./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-threaded-sum-3.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 a12f7bc3d94ecbf6fd25030121af7b8c4b258a536df3d333f191aa6387ec429b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:08:35,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:08:35,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:08:35,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:08:35,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:08:35,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:08:35,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:08:35,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:08:35,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:08:35,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:08:35,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:08:35,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:08:35,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:08:35,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:08:35,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:08:35,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:08:35,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:08:35,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:08:35,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:08:35,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:08:35,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:08:35,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:08:35,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:08:35,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:08:35,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:08:35,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:08:35,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:08:35,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:08:35,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:08:35,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:08:35,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:08:35,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:08:35,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:08:35,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:08:35,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:08:35,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:08:35,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:08:35,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:08:35,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:08:35,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:08:35,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:08:35,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 03:08:35,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:08:35,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:08:35,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:08:35,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:08:35,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:08:35,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:08:35,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:08:35,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:08:35,706 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:08:35,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:08:35,706 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 03:08:35,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:08:35,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 03:08:35,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:08:35,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:08:35,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:08:35,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:08:35,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 03:08:35,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:08:35,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:08:35,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:08:35,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:08:35,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:08:35,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:08:35,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:08:35,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:08:35,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:08:35,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:08:35,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:08:35,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:08:35,709 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:08:35,709 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:08:35,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:08:35,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a12f7bc3d94ecbf6fd25030121af7b8c4b258a536df3d333f191aa6387ec429b [2021-12-28 03:08:35,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:08:36,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:08:36,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:08:36,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:08:36,027 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:08:36,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2021-12-28 03:08:36,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d0cb4e0/1794d5c253ea4ffebfecf6f60b74e69e/FLAG17567d2c0 [2021-12-28 03:08:36,485 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:08:36,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-threaded-sum-3.wvr.c [2021-12-28 03:08:36,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d0cb4e0/1794d5c253ea4ffebfecf6f60b74e69e/FLAG17567d2c0 [2021-12-28 03:08:36,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33d0cb4e0/1794d5c253ea4ffebfecf6f60b74e69e [2021-12-28 03:08:36,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:08:36,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:08:36,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:08:36,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:08:36,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:08:36,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a19f495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36, skipping insertion in model container [2021-12-28 03:08:36,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:08:36,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:08:36,693 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-threaded-sum-3.wvr.c[2957,2970] [2021-12-28 03:08:36,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:08:36,702 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:08:36,739 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-threaded-sum-3.wvr.c[2957,2970] [2021-12-28 03:08:36,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:08:36,753 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:08:36,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36 WrapperNode [2021-12-28 03:08:36,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:08:36,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:08:36,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:08:36,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:08:36,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,793 INFO L137 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2021-12-28 03:08:36,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:08:36,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:08:36,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:08:36,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:08:36,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:08:36,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:08:36,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:08:36,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:08:36,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (1/1) ... [2021-12-28 03:08:36,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:08:36,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:08:36,868 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) [2021-12-28 03:08:36,903 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 [2021-12-28 03:08:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:08:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-28 03:08:36,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-28 03:08:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-28 03:08:36,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-28 03:08:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-28 03:08:36,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-28 03:08:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:08:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:08:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:08:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 03:08:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 03:08:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:08:36,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:08:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:08:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:08:36,910 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 03:08:36,984 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:08:36,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:08:37,187 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:08:37,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:08:37,235 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-28 03:08:37,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:08:37 BoogieIcfgContainer [2021-12-28 03:08:37,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:08:37,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:08:37,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:08:37,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:08:37,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:08:36" (1/3) ... [2021-12-28 03:08:37,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4238ac32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:08:37, skipping insertion in model container [2021-12-28 03:08:37,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:08:36" (2/3) ... [2021-12-28 03:08:37,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4238ac32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:08:37, skipping insertion in model container [2021-12-28 03:08:37,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:08:37" (3/3) ... [2021-12-28 03:08:37,247 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2021-12-28 03:08:37,253 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 03:08:37,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:08:37,254 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:08:37,254 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 03:08:37,311 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,314 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,316 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,317 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,320 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,322 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,323 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,324 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,325 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,326 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,327 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,328 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,330 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,332 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,333 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,334 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,335 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,337 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,337 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,337 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,337 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,338 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,339 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,340 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,341 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,342 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,342 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,342 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,344 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,344 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,344 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,344 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,344 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,345 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,345 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,345 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,345 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,346 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,346 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,346 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,350 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,351 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,351 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,352 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,356 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:08:37,358 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-28 03:08:37,390 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:08:37,395 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 [2021-12-28 03:08:37,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 03:08:37,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 115 transitions, 254 flow [2021-12-28 03:08:37,481 INFO L129 PetriNetUnfolder]: 8/112 cut-off events. [2021-12-28 03:08:37,482 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:08:37,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 8/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2021-12-28 03:08:37,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 115 transitions, 254 flow [2021-12-28 03:08:37,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 101 transitions, 220 flow [2021-12-28 03:08:37,521 INFO L129 PetriNetUnfolder]: 8/100 cut-off events. [2021-12-28 03:08:37,521 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:08:37,522 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:37,523 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] [2021-12-28 03:08:37,523 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1016748740, now seen corresponding path program 1 times [2021-12-28 03:08:37,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:37,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415259602] [2021-12-28 03:08:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:37,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:38,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:38,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415259602] [2021-12-28 03:08:38,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415259602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:08:38,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:08:38,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:08:38,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37310163] [2021-12-28 03:08:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:08:38,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:08:38,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:08:38,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:08:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:08:38,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 115 [2021-12-28 03:08:38,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2021-12-28 03:08:38,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:08:38,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 115 [2021-12-28 03:08:38,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:08:38,701 INFO L129 PetriNetUnfolder]: 301/767 cut-off events. [2021-12-28 03:08:38,701 INFO L130 PetriNetUnfolder]: For 98/109 co-relation queries the response was YES. [2021-12-28 03:08:38,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 767 events. 301/767 cut-off events. For 98/109 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4077 event pairs, 77 based on Foata normal form. 89/756 useless extension candidates. Maximal degree in co-relation 1120. Up to 310 conditions per place. [2021-12-28 03:08:38,712 INFO L132 encePairwiseOnDemand]: 100/115 looper letters, 54 selfloop transitions, 11 changer transitions 2/123 dead transitions. [2021-12-28 03:08:38,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 416 flow [2021-12-28 03:08:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:08:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-28 03:08:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2021-12-28 03:08:38,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6891304347826087 [2021-12-28 03:08:38,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2021-12-28 03:08:38,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2021-12-28 03:08:38,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:08:38,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2021-12-28 03:08:38,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 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) [2021-12-28 03:08:38,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 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) [2021-12-28 03:08:38,745 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 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) [2021-12-28 03:08:38,747 INFO L186 Difference]: Start difference. First operand has 103 places, 101 transitions, 220 flow. Second operand 8 states and 634 transitions. [2021-12-28 03:08:38,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 416 flow [2021-12-28 03:08:38,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 123 transitions, 392 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-28 03:08:38,758 INFO L242 Difference]: Finished difference. Result has 107 places, 101 transitions, 260 flow [2021-12-28 03:08:38,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=260, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2021-12-28 03:08:38,763 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2021-12-28 03:08:38,764 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 260 flow [2021-12-28 03:08:38,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2021-12-28 03:08:38,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:38,764 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:08:38,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:08:38,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1082138286, now seen corresponding path program 1 times [2021-12-28 03:08:38,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:38,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730123960] [2021-12-28 03:08:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:38,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:39,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:39,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:39,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730123960] [2021-12-28 03:08:39,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730123960] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:08:39,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022284278] [2021-12-28 03:08:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:39,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:08:39,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:08:39,047 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) [2021-12-28 03:08:39,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:08:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:39,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-28 03:08:39,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:08:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:39,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:08:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:39,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022284278] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:08:39,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:08:39,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 19 [2021-12-28 03:08:39,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641076182] [2021-12-28 03:08:39,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:08:39,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:08:39,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:08:39,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:08:39,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:08:39,762 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 115 [2021-12-28 03:08:39,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 260 flow. Second operand has 19 states, 19 states have (on average 73.05263157894737) internal successors, (1388), 19 states have internal predecessors, (1388), 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) [2021-12-28 03:08:39,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:08:39,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 115 [2021-12-28 03:08:39,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:08:40,345 INFO L129 PetriNetUnfolder]: 467/1001 cut-off events. [2021-12-28 03:08:40,345 INFO L130 PetriNetUnfolder]: For 497/516 co-relation queries the response was YES. [2021-12-28 03:08:40,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1001 events. 467/1001 cut-off events. For 497/516 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5058 event pairs, 13 based on Foata normal form. 43/980 useless extension candidates. Maximal degree in co-relation 1684. Up to 227 conditions per place. [2021-12-28 03:08:40,353 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 77 selfloop transitions, 25 changer transitions 0/159 dead transitions. [2021-12-28 03:08:40,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 159 transitions, 655 flow [2021-12-28 03:08:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 03:08:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-28 03:08:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1079 transitions. [2021-12-28 03:08:40,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6701863354037267 [2021-12-28 03:08:40,357 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1079 transitions. [2021-12-28 03:08:40,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1079 transitions. [2021-12-28 03:08:40,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:08:40,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1079 transitions. [2021-12-28 03:08:40,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 77.07142857142857) internal successors, (1079), 14 states have internal predecessors, (1079), 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) [2021-12-28 03:08:40,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2021-12-28 03:08:40,363 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2021-12-28 03:08:40,370 INFO L186 Difference]: Start difference. First operand has 107 places, 101 transitions, 260 flow. Second operand 14 states and 1079 transitions. [2021-12-28 03:08:40,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 159 transitions, 655 flow [2021-12-28 03:08:40,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 159 transitions, 643 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-28 03:08:40,377 INFO L242 Difference]: Finished difference. Result has 121 places, 113 transitions, 408 flow [2021-12-28 03:08:40,377 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=408, PETRI_PLACES=121, PETRI_TRANSITIONS=113} [2021-12-28 03:08:40,378 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 18 predicate places. [2021-12-28 03:08:40,378 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 113 transitions, 408 flow [2021-12-28 03:08:40,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 73.05263157894737) internal successors, (1388), 19 states have internal predecessors, (1388), 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) [2021-12-28 03:08:40,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:40,379 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] [2021-12-28 03:08:40,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:08:40,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:08:40,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:40,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash -958633325, now seen corresponding path program 1 times [2021-12-28 03:08:40,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:40,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598948169] [2021-12-28 03:08:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:40,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:40,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:40,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598948169] [2021-12-28 03:08:40,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598948169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:08:40,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:08:40,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:08:40,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706617631] [2021-12-28 03:08:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:08:40,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:08:40,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:08:40,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:08:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:08:40,799 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2021-12-28 03:08:40,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 113 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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) [2021-12-28 03:08:40,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:08:40,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2021-12-28 03:08:40,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:08:41,630 INFO L129 PetriNetUnfolder]: 2345/4747 cut-off events. [2021-12-28 03:08:41,630 INFO L130 PetriNetUnfolder]: For 9265/9268 co-relation queries the response was YES. [2021-12-28 03:08:41,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14428 conditions, 4747 events. 2345/4747 cut-off events. For 9265/9268 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 34780 event pairs, 160 based on Foata normal form. 1/4287 useless extension candidates. Maximal degree in co-relation 12058. Up to 1093 conditions per place. [2021-12-28 03:08:41,664 INFO L132 encePairwiseOnDemand]: 102/115 looper letters, 177 selfloop transitions, 105 changer transitions 0/350 dead transitions. [2021-12-28 03:08:41,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 350 transitions, 2451 flow [2021-12-28 03:08:41,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 03:08:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-28 03:08:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1329 transitions. [2021-12-28 03:08:41,668 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8254658385093168 [2021-12-28 03:08:41,668 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1329 transitions. [2021-12-28 03:08:41,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1329 transitions. [2021-12-28 03:08:41,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:08:41,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1329 transitions. [2021-12-28 03:08:41,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.92857142857143) internal successors, (1329), 14 states have internal predecessors, (1329), 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) [2021-12-28 03:08:41,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2021-12-28 03:08:41,673 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 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) [2021-12-28 03:08:41,673 INFO L186 Difference]: Start difference. First operand has 121 places, 113 transitions, 408 flow. Second operand 14 states and 1329 transitions. [2021-12-28 03:08:41,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 350 transitions, 2451 flow [2021-12-28 03:08:41,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 350 transitions, 2311 flow, removed 61 selfloop flow, removed 6 redundant places. [2021-12-28 03:08:41,699 INFO L242 Difference]: Finished difference. Result has 139 places, 226 transitions, 1697 flow [2021-12-28 03:08:41,700 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1697, PETRI_PLACES=139, PETRI_TRANSITIONS=226} [2021-12-28 03:08:41,701 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 36 predicate places. [2021-12-28 03:08:41,702 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 226 transitions, 1697 flow [2021-12-28 03:08:41,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 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) [2021-12-28 03:08:41,703 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:41,703 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] [2021-12-28 03:08:41,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:08:41,704 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:41,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1199619273, now seen corresponding path program 2 times [2021-12-28 03:08:41,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:41,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068502655] [2021-12-28 03:08:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:41,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:41,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:41,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068502655] [2021-12-28 03:08:41,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068502655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:08:41,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:08:41,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:08:41,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278797087] [2021-12-28 03:08:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:08:41,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:08:41,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:08:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:08:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:08:41,966 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2021-12-28 03:08:41,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 226 transitions, 1697 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-12-28 03:08:41,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:08:41,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2021-12-28 03:08:41,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:08:42,519 INFO L129 PetriNetUnfolder]: 1521/3597 cut-off events. [2021-12-28 03:08:42,520 INFO L130 PetriNetUnfolder]: For 24796/25093 co-relation queries the response was YES. [2021-12-28 03:08:42,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16497 conditions, 3597 events. 1521/3597 cut-off events. For 24796/25093 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28255 event pairs, 138 based on Foata normal form. 85/3442 useless extension candidates. Maximal degree in co-relation 13499. Up to 1192 conditions per place. [2021-12-28 03:08:42,567 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 229 selfloop transitions, 64 changer transitions 0/363 dead transitions. [2021-12-28 03:08:42,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 363 transitions, 3794 flow [2021-12-28 03:08:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:08:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-28 03:08:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 655 transitions. [2021-12-28 03:08:42,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7119565217391305 [2021-12-28 03:08:42,570 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 655 transitions. [2021-12-28 03:08:42,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 655 transitions. [2021-12-28 03:08:42,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:08:42,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 655 transitions. [2021-12-28 03:08:42,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.875) internal successors, (655), 8 states have internal predecessors, (655), 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) [2021-12-28 03:08:42,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 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) [2021-12-28 03:08:42,573 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 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) [2021-12-28 03:08:42,573 INFO L186 Difference]: Start difference. First operand has 139 places, 226 transitions, 1697 flow. Second operand 8 states and 655 transitions. [2021-12-28 03:08:42,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 363 transitions, 3794 flow [2021-12-28 03:08:42,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 363 transitions, 3592 flow, removed 101 selfloop flow, removed 0 redundant places. [2021-12-28 03:08:42,637 INFO L242 Difference]: Finished difference. Result has 149 places, 269 transitions, 2403 flow [2021-12-28 03:08:42,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2403, PETRI_PLACES=149, PETRI_TRANSITIONS=269} [2021-12-28 03:08:42,639 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 46 predicate places. [2021-12-28 03:08:42,641 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 269 transitions, 2403 flow [2021-12-28 03:08:42,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-12-28 03:08:42,642 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:42,642 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] [2021-12-28 03:08:42,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:08:42,642 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:42,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 82552129, now seen corresponding path program 1 times [2021-12-28 03:08:42,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:42,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184230182] [2021-12-28 03:08:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:42,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:42,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:42,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184230182] [2021-12-28 03:08:42,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184230182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:08:42,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:08:42,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:08:42,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459778070] [2021-12-28 03:08:42,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:08:42,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:08:42,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:08:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:08:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:08:42,827 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2021-12-28 03:08:42,828 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 269 transitions, 2403 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2021-12-28 03:08:42,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:08:42,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2021-12-28 03:08:42,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:08:44,885 INFO L129 PetriNetUnfolder]: 7039/14185 cut-off events. [2021-12-28 03:08:44,885 INFO L130 PetriNetUnfolder]: For 107585/107721 co-relation queries the response was YES. [2021-12-28 03:08:44,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65272 conditions, 14185 events. 7039/14185 cut-off events. For 107585/107721 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 124460 event pairs, 725 based on Foata normal form. 165/13643 useless extension candidates. Maximal degree in co-relation 55465. Up to 3064 conditions per place. [2021-12-28 03:08:45,079 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 330 selfloop transitions, 195 changer transitions 0/595 dead transitions. [2021-12-28 03:08:45,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 595 transitions, 7400 flow [2021-12-28 03:08:45,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 03:08:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-28 03:08:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1455 transitions. [2021-12-28 03:08:45,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2021-12-28 03:08:45,084 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1455 transitions. [2021-12-28 03:08:45,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1455 transitions. [2021-12-28 03:08:45,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:08:45,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1455 transitions. [2021-12-28 03:08:45,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 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) [2021-12-28 03:08:45,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 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) [2021-12-28 03:08:45,091 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 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) [2021-12-28 03:08:45,091 INFO L186 Difference]: Start difference. First operand has 149 places, 269 transitions, 2403 flow. Second operand 15 states and 1455 transitions. [2021-12-28 03:08:45,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 595 transitions, 7400 flow [2021-12-28 03:08:45,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 595 transitions, 7259 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-12-28 03:08:45,401 INFO L242 Difference]: Finished difference. Result has 171 places, 413 transitions, 5270 flow [2021-12-28 03:08:45,401 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5270, PETRI_PLACES=171, PETRI_TRANSITIONS=413} [2021-12-28 03:08:45,403 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 68 predicate places. [2021-12-28 03:08:45,403 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 413 transitions, 5270 flow [2021-12-28 03:08:45,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 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) [2021-12-28 03:08:45,404 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:45,404 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] [2021-12-28 03:08:45,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:08:45,404 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:45,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash 393902587, now seen corresponding path program 2 times [2021-12-28 03:08:45,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:45,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938508106] [2021-12-28 03:08:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:45,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:45,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:45,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938508106] [2021-12-28 03:08:45,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938508106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:08:45,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:08:45,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:08:45,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999498796] [2021-12-28 03:08:45,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:08:45,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:08:45,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:08:45,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:08:45,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:08:45,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2021-12-28 03:08:45,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 413 transitions, 5270 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2021-12-28 03:08:45,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:08:45,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2021-12-28 03:08:45,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:08:47,586 INFO L129 PetriNetUnfolder]: 7953/14769 cut-off events. [2021-12-28 03:08:47,587 INFO L130 PetriNetUnfolder]: For 180952/181184 co-relation queries the response was YES. [2021-12-28 03:08:47,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84549 conditions, 14769 events. 7953/14769 cut-off events. For 180952/181184 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 124086 event pairs, 2073 based on Foata normal form. 27/13880 useless extension candidates. Maximal degree in co-relation 72609. Up to 9122 conditions per place. [2021-12-28 03:08:47,750 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 369 selfloop transitions, 99 changer transitions 9/557 dead transitions. [2021-12-28 03:08:47,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 557 transitions, 8362 flow [2021-12-28 03:08:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:08:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-28 03:08:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2021-12-28 03:08:47,753 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-12-28 03:08:47,753 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2021-12-28 03:08:47,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2021-12-28 03:08:47,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:08:47,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2021-12-28 03:08:47,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 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) [2021-12-28 03:08:47,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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) [2021-12-28 03:08:47,756 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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) [2021-12-28 03:08:47,756 INFO L186 Difference]: Start difference. First operand has 171 places, 413 transitions, 5270 flow. Second operand 6 states and 575 transitions. [2021-12-28 03:08:47,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 557 transitions, 8362 flow [2021-12-28 03:08:48,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 557 transitions, 8026 flow, removed 168 selfloop flow, removed 0 redundant places. [2021-12-28 03:08:48,388 INFO L242 Difference]: Finished difference. Result has 180 places, 443 transitions, 5809 flow [2021-12-28 03:08:48,389 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5809, PETRI_PLACES=180, PETRI_TRANSITIONS=443} [2021-12-28 03:08:48,389 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 77 predicate places. [2021-12-28 03:08:48,390 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 443 transitions, 5809 flow [2021-12-28 03:08:48,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2021-12-28 03:08:48,390 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:48,390 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] [2021-12-28 03:08:48,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:08:48,391 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:48,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1596044119, now seen corresponding path program 3 times [2021-12-28 03:08:48,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:48,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803084443] [2021-12-28 03:08:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:48,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:48,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:48,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803084443] [2021-12-28 03:08:48,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803084443] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:08:48,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114683333] [2021-12-28 03:08:48,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:08:48,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:08:48,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:08:48,522 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) [2021-12-28 03:08:48,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:08:48,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-28 03:08:48,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:08:48,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-28 03:08:48,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:08:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:48,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:08:48,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114683333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:08:48,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:08:48,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2021-12-28 03:08:48,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144451784] [2021-12-28 03:08:48,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:08:48,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 03:08:48,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:08:48,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 03:08:48,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-28 03:08:48,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 115 [2021-12-28 03:08:48,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 443 transitions, 5809 flow. Second operand has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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) [2021-12-28 03:08:48,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:08:48,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 115 [2021-12-28 03:08:48,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:08:52,063 INFO L129 PetriNetUnfolder]: 10546/18925 cut-off events. [2021-12-28 03:08:52,063 INFO L130 PetriNetUnfolder]: For 257457/257799 co-relation queries the response was YES. [2021-12-28 03:08:52,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115658 conditions, 18925 events. 10546/18925 cut-off events. For 257457/257799 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 159996 event pairs, 2288 based on Foata normal form. 576/19283 useless extension candidates. Maximal degree in co-relation 101677. Up to 10517 conditions per place. [2021-12-28 03:08:52,328 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 607 selfloop transitions, 107 changer transitions 3/785 dead transitions. [2021-12-28 03:08:52,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 785 transitions, 12170 flow [2021-12-28 03:08:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:08:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 03:08:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1032 transitions. [2021-12-28 03:08:52,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6903010033444816 [2021-12-28 03:08:52,331 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1032 transitions. [2021-12-28 03:08:52,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1032 transitions. [2021-12-28 03:08:52,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:08:52,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1032 transitions. [2021-12-28 03:08:52,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.38461538461539) internal successors, (1032), 13 states have internal predecessors, (1032), 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) [2021-12-28 03:08:52,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 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) [2021-12-28 03:08:52,338 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 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) [2021-12-28 03:08:52,338 INFO L186 Difference]: Start difference. First operand has 180 places, 443 transitions, 5809 flow. Second operand 13 states and 1032 transitions. [2021-12-28 03:08:52,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 785 transitions, 12170 flow [2021-12-28 03:08:53,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 785 transitions, 11943 flow, removed 26 selfloop flow, removed 1 redundant places. [2021-12-28 03:08:53,296 INFO L242 Difference]: Finished difference. Result has 198 places, 511 transitions, 6996 flow [2021-12-28 03:08:53,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6996, PETRI_PLACES=198, PETRI_TRANSITIONS=511} [2021-12-28 03:08:53,297 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 95 predicate places. [2021-12-28 03:08:53,297 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 511 transitions, 6996 flow [2021-12-28 03:08:53,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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) [2021-12-28 03:08:53,298 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:53,298 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] [2021-12-28 03:08:53,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:08:53,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-28 03:08:53,510 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:53,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash 209813985, now seen corresponding path program 4 times [2021-12-28 03:08:53,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:53,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75316346] [2021-12-28 03:08:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:53,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:08:55,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:55,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75316346] [2021-12-28 03:08:55,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75316346] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:08:55,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42470299] [2021-12-28 03:08:55,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:08:55,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:08:55,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:08:55,513 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) [2021-12-28 03:08:55,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:08:55,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:08:55,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:08:55,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-28 03:08:55,687 INFO L286 TraceCheckSpWp]: Computing forward predicates...