transitions, 5157 flow [2021-12-17 22:51:55,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 484 transitions, 4838 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-17 22:51:55,824 INFO L242 Difference]: Finished difference. Result has 196 places, 433 transitions, 4369 flow [2021-12-17 22:51:55,825 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4369, PETRI_PLACES=196, PETRI_TRANSITIONS=433} [2021-12-17 22:51:55,825 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 37 predicate places. [2021-12-17 22:51:55,826 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 433 transitions, 4369 flow [2021-12-17 22:51:55,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2021-12-17 22:51:55,826 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:51:55,826 INFO L254 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] [2021-12-17 22:51:55,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 22:51:55,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-12-17 22:51:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:51:55,827 INFO L85 PathProgramCache]: Analyzing trace with hash -23759539, now seen corresponding path program 9 times [2021-12-17 22:51:55,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:51:55,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26354431] [2021-12-17 22:51:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:51:55,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:51:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:51:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:51:55,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:51:55,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26354431] [2021-12-17 22:51:55,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26354431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:51:55,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:51:55,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 22:51:55,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449006490] [2021-12-17 22:51:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:51:55,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 22:51:55,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:51:55,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 22:51:55,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-17 22:51:55,932 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2021-12-17 22:51:55,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 433 transitions, 4369 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 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) [2021-12-17 22:51:55,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:51:55,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2021-12-17 22:51:55,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand