./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.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/popl20-min-max-inc-dec.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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:06:03,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:06:03,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:06:03,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:06:03,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:06:03,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:06:03,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:06:03,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:06:03,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:06:03,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:06:03,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:06:03,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:06:03,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:06:03,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:06:03,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:06:03,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:06:03,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:06:03,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:06:03,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:06:03,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:06:03,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:06:03,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:06:03,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:06:03,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:06:03,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:06:03,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:06:03,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:06:03,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:06:03,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:06:03,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:06:03,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:06:03,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:06:03,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:06:03,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:06:03,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:06:03,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:06:03,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:06:03,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:06:03,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:06:03,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:06:03,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:06:03,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 03:06:03,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:06:03,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:06:03,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:06:03,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:06:03,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:06:03,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:06:03,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:06:03,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:06:03,767 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:06:03,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:06:03,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 03:06:03,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:06:03,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 03:06:03,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:06:03,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:06:03,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:06:03,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:06:03,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 03:06:03,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:06:03,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:06:03,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:06:03,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:06:03,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:06:03,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:06:03,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:06:03,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:06:03,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:06:03,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:06:03,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:06:03,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:06:03,771 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:06:03,771 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:06:03,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:06:03,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:06:03,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f [2021-12-16 03:06:03,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:06:03,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:06:03,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:06:03,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:06:03,987 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:06:03,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2021-12-16 03:06:04,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b6631bb/2ee407297d0c4f91bb594f81906bf5fd/FLAG102f493d4 [2021-12-16 03:06:04,392 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:06:04,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2021-12-16 03:06:04,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b6631bb/2ee407297d0c4f91bb594f81906bf5fd/FLAG102f493d4 [2021-12-16 03:06:04,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b6631bb/2ee407297d0c4f91bb594f81906bf5fd [2021-12-16 03:06:04,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:06:04,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:06:04,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:06:04,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:06:04,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:06:04,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8a9397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04, skipping insertion in model container [2021-12-16 03:06:04,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:06:04,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:06:04,619 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2021-12-16 03:06:04,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:06:04,628 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:06:04,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2021-12-16 03:06:04,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:06:04,666 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:06:04,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04 WrapperNode [2021-12-16 03:06:04,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:06:04,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:06:04,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:06:04,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:06:04,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,694 INFO L137 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 174 [2021-12-16 03:06:04,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:06:04,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:06:04,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:06:04,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:06:04,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:06:04,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:06:04,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:06:04,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:06:04,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (1/1) ... [2021-12-16 03:06:04,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:06:04,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:06:04,754 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) [2021-12-16 03:06:04,755 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 [2021-12-16 03:06:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:06:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:06:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:06:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:06:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 03:06:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 03:06:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 03:06:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 03:06:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-16 03:06:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-16 03:06:04,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-12-16 03:06:04,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-12-16 03:06:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:06:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-12-16 03:06:04,788 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-12-16 03:06:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 03:06:04,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 03:06:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:06:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:06:04,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:06:04,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:06:04,790 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 03:06:04,872 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:06:04,876 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:06:05,111 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:06:05,166 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:06:05,166 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-16 03:06:05,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:06:05 BoogieIcfgContainer [2021-12-16 03:06:05,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:06:05,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:06:05,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:06:05,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:06:05,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:06:04" (1/3) ... [2021-12-16 03:06:05,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f45730f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:06:05, skipping insertion in model container [2021-12-16 03:06:05,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:06:04" (2/3) ... [2021-12-16 03:06:05,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f45730f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:06:05, skipping insertion in model container [2021-12-16 03:06:05,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:06:05" (3/3) ... [2021-12-16 03:06:05,174 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2021-12-16 03:06:05,178 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 03:06:05,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:06:05,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:06:05,179 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 03:06:05,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,207 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,207 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,207 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,207 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,207 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,208 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,208 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,208 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,208 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,208 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,209 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,209 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,210 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,210 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,211 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,223 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,223 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,223 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,223 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,224 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,224 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,224 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,224 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,225 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,225 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,225 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,225 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,225 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,226 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,226 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,227 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,227 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,227 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,227 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,228 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,228 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,228 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,228 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,229 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,229 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,229 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,230 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,230 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,230 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,230 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,230 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,230 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,230 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,231 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,231 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,231 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,231 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,232 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,232 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,234 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,234 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,234 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,234 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,235 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,235 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,235 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,235 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,235 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,240 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,240 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,240 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,240 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,240 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,240 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,240 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,241 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,241 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,241 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,241 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,241 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,242 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,242 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,242 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,243 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,243 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,243 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,243 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,243 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,243 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,243 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,243 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,244 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,245 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,246 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,246 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,246 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,247 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,247 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,250 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,250 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,251 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,251 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,251 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,251 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,251 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,251 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,251 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,252 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~i~2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,252 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,253 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,253 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,253 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,253 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,254 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,254 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,254 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,254 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,255 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,255 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,255 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,255 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,255 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,256 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,256 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,256 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,256 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,256 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,257 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork4_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,257 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,257 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,257 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,257 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,257 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,257 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:06:05,263 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-12-16 03:06:05,302 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:06:05,309 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 [2021-12-16 03:06:05,309 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-16 03:06:05,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 197 places, 195 transitions, 430 flow [2021-12-16 03:06:05,392 INFO L129 PetriNetUnfolder]: 14/190 cut-off events. [2021-12-16 03:06:05,393 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-16 03:06:05,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 190 events. 14/190 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 134 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2021-12-16 03:06:05,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 195 transitions, 430 flow [2021-12-16 03:06:05,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 175 transitions, 380 flow [2021-12-16 03:06:05,437 INFO L129 PetriNetUnfolder]: 14/174 cut-off events. [2021-12-16 03:06:05,437 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-12-16 03:06:05,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:06:05,438 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] [2021-12-16 03:06:05,438 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)] === [2021-12-16 03:06:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:06:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1870663669, now seen corresponding path program 1 times [2021-12-16 03:06:05,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:06:05,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079266219] [2021-12-16 03:06:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:05,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:06:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:06:05,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:06:05,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079266219] [2021-12-16 03:06:05,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079266219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:06:05,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:06:05,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:06:05,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095754532] [2021-12-16 03:06:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:06:05,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:06:05,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:06:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:06:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:06:05,709 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 195 [2021-12-16 03:06:05,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 380 flow. Second operand has 2 states, 2 states have (on average 175.5) internal successors, (351), 2 states have internal predecessors, (351), 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) [2021-12-16 03:06:05,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:06:05,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 195 [2021-12-16 03:06:05,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:06:05,893 INFO L129 PetriNetUnfolder]: 308/1173 cut-off events. [2021-12-16 03:06:05,894 INFO L130 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2021-12-16 03:06:05,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 1173 events. 308/1173 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7407 event pairs, 205 based on Foata normal form. 235/1256 useless extension candidates. Maximal degree in co-relation 1528. Up to 402 conditions per place. [2021-12-16 03:06:05,918 INFO L132 encePairwiseOnDemand]: 186/195 looper letters, 16 selfloop transitions, 0 changer transitions 4/166 dead transitions. [2021-12-16 03:06:05,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 166 transitions, 394 flow [2021-12-16 03:06:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:06:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-16 03:06:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 363 transitions. [2021-12-16 03:06:05,927 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9307692307692308 [2021-12-16 03:06:05,928 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 363 transitions. [2021-12-16 03:06:05,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 363 transitions. [2021-12-16 03:06:05,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:06:05,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 363 transitions. [2021-12-16 03:06:05,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 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) [2021-12-16 03:06:05,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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) [2021-12-16 03:06:05,937 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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) [2021-12-16 03:06:05,938 INFO L186 Difference]: Start difference. First operand has 177 places, 175 transitions, 380 flow. Second operand 2 states and 363 transitions. [2021-12-16 03:06:05,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 166 transitions, 394 flow [2021-12-16 03:06:05,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 166 transitions, 374 flow, removed 0 selfloop flow, removed 10 redundant places. [2021-12-16 03:06:05,944 INFO L242 Difference]: Finished difference. Result has 168 places, 162 transitions, 334 flow [2021-12-16 03:06:05,945 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=334, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2021-12-16 03:06:05,948 INFO L334 CegarLoopForPetriNet]: 177 programPoint places, -9 predicate places. [2021-12-16 03:06:05,948 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 334 flow [2021-12-16 03:06:05,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 175.5) internal successors, (351), 2 states have internal predecessors, (351), 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) [2021-12-16 03:06:05,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:06:05,949 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] [2021-12-16 03:06:05,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:06:05,949 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)] === [2021-12-16 03:06:05,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:06:05,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2114513440, now seen corresponding path program 1 times [2021-12-16 03:06:05,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:06:05,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285746515] [2021-12-16 03:06:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:05,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:06:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:06:06,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:06:06,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285746515] [2021-12-16 03:06:06,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285746515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:06:06,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:06:06,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:06:06,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675223730] [2021-12-16 03:06:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:06:06,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:06:06,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:06:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:06:06,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:06:06,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 195 [2021-12-16 03:06:06,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2021-12-16 03:06:06,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:06:06,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 195 [2021-12-16 03:06:06,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:06:07,748 INFO L129 PetriNetUnfolder]: 8050/15230 cut-off events. [2021-12-16 03:06:07,748 INFO L130 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2021-12-16 03:06:07,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26981 conditions, 15230 events. 8050/15230 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 135615 event pairs, 4677 based on Foata normal form. 0/12261 useless extension candidates. Maximal degree in co-relation 26978. Up to 6422 conditions per place. [2021-12-16 03:06:07,848 INFO L132 encePairwiseOnDemand]: 189/195 looper letters, 60 selfloop transitions, 5 changer transitions 0/181 dead transitions. [2021-12-16 03:06:07,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 181 transitions, 506 flow [2021-12-16 03:06:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:06:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:06:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 876 transitions. [2021-12-16 03:06:07,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7487179487179487 [2021-12-16 03:06:07,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 876 transitions. [2021-12-16 03:06:07,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 876 transitions. [2021-12-16 03:06:07,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:06:07,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 876 transitions. [2021-12-16 03:06:07,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 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) [2021-12-16 03:06:07,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 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) [2021-12-16 03:06:07,859 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 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) [2021-12-16 03:06:07,859 INFO L186 Difference]: Start difference. First operand has 168 places, 162 transitions, 334 flow. Second operand 6 states and 876 transitions. [2021-12-16 03:06:07,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 181 transitions, 506 flow [2021-12-16 03:06:07,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 181 transitions, 506 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:06:07,865 INFO L242 Difference]: Finished difference. Result has 170 places, 163 transitions, 352 flow [2021-12-16 03:06:07,866 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=170, PETRI_TRANSITIONS=163} [2021-12-16 03:06:07,866 INFO L334 CegarLoopForPetriNet]: 177 programPoint places, -7 predicate places. [2021-12-16 03:06:07,866 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 163 transitions, 352 flow [2021-12-16 03:06:07,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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) [2021-12-16 03:06:07,867 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:06:07,867 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] [2021-12-16 03:06:07,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:06:07,867 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)] === [2021-12-16 03:06:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:06:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1927208558, now seen corresponding path program 1 times [2021-12-16 03:06:07,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:06:07,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047630486] [2021-12-16 03:06:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:07,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:06:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:06:07,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:06:07,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047630486] [2021-12-16 03:06:07,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047630486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:06:07,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:06:07,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:06:07,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542024654] [2021-12-16 03:06:07,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:06:07,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:06:07,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:06:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:06:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:06:07,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2021-12-16 03:06:07,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 163 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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) [2021-12-16 03:06:07,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:06:07,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2021-12-16 03:06:07,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:06:09,505 INFO L129 PetriNetUnfolder]: 9579/16177 cut-off events. [2021-12-16 03:06:09,505 INFO L130 PetriNetUnfolder]: For 2270/2270 co-relation queries the response was YES. [2021-12-16 03:06:09,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31815 conditions, 16177 events. 9579/16177 cut-off events. For 2270/2270 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 131503 event pairs, 7218 based on Foata normal form. 249/13682 useless extension candidates. Maximal degree in co-relation 31810. Up to 10634 conditions per place. [2021-12-16 03:06:09,606 INFO L132 encePairwiseOnDemand]: 186/195 looper letters, 41 selfloop transitions, 6 changer transitions 35/202 dead transitions. [2021-12-16 03:06:09,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 202 transitions, 608 flow [2021-12-16 03:06:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:06:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-16 03:06:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1226 transitions. [2021-12-16 03:06:09,609 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7858974358974359 [2021-12-16 03:06:09,609 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1226 transitions. [2021-12-16 03:06:09,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1226 transitions. [2021-12-16 03:06:09,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:06:09,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1226 transitions. [2021-12-16 03:06:09,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.25) internal successors, (1226), 8 states have internal predecessors, (1226), 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) [2021-12-16 03:06:09,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 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) [2021-12-16 03:06:09,614 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 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) [2021-12-16 03:06:09,614 INFO L186 Difference]: Start difference. First operand has 170 places, 163 transitions, 352 flow. Second operand 8 states and 1226 transitions. [2021-12-16 03:06:09,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 202 transitions, 608 flow [2021-12-16 03:06:09,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 202 transitions, 599 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 03:06:09,618 INFO L242 Difference]: Finished difference. Result has 176 places, 164 transitions, 368 flow [2021-12-16 03:06:09,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=176, PETRI_TRANSITIONS=164} [2021-12-16 03:06:09,619 INFO L334 CegarLoopForPetriNet]: 177 programPoint places, -1 predicate places. [2021-12-16 03:06:09,619 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 164 transitions, 368 flow [2021-12-16 03:06:09,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.57142857142858) internal successors, (1033), 7 states have internal predecessors, (1033), 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) [2021-12-16 03:06:09,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:06:09,620 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, 1, 1, 1, 1, 1, 1] [2021-12-16 03:06:09,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:06:09,620 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)] === [2021-12-16 03:06:09,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:06:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1190333191, now seen corresponding path program 1 times [2021-12-16 03:06:09,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:06:09,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756243789] [2021-12-16 03:06:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:09,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:06:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:06:09,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:06:09,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756243789] [2021-12-16 03:06:09,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756243789] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59774669] [2021-12-16 03:06:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:09,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:09,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:06:09,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:06:09,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:06:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:09,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:06:09,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:06:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:06:10,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:06:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:06:10,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59774669] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:10,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:06:10,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-12-16 03:06:10,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319572875] [2021-12-16 03:06:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:06:10,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:06:10,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:06:10,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:06:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:06:10,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2021-12-16 03:06:10,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 164 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 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) [2021-12-16 03:06:10,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:06:10,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2021-12-16 03:06:10,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:06:11,655 INFO L129 PetriNetUnfolder]: 7859/14138 cut-off events. [2021-12-16 03:06:11,655 INFO L130 PetriNetUnfolder]: For 1317/1688 co-relation queries the response was YES. [2021-12-16 03:06:11,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26955 conditions, 14138 events. 7859/14138 cut-off events. For 1317/1688 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 118609 event pairs, 5749 based on Foata normal form. 371/12184 useless extension candidates. Maximal degree in co-relation 26947. Up to 4982 conditions per place. [2021-12-16 03:06:11,746 INFO L132 encePairwiseOnDemand]: 187/195 looper letters, 52 selfloop transitions, 7 changer transitions 0/180 dead transitions. [2021-12-16 03:06:11,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 180 transitions, 526 flow [2021-12-16 03:06:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:06:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:06:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1060 transitions. [2021-12-16 03:06:11,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7765567765567766 [2021-12-16 03:06:11,749 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1060 transitions. [2021-12-16 03:06:11,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1060 transitions. [2021-12-16 03:06:11,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:06:11,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1060 transitions. [2021-12-16 03:06:11,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.42857142857142) internal successors, (1060), 7 states have internal predecessors, (1060), 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) [2021-12-16 03:06:11,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 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) [2021-12-16 03:06:11,754 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 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) [2021-12-16 03:06:11,754 INFO L186 Difference]: Start difference. First operand has 176 places, 164 transitions, 368 flow. Second operand 7 states and 1060 transitions. [2021-12-16 03:06:11,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 180 transitions, 526 flow [2021-12-16 03:06:11,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 180 transitions, 510 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-12-16 03:06:11,760 INFO L242 Difference]: Finished difference. Result has 177 places, 166 transitions, 387 flow [2021-12-16 03:06:11,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=177, PETRI_TRANSITIONS=166} [2021-12-16 03:06:11,761 INFO L334 CegarLoopForPetriNet]: 177 programPoint places, 0 predicate places. [2021-12-16 03:06:11,761 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 166 transitions, 387 flow [2021-12-16 03:06:11,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 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) [2021-12-16 03:06:11,762 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:06:11,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:06:11,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:06:11,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:11,976 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)] === [2021-12-16 03:06:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:06:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2134086853, now seen corresponding path program 1 times [2021-12-16 03:06:11,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:06:11,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395356476] [2021-12-16 03:06:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:11,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:06:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:06:12,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:06:12,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395356476] [2021-12-16 03:06:12,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395356476] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:12,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619270580] [2021-12-16 03:06:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:12,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:12,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:06:12,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:06:12,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:06:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:12,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:06:12,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:06:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:06:12,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:06:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:06:12,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619270580] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:12,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:06:12,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-12-16 03:06:12,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067109446] [2021-12-16 03:06:12,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:06:12,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:06:12,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:06:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:06:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:06:12,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2021-12-16 03:06:12,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 166 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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) [2021-12-16 03:06:12,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:06:12,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2021-12-16 03:06:12,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:06:13,679 INFO L129 PetriNetUnfolder]: 8398/12890 cut-off events. [2021-12-16 03:06:13,680 INFO L130 PetriNetUnfolder]: For 2831/4488 co-relation queries the response was YES. [2021-12-16 03:06:13,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27295 conditions, 12890 events. 8398/12890 cut-off events. For 2831/4488 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 89345 event pairs, 3115 based on Foata normal form. 1657/12787 useless extension candidates. Maximal degree in co-relation 27286. Up to 5611 conditions per place. [2021-12-16 03:06:13,782 INFO L132 encePairwiseOnDemand]: 187/195 looper letters, 54 selfloop transitions, 7 changer transitions 0/182 dead transitions. [2021-12-16 03:06:13,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 555 flow [2021-12-16 03:06:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:06:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:06:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1060 transitions. [2021-12-16 03:06:13,785 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7765567765567766 [2021-12-16 03:06:13,785 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1060 transitions. [2021-12-16 03:06:13,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1060 transitions. [2021-12-16 03:06:13,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:06:13,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1060 transitions. [2021-12-16 03:06:13,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.42857142857142) internal successors, (1060), 7 states have internal predecessors, (1060), 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) [2021-12-16 03:06:13,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 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) [2021-12-16 03:06:13,789 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 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) [2021-12-16 03:06:13,789 INFO L186 Difference]: Start difference. First operand has 177 places, 166 transitions, 387 flow. Second operand 7 states and 1060 transitions. [2021-12-16 03:06:13,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 555 flow [2021-12-16 03:06:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 182 transitions, 546 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 03:06:13,793 INFO L242 Difference]: Finished difference. Result has 181 places, 167 transitions, 406 flow [2021-12-16 03:06:13,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=181, PETRI_TRANSITIONS=167} [2021-12-16 03:06:13,796 INFO L334 CegarLoopForPetriNet]: 177 programPoint places, 4 predicate places. [2021-12-16 03:06:13,796 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 167 transitions, 406 flow [2021-12-16 03:06:13,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 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) [2021-12-16 03:06:13,797 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:06:13,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:06:13,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:06:14,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:14,002 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)] === [2021-12-16 03:06:14,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:06:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash 308230845, now seen corresponding path program 1 times [2021-12-16 03:06:14,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:06:14,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341236626] [2021-12-16 03:06:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:14,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:06:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:06:14,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:06:14,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341236626] [2021-12-16 03:06:14,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341236626] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:14,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204557488] [2021-12-16 03:06:14,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:14,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:14,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:06:14,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:06:14,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:06:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:14,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:06:14,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:06:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:06:14,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:06:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:06:14,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204557488] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:14,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:06:14,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 7] total 14 [2021-12-16 03:06:14,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783012535] [2021-12-16 03:06:14,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:06:14,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:06:14,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:06:14,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:06:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:06:14,708 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 195 [2021-12-16 03:06:14,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 167 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 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) [2021-12-16 03:06:14,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:06:14,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 195 [2021-12-16 03:06:14,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:06:15,962 INFO L129 PetriNetUnfolder]: 8242/16357 cut-off events. [2021-12-16 03:06:15,962 INFO L130 PetriNetUnfolder]: For 5462/8567 co-relation queries the response was YES. [2021-12-16 03:06:16,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32389 conditions, 16357 events. 8242/16357 cut-off events. For 5462/8567 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 150366 event pairs, 3210 based on Foata normal form. 3105/18886 useless extension candidates. Maximal degree in co-relation 32378. Up to 6073 conditions per place. [2021-12-16 03:06:16,062 INFO L132 encePairwiseOnDemand]: 187/195 looper letters, 57 selfloop transitions, 7 changer transitions 0/185 dead transitions. [2021-12-16 03:06:16,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 185 transitions, 591 flow [2021-12-16 03:06:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:06:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:06:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1061 transitions. [2021-12-16 03:06:16,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7772893772893773 [2021-12-16 03:06:16,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1061 transitions. [2021-12-16 03:06:16,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1061 transitions. [2021-12-16 03:06:16,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:06:16,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1061 transitions. [2021-12-16 03:06:16,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.57142857142858) internal successors, (1061), 7 states have internal predecessors, (1061), 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) [2021-12-16 03:06:16,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 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) [2021-12-16 03:06:16,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 195.0) internal successors, (1560), 8 states have internal predecessors, (1560), 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) [2021-12-16 03:06:16,069 INFO L186 Difference]: Start difference. First operand has 181 places, 167 transitions, 406 flow. Second operand 7 states and 1061 transitions. [2021-12-16 03:06:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 185 transitions, 591 flow [2021-12-16 03:06:16,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 185 transitions, 580 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-16 03:06:16,073 INFO L242 Difference]: Finished difference. Result has 184 places, 168 transitions, 423 flow [2021-12-16 03:06:16,073 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=184, PETRI_TRANSITIONS=168} [2021-12-16 03:06:16,073 INFO L334 CegarLoopForPetriNet]: 177 programPoint places, 7 predicate places. [2021-12-16 03:06:16,074 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 168 transitions, 423 flow [2021-12-16 03:06:16,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 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) [2021-12-16 03:06:16,074 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:06:16,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:06:16,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:06:16,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:16,292 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)] === [2021-12-16 03:06:16,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:06:16,292 INFO L85 PathProgramCache]: Analyzing trace with hash 25711741, now seen corresponding path program 1 times [2021-12-16 03:06:16,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:06:16,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741480451] [2021-12-16 03:06:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:16,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:06:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:06:16,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:06:16,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741480451] [2021-12-16 03:06:16,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741480451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:16,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506028116] [2021-12-16 03:06:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:16,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:16,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:06:16,640 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:06:16,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:06:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:16,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-16 03:06:16,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:06:17,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 03:06:17,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:06:17,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:06:17,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:06:17,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:06:17,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 03:06:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:06:17,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:06:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:06:18,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506028116] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:18,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:06:18,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 24] total 35 [2021-12-16 03:06:18,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616227737] [2021-12-16 03:06:18,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:06:18,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:06:18,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:06:18,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:06:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1044, Unknown=0, NotChecked=0, Total=1190 [2021-12-16 03:06:18,451 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 195 [2021-12-16 03:06:18,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 168 transitions, 423 flow. Second operand has 10 states, 10 states have (on average 126.1) internal successors, (1261), 10 states have internal predecessors, (1261), 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) [2021-12-16 03:06:18,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:06:18,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 195 [2021-12-16 03:06:18,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:06:26,246 INFO L129 PetriNetUnfolder]: 45097/80546 cut-off events. [2021-12-16 03:06:26,247 INFO L130 PetriNetUnfolder]: For 30602/30602 co-relation queries the response was YES. [2021-12-16 03:06:26,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168840 conditions, 80546 events. 45097/80546 cut-off events. For 30602/30602 co-relation queries the response was YES. Maximal size of possible extension queue 3356. Compared 807987 event pairs, 8444 based on Foata normal form. 2/78517 useless extension candidates. Maximal degree in co-relation 168827. Up to 17019 conditions per place. [2021-12-16 03:06:27,022 INFO L132 encePairwiseOnDemand]: 179/195 looper letters, 256 selfloop transitions, 38 changer transitions 12/411 dead transitions. [2021-12-16 03:06:27,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 411 transitions, 1757 flow [2021-12-16 03:06:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 03:06:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-16 03:06:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2092 transitions. [2021-12-16 03:06:27,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7152136752136752 [2021-12-16 03:06:27,027 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2092 transitions. [2021-12-16 03:06:27,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2092 transitions. [2021-12-16 03:06:27,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:06:27,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2092 transitions. [2021-12-16 03:06:27,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 139.46666666666667) internal successors, (2092), 15 states have internal predecessors, (2092), 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) [2021-12-16 03:06:27,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 195.0) internal successors, (3120), 16 states have internal predecessors, (3120), 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) [2021-12-16 03:06:27,035 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 195.0) internal successors, (3120), 16 states have internal predecessors, (3120), 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) [2021-12-16 03:06:27,035 INFO L186 Difference]: Start difference. First operand has 184 places, 168 transitions, 423 flow. Second operand 15 states and 2092 transitions. [2021-12-16 03:06:27,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 411 transitions, 1757 flow [2021-12-16 03:06:27,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 411 transitions, 1747 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-16 03:06:27,339 INFO L242 Difference]: Finished difference. Result has 207 places, 209 transitions, 719 flow [2021-12-16 03:06:27,340 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=719, PETRI_PLACES=207, PETRI_TRANSITIONS=209} [2021-12-16 03:06:27,340 INFO L334 CegarLoopForPetriNet]: 177 programPoint places, 30 predicate places. [2021-12-16 03:06:27,340 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 209 transitions, 719 flow [2021-12-16 03:06:27,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 126.1) internal successors, (1261), 10 states have internal predecessors, (1261), 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) [2021-12-16 03:06:27,342 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:06:27,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:06:27,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:06:27,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:27,560 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)] === [2021-12-16 03:06:27,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:06:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash 767542747, now seen corresponding path program 2 times [2021-12-16 03:06:27,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:06:27,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779158234] [2021-12-16 03:06:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:06:27,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:06:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:06:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 03:06:27,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:06:27,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779158234] [2021-12-16 03:06:27,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779158234] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:06:27,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589353717] [2021-12-16 03:06:27,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:06:27,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:06:27,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:06:27,984 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:06:27,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:06:28,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:06:28,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:06:28,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-16 03:06:28,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:06:28,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-16 03:06:28,158 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 03:06:28,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2021-12-16 03:06:28,187 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 03:06:28,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-16 03:06:28,236 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 03:06:28,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-16 03:06:28,414 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 03:06:28,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-16 03:06:28,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-16 03:06:28,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:06:28,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-16 03:06:28,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 03:06:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:06:28,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:06:29,339 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_348 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_348) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 (+ .cse0 1)) (<= 2147483647 .cse0)))) is different from false [2021-12-16 03:06:29,412 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_348 (Array Int Int)) (v_ArrVal_347 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_347) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_348) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (<= c_~min~0 (+ .cse0 1))))) is different from false [2021-12-16 03:06:29,504 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_348 (Array Int Int)) (v_ArrVal_347 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_347) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_348) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (let ((.cse2 (+ .cse0 1)) (.cse1 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4))))) (and (or (<= .cse1 .cse2) (< c_~min~0 .cse1)) (or (<= c_~min~0 .cse2) (<= .cse1 c_~min~0))))))) is different from false [2021-12-16 03:06:29,553 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_348 (Array Int Int)) (v_ArrVal_347 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_347) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_348) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (let ((.cse2 (+ .cse0 1)) (.cse1 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (or (<= .cse1 .cse2) (< c_~min~0 .cse1)) (or (<= c_~min~0 .cse2) (<= .cse1 c_~min~0))))))) is different from false [2021-12-16 03:06:29,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2021-12-16 03:06:29,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-12-16 03:06:29,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2021-12-16 03:06:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2021-12-16 03:06:30,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589353717] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:06:30,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:06:30,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 43 [2021-12-16 03:06:30,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125007792] [2021-12-16 03:06:30,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:06:30,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-16 03:06:30,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:06:30,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-16 03:06:30,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1332, Unknown=4, NotChecked=308, Total=1806 [2021-12-16 03:06:30,164 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 195 [2021-12-16 03:06:30,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 209 transitions, 719 flow. Second operand has 43 states, 43 states have (on average 99.6046511627907) internal successors, (4283), 43 states have internal predecessors, (4283), 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) [2021-12-16 03:06:30,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:06:30,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 195 [2021-12-16 03:06:30,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand