./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/fibonacci.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 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:17:29,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:17:29,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:17:29,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:17:29,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:17:29,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:17:29,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:17:29,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:17:29,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:17:29,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:17:29,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:17:29,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:17:29,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:17:29,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:17:29,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:17:29,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:17:29,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:17:29,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:17:29,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:17:29,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:17:29,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:17:29,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:17:29,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:17:29,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:17:29,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:17:29,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:17:29,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:17:29,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:17:29,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:17:29,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:17:29,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:17:29,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:17:29,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:17:29,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:17:29,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:17:29,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:17:29,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:17:29,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:17:29,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:17:29,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:17:29,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:17:29,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 15:17:29,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:17:29,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:17:29,888 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:17:29,888 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:17:29,889 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:17:29,889 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:17:29,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:17:29,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:17:29,890 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:17:29,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:17:29,891 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 15:17:29,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:17:29,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 15:17:29,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:17:29,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:17:29,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:17:29,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:17:29,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 15:17:29,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:17:29,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:17:29,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:17:29,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:17:29,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:17:29,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:17:29,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:17:29,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:17:29,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:17:29,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:17:29,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:17:29,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:17:29,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:17:29,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:17:29,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:17:29,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:17:29,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f56768e1b40ef6b1b210f9cfb796e99d1f27ee48ed204adfea165b19bcc995e [2021-12-21 15:17:30,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:17:30,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:17:30,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:17:30,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:17:30,184 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:17:30,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2021-12-21 15:17:30,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aee13061/f99e097c348547bebb1dd3530de08c7c/FLAG589134ba2 [2021-12-21 15:17:30,658 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:17:30,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2021-12-21 15:17:30,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aee13061/f99e097c348547bebb1dd3530de08c7c/FLAG589134ba2 [2021-12-21 15:17:31,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aee13061/f99e097c348547bebb1dd3530de08c7c [2021-12-21 15:17:31,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:17:31,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:17:31,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:17:31,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:17:31,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:17:31,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abaff07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31, skipping insertion in model container [2021-12-21 15:17:31,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:17:31,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:17:31,255 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/fibonacci.wvr.c[2330,2343] [2021-12-21 15:17:31,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:17:31,269 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:17:31,285 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/fibonacci.wvr.c[2330,2343] [2021-12-21 15:17:31,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:17:31,297 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:17:31,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31 WrapperNode [2021-12-21 15:17:31,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:17:31,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:17:31,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:17:31,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:17:31,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,347 INFO L137 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 170 [2021-12-21 15:17:31,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:17:31,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:17:31,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:17:31,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:17:31,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:17:31,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:17:31,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:17:31,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:17:31,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (1/1) ... [2021-12-21 15:17:31,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:17:31,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:17:31,420 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) [2021-12-21 15:17:31,421 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 [2021-12-21 15:17:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:17:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-21 15:17:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-21 15:17:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-21 15:17:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-21 15:17:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:17:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:17:31,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:17:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:17:31,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:17:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:17:31,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:17:31,457 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-21 15:17:31,524 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:17:31,525 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:17:31,854 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:17:31,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:17:31,877 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 15:17:31,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:17:31 BoogieIcfgContainer [2021-12-21 15:17:31,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:17:31,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:17:31,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:17:31,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:17:31,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:17:31" (1/3) ... [2021-12-21 15:17:31,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cea3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:17:31, skipping insertion in model container [2021-12-21 15:17:31,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:17:31" (2/3) ... [2021-12-21 15:17:31,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cea3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:17:31, skipping insertion in model container [2021-12-21 15:17:31,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:17:31" (3/3) ... [2021-12-21 15:17:31,898 INFO L111 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2021-12-21 15:17:31,902 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-21 15:17:31,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:17:31,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:17:31,902 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-21 15:17:31,990 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,993 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,994 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:31,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,000 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,002 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,009 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,009 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,010 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,011 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,012 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,014 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,014 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,014 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,015 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,015 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,015 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,015 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,015 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,016 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,016 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,017 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,017 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,017 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,019 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,019 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,019 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,020 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,020 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,020 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,021 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,023 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,024 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,025 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,025 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,025 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,025 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,025 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,026 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,026 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,026 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,029 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,030 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,030 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,031 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,031 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,031 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,031 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,033 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,035 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,035 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,035 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,035 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,036 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,036 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,036 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,036 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,036 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,037 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,037 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,037 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,037 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,038 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,038 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,038 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,039 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,039 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,039 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,040 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,040 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,040 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,040 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,040 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,041 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,041 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,042 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,043 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,044 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,045 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,045 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,045 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,048 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,048 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,049 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,049 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,049 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,049 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,049 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,050 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,050 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,050 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,050 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,050 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,051 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,051 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,051 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,052 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,052 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,052 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,053 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,053 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,055 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,056 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,059 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,059 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,059 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,059 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,060 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,060 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,060 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,060 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,061 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,062 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,062 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,063 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,063 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,064 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,066 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,067 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,067 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,067 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,068 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,068 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,068 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,069 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,069 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,069 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,070 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,070 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,070 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,070 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,071 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,071 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,071 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,071 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,071 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,072 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,073 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,073 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,074 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,074 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,074 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,074 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,075 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,076 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,076 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,076 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,077 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,077 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,077 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,077 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,077 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,078 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,078 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,078 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,078 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,079 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,080 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,083 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,084 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,085 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,086 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,088 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,089 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,090 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,091 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,092 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,098 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,099 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,131 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,132 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,136 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,136 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,136 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,140 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,141 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,142 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,145 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,146 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,150 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_plus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-21 15:17:32,190 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-21 15:17:32,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:17:32,237 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 [2021-12-21 15:17:32,240 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-21 15:17:32,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 221 places, 230 transitions, 476 flow [2021-12-21 15:17:32,374 INFO L129 PetriNetUnfolder]: 16/228 cut-off events. [2021-12-21 15:17:32,374 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 15:17:32,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 228 events. 16/228 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 382 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2021-12-21 15:17:32,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 230 transitions, 476 flow [2021-12-21 15:17:32,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 219 transitions, 450 flow [2021-12-21 15:17:32,439 INFO L129 PetriNetUnfolder]: 10/170 cut-off events. [2021-12-21 15:17:32,439 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-21 15:17:32,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:32,440 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] [2021-12-21 15:17:32,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:32,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1218315603, now seen corresponding path program 1 times [2021-12-21 15:17:32,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763371721] [2021-12-21 15:17:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:32,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:32,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:32,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763371721] [2021-12-21 15:17:32,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763371721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:32,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:32,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 15:17:32,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303336732] [2021-12-21 15:17:32,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:32,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 15:17:32,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:32,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 15:17:32,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 15:17:32,727 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 230 [2021-12-21 15:17:32,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 219 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 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) [2021-12-21 15:17:32,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:32,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 230 [2021-12-21 15:17:32,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:32,798 INFO L129 PetriNetUnfolder]: 4/207 cut-off events. [2021-12-21 15:17:32,799 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-21 15:17:32,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 207 events. 4/207 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 320 event pairs, 0 based on Foata normal form. 14/207 useless extension candidates. Maximal degree in co-relation 144. Up to 5 conditions per place. [2021-12-21 15:17:32,805 INFO L132 encePairwiseOnDemand]: 218/230 looper letters, 4 selfloop transitions, 0 changer transitions 2/207 dead transitions. [2021-12-21 15:17:32,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 207 transitions, 434 flow [2021-12-21 15:17:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 15:17:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-21 15:17:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 442 transitions. [2021-12-21 15:17:32,824 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9608695652173913 [2021-12-21 15:17:32,825 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 442 transitions. [2021-12-21 15:17:32,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 442 transitions. [2021-12-21 15:17:32,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:32,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 442 transitions. [2021-12-21 15:17:32,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 221.0) internal successors, (442), 2 states have internal predecessors, (442), 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) [2021-12-21 15:17:32,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 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) [2021-12-21 15:17:32,849 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 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) [2021-12-21 15:17:32,850 INFO L186 Difference]: Start difference. First operand has 210 places, 219 transitions, 450 flow. Second operand 2 states and 442 transitions. [2021-12-21 15:17:32,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 207 transitions, 434 flow [2021-12-21 15:17:32,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 207 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-21 15:17:32,860 INFO L242 Difference]: Finished difference. Result has 207 places, 205 transitions, 414 flow [2021-12-21 15:17:32,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=207, PETRI_TRANSITIONS=205} [2021-12-21 15:17:32,867 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, -3 predicate places. [2021-12-21 15:17:32,867 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 205 transitions, 414 flow [2021-12-21 15:17:32,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 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) [2021-12-21 15:17:32,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:32,868 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] [2021-12-21 15:17:32,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:17:32,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:32,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash -123752174, now seen corresponding path program 1 times [2021-12-21 15:17:32,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:32,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914541937] [2021-12-21 15:17:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:32,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:33,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:33,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914541937] [2021-12-21 15:17:33,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914541937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:33,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:33,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:17:33,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679353668] [2021-12-21 15:17:33,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:33,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:17:33,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:17:33,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:17:33,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 230 [2021-12-21 15:17:33,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 205 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2021-12-21 15:17:33,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:33,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 230 [2021-12-21 15:17:33,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:33,366 INFO L129 PetriNetUnfolder]: 103/1035 cut-off events. [2021-12-21 15:17:33,367 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-12-21 15:17:33,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 1035 events. 103/1035 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5949 event pairs, 11 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 1245. Up to 112 conditions per place. [2021-12-21 15:17:33,375 INFO L132 encePairwiseOnDemand]: 219/230 looper letters, 53 selfloop transitions, 13 changer transitions 0/245 dead transitions. [2021-12-21 15:17:33,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 245 transitions, 634 flow [2021-12-21 15:17:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:17:33,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:17:33,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1390 transitions. [2021-12-21 15:17:33,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8633540372670807 [2021-12-21 15:17:33,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1390 transitions. [2021-12-21 15:17:33,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1390 transitions. [2021-12-21 15:17:33,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:33,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1390 transitions. [2021-12-21 15:17:33,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 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) [2021-12-21 15:17:33,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 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) [2021-12-21 15:17:33,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 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) [2021-12-21 15:17:33,390 INFO L186 Difference]: Start difference. First operand has 207 places, 205 transitions, 414 flow. Second operand 7 states and 1390 transitions. [2021-12-21 15:17:33,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 245 transitions, 634 flow [2021-12-21 15:17:33,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 245 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-21 15:17:33,402 INFO L242 Difference]: Finished difference. Result has 214 places, 213 transitions, 485 flow [2021-12-21 15:17:33,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2021-12-21 15:17:33,404 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 4 predicate places. [2021-12-21 15:17:33,404 INFO L470 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 485 flow [2021-12-21 15:17:33,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2021-12-21 15:17:33,405 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:33,406 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] [2021-12-21 15:17:33,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:17:33,406 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:33,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash -912411040, now seen corresponding path program 2 times [2021-12-21 15:17:33,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:33,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937294921] [2021-12-21 15:17:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:33,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:33,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:33,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937294921] [2021-12-21 15:17:33,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937294921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:33,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:33,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:17:33,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528568620] [2021-12-21 15:17:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:33,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:17:33,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:17:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:17:33,532 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 230 [2021-12-21 15:17:33,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 213 transitions, 485 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2021-12-21 15:17:33,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:33,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 230 [2021-12-21 15:17:33,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:33,816 INFO L129 PetriNetUnfolder]: 102/1164 cut-off events. [2021-12-21 15:17:33,816 INFO L130 PetriNetUnfolder]: For 185/189 co-relation queries the response was YES. [2021-12-21 15:17:33,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 1164 events. 102/1164 cut-off events. For 185/189 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7267 event pairs, 12 based on Foata normal form. 1/1084 useless extension candidates. Maximal degree in co-relation 1536. Up to 117 conditions per place. [2021-12-21 15:17:33,845 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 58 selfloop transitions, 14 changer transitions 0/251 dead transitions. [2021-12-21 15:17:33,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 251 transitions, 741 flow [2021-12-21 15:17:33,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:17:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:17:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1391 transitions. [2021-12-21 15:17:33,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8639751552795031 [2021-12-21 15:17:33,849 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1391 transitions. [2021-12-21 15:17:33,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1391 transitions. [2021-12-21 15:17:33,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:33,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1391 transitions. [2021-12-21 15:17:33,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.71428571428572) internal successors, (1391), 7 states have internal predecessors, (1391), 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) [2021-12-21 15:17:33,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 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) [2021-12-21 15:17:33,856 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 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) [2021-12-21 15:17:33,856 INFO L186 Difference]: Start difference. First operand has 214 places, 213 transitions, 485 flow. Second operand 7 states and 1391 transitions. [2021-12-21 15:17:33,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 251 transitions, 741 flow [2021-12-21 15:17:33,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 251 transitions, 737 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-21 15:17:33,865 INFO L242 Difference]: Finished difference. Result has 221 places, 219 transitions, 560 flow [2021-12-21 15:17:33,866 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=560, PETRI_PLACES=221, PETRI_TRANSITIONS=219} [2021-12-21 15:17:33,868 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 11 predicate places. [2021-12-21 15:17:33,868 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 219 transitions, 560 flow [2021-12-21 15:17:33,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2021-12-21 15:17:33,869 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:33,869 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] [2021-12-21 15:17:33,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:17:33,870 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:33,871 INFO L85 PathProgramCache]: Analyzing trace with hash -673188942, now seen corresponding path program 1 times [2021-12-21 15:17:33,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:33,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018883288] [2021-12-21 15:17:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:33,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:33,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:33,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018883288] [2021-12-21 15:17:33,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018883288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:33,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:33,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:33,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679193300] [2021-12-21 15:17:33,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:33,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:33,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:33,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:33,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:33,979 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:33,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 219 transitions, 560 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:33,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:33,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:33,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:34,274 INFO L129 PetriNetUnfolder]: 152/1229 cut-off events. [2021-12-21 15:17:34,275 INFO L130 PetriNetUnfolder]: For 147/152 co-relation queries the response was YES. [2021-12-21 15:17:34,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 1229 events. 152/1229 cut-off events. For 147/152 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7370 event pairs, 66 based on Foata normal form. 3/1153 useless extension candidates. Maximal degree in co-relation 1730. Up to 215 conditions per place. [2021-12-21 15:17:34,287 INFO L132 encePairwiseOnDemand]: 218/230 looper letters, 39 selfloop transitions, 6 changer transitions 16/256 dead transitions. [2021-12-21 15:17:34,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 256 transitions, 765 flow [2021-12-21 15:17:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:17:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:17:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2545 transitions. [2021-12-21 15:17:34,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8511705685618729 [2021-12-21 15:17:34,293 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2545 transitions. [2021-12-21 15:17:34,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2545 transitions. [2021-12-21 15:17:34,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:34,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2545 transitions. [2021-12-21 15:17:34,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.76923076923077) internal successors, (2545), 13 states have internal predecessors, (2545), 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) [2021-12-21 15:17:34,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:34,308 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:34,308 INFO L186 Difference]: Start difference. First operand has 221 places, 219 transitions, 560 flow. Second operand 13 states and 2545 transitions. [2021-12-21 15:17:34,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 256 transitions, 765 flow [2021-12-21 15:17:34,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 256 transitions, 759 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-21 15:17:34,317 INFO L242 Difference]: Finished difference. Result has 242 places, 221 transitions, 607 flow [2021-12-21 15:17:34,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=607, PETRI_PLACES=242, PETRI_TRANSITIONS=221} [2021-12-21 15:17:34,319 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 32 predicate places. [2021-12-21 15:17:34,319 INFO L470 AbstractCegarLoop]: Abstraction has has 242 places, 221 transitions, 607 flow [2021-12-21 15:17:34,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:34,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:34,320 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] [2021-12-21 15:17:34,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:17:34,321 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:34,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1473973244, now seen corresponding path program 1 times [2021-12-21 15:17:34,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:34,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301423409] [2021-12-21 15:17:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:34,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:34,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:34,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301423409] [2021-12-21 15:17:34,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301423409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:34,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:34,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:17:34,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866527374] [2021-12-21 15:17:34,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:34,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:17:34,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:34,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:17:34,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:17:34,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 230 [2021-12-21 15:17:34,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 221 transitions, 607 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2021-12-21 15:17:34,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:34,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 230 [2021-12-21 15:17:34,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:34,682 INFO L129 PetriNetUnfolder]: 114/1212 cut-off events. [2021-12-21 15:17:34,682 INFO L130 PetriNetUnfolder]: For 605/631 co-relation queries the response was YES. [2021-12-21 15:17:34,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 1212 events. 114/1212 cut-off events. For 605/631 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7769 event pairs, 25 based on Foata normal form. 11/1136 useless extension candidates. Maximal degree in co-relation 1937. Up to 121 conditions per place. [2021-12-21 15:17:34,692 INFO L132 encePairwiseOnDemand]: 218/230 looper letters, 56 selfloop transitions, 16 changer transitions 0/253 dead transitions. [2021-12-21 15:17:34,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 253 transitions, 859 flow [2021-12-21 15:17:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:17:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:17:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1390 transitions. [2021-12-21 15:17:34,697 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8633540372670807 [2021-12-21 15:17:34,697 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1390 transitions. [2021-12-21 15:17:34,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1390 transitions. [2021-12-21 15:17:34,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:34,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1390 transitions. [2021-12-21 15:17:34,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.57142857142858) internal successors, (1390), 7 states have internal predecessors, (1390), 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) [2021-12-21 15:17:34,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 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) [2021-12-21 15:17:34,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 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) [2021-12-21 15:17:34,705 INFO L186 Difference]: Start difference. First operand has 242 places, 221 transitions, 607 flow. Second operand 7 states and 1390 transitions. [2021-12-21 15:17:34,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 253 transitions, 859 flow [2021-12-21 15:17:34,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 253 transitions, 819 flow, removed 15 selfloop flow, removed 9 redundant places. [2021-12-21 15:17:34,714 INFO L242 Difference]: Finished difference. Result has 235 places, 223 transitions, 654 flow [2021-12-21 15:17:34,714 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=654, PETRI_PLACES=235, PETRI_TRANSITIONS=223} [2021-12-21 15:17:34,717 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 25 predicate places. [2021-12-21 15:17:34,717 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 223 transitions, 654 flow [2021-12-21 15:17:34,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2021-12-21 15:17:34,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:34,718 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] [2021-12-21 15:17:34,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:17:34,719 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1729373994, now seen corresponding path program 2 times [2021-12-21 15:17:34,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:34,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417325219] [2021-12-21 15:17:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:34,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:34,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:34,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417325219] [2021-12-21 15:17:34,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417325219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:34,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:34,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:17:34,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130984753] [2021-12-21 15:17:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:34,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:17:34,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:17:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:17:34,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 230 [2021-12-21 15:17:34,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 223 transitions, 654 flow. Second operand has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2021-12-21 15:17:34,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:34,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 230 [2021-12-21 15:17:34,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:35,075 INFO L129 PetriNetUnfolder]: 110/1203 cut-off events. [2021-12-21 15:17:35,075 INFO L130 PetriNetUnfolder]: For 730/746 co-relation queries the response was YES. [2021-12-21 15:17:35,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 1203 events. 110/1203 cut-off events. For 730/746 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7700 event pairs, 23 based on Foata normal form. 7/1121 useless extension candidates. Maximal degree in co-relation 1866. Up to 135 conditions per place. [2021-12-21 15:17:35,086 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 58 selfloop transitions, 14 changer transitions 0/253 dead transitions. [2021-12-21 15:17:35,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 253 transitions, 887 flow [2021-12-21 15:17:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:17:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-21 15:17:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1389 transitions. [2021-12-21 15:17:35,090 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8627329192546583 [2021-12-21 15:17:35,090 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1389 transitions. [2021-12-21 15:17:35,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1389 transitions. [2021-12-21 15:17:35,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:35,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1389 transitions. [2021-12-21 15:17:35,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.42857142857142) internal successors, (1389), 7 states have internal predecessors, (1389), 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) [2021-12-21 15:17:35,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 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) [2021-12-21 15:17:35,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 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) [2021-12-21 15:17:35,098 INFO L186 Difference]: Start difference. First operand has 235 places, 223 transitions, 654 flow. Second operand 7 states and 1389 transitions. [2021-12-21 15:17:35,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 253 transitions, 887 flow [2021-12-21 15:17:35,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 253 transitions, 872 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-12-21 15:17:35,106 INFO L242 Difference]: Finished difference. Result has 241 places, 225 transitions, 706 flow [2021-12-21 15:17:35,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=706, PETRI_PLACES=241, PETRI_TRANSITIONS=225} [2021-12-21 15:17:35,110 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 31 predicate places. [2021-12-21 15:17:35,110 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 225 transitions, 706 flow [2021-12-21 15:17:35,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.0) internal successors, (1152), 6 states have internal predecessors, (1152), 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) [2021-12-21 15:17:35,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:35,111 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] [2021-12-21 15:17:35,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:17:35,112 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:35,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash 592781596, now seen corresponding path program 2 times [2021-12-21 15:17:35,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:35,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168930377] [2021-12-21 15:17:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:35,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:35,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:35,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168930377] [2021-12-21 15:17:35,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168930377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:35,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:35,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:35,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896289250] [2021-12-21 15:17:35,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:35,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:35,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:35,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:35,200 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:35,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 225 transitions, 706 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:35,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:35,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:35,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:35,489 INFO L129 PetriNetUnfolder]: 153/1487 cut-off events. [2021-12-21 15:17:35,489 INFO L130 PetriNetUnfolder]: For 634/647 co-relation queries the response was YES. [2021-12-21 15:17:35,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 1487 events. 153/1487 cut-off events. For 634/647 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9667 event pairs, 76 based on Foata normal form. 3/1396 useless extension candidates. Maximal degree in co-relation 2385. Up to 259 conditions per place. [2021-12-21 15:17:35,502 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 34 selfloop transitions, 8 changer transitions 12/253 dead transitions. [2021-12-21 15:17:35,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 253 transitions, 925 flow [2021-12-21 15:17:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:17:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:17:35,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2152 transitions. [2021-12-21 15:17:35,507 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.850592885375494 [2021-12-21 15:17:35,507 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2152 transitions. [2021-12-21 15:17:35,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2152 transitions. [2021-12-21 15:17:35,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:35,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2152 transitions. [2021-12-21 15:17:35,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.63636363636363) internal successors, (2152), 11 states have internal predecessors, (2152), 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) [2021-12-21 15:17:35,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2021-12-21 15:17:35,518 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2021-12-21 15:17:35,518 INFO L186 Difference]: Start difference. First operand has 241 places, 225 transitions, 706 flow. Second operand 11 states and 2152 transitions. [2021-12-21 15:17:35,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 253 transitions, 925 flow [2021-12-21 15:17:35,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 253 transitions, 912 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-12-21 15:17:35,527 INFO L242 Difference]: Finished difference. Result has 256 places, 232 transitions, 771 flow [2021-12-21 15:17:35,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=771, PETRI_PLACES=256, PETRI_TRANSITIONS=232} [2021-12-21 15:17:35,528 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 46 predicate places. [2021-12-21 15:17:35,528 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 232 transitions, 771 flow [2021-12-21 15:17:35,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:35,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:35,529 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] [2021-12-21 15:17:35,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:17:35,530 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:35,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:35,530 INFO L85 PathProgramCache]: Analyzing trace with hash 963975448, now seen corresponding path program 1 times [2021-12-21 15:17:35,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:35,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450696203] [2021-12-21 15:17:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:35,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:35,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:35,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450696203] [2021-12-21 15:17:35,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450696203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:35,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:35,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:35,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011164143] [2021-12-21 15:17:35,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:35,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:35,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:35,618 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:35,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 232 transitions, 771 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:35,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:35,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:35,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:35,909 INFO L129 PetriNetUnfolder]: 159/1511 cut-off events. [2021-12-21 15:17:35,909 INFO L130 PetriNetUnfolder]: For 1134/1159 co-relation queries the response was YES. [2021-12-21 15:17:35,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 1511 events. 159/1511 cut-off events. For 1134/1159 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9883 event pairs, 68 based on Foata normal form. 3/1421 useless extension candidates. Maximal degree in co-relation 2779. Up to 275 conditions per place. [2021-12-21 15:17:35,925 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 40 selfloop transitions, 8 changer transitions 12/259 dead transitions. [2021-12-21 15:17:35,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 259 transitions, 1043 flow [2021-12-21 15:17:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:17:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:17:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2152 transitions. [2021-12-21 15:17:35,931 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.850592885375494 [2021-12-21 15:17:35,931 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2152 transitions. [2021-12-21 15:17:35,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2152 transitions. [2021-12-21 15:17:35,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:35,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2152 transitions. [2021-12-21 15:17:35,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.63636363636363) internal successors, (2152), 11 states have internal predecessors, (2152), 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) [2021-12-21 15:17:35,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2021-12-21 15:17:35,967 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2021-12-21 15:17:35,967 INFO L186 Difference]: Start difference. First operand has 256 places, 232 transitions, 771 flow. Second operand 11 states and 2152 transitions. [2021-12-21 15:17:35,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 259 transitions, 1043 flow [2021-12-21 15:17:35,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 259 transitions, 1023 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-12-21 15:17:35,977 INFO L242 Difference]: Finished difference. Result has 265 places, 238 transitions, 834 flow [2021-12-21 15:17:35,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=834, PETRI_PLACES=265, PETRI_TRANSITIONS=238} [2021-12-21 15:17:35,978 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 55 predicate places. [2021-12-21 15:17:35,978 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 238 transitions, 834 flow [2021-12-21 15:17:35,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:35,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:35,979 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] [2021-12-21 15:17:35,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:17:35,980 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash -769828056, now seen corresponding path program 2 times [2021-12-21 15:17:35,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:35,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153219765] [2021-12-21 15:17:35,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:35,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:36,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:36,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153219765] [2021-12-21 15:17:36,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153219765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:36,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:36,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:36,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664044060] [2021-12-21 15:17:36,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:36,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:36,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:36,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:36,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 238 transitions, 834 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:36,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:36,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:36,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:36,380 INFO L129 PetriNetUnfolder]: 155/1519 cut-off events. [2021-12-21 15:17:36,381 INFO L130 PetriNetUnfolder]: For 1707/1744 co-relation queries the response was YES. [2021-12-21 15:17:36,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 1519 events. 155/1519 cut-off events. For 1707/1744 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 10005 event pairs, 52 based on Foata normal form. 7/1437 useless extension candidates. Maximal degree in co-relation 3037. Up to 211 conditions per place. [2021-12-21 15:17:36,397 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 57 selfloop transitions, 6 changer transitions 17/279 dead transitions. [2021-12-21 15:17:36,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 279 transitions, 1263 flow [2021-12-21 15:17:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:17:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:17:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2543 transitions. [2021-12-21 15:17:36,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8505016722408026 [2021-12-21 15:17:36,403 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2543 transitions. [2021-12-21 15:17:36,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2543 transitions. [2021-12-21 15:17:36,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:36,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2543 transitions. [2021-12-21 15:17:36,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.6153846153846) internal successors, (2543), 13 states have internal predecessors, (2543), 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) [2021-12-21 15:17:36,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:36,416 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:36,416 INFO L186 Difference]: Start difference. First operand has 265 places, 238 transitions, 834 flow. Second operand 13 states and 2543 transitions. [2021-12-21 15:17:36,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 279 transitions, 1263 flow [2021-12-21 15:17:36,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 279 transitions, 1160 flow, removed 45 selfloop flow, removed 7 redundant places. [2021-12-21 15:17:36,429 INFO L242 Difference]: Finished difference. Result has 275 places, 239 transitions, 843 flow [2021-12-21 15:17:36,430 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=843, PETRI_PLACES=275, PETRI_TRANSITIONS=239} [2021-12-21 15:17:36,430 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 65 predicate places. [2021-12-21 15:17:36,431 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 239 transitions, 843 flow [2021-12-21 15:17:36,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:36,431 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:36,431 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] [2021-12-21 15:17:36,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:17:36,432 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1693242874, now seen corresponding path program 3 times [2021-12-21 15:17:36,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:36,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422443144] [2021-12-21 15:17:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:36,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:36,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:36,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422443144] [2021-12-21 15:17:36,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422443144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:36,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:36,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:36,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526714767] [2021-12-21 15:17:36,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:36,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:36,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:36,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:36,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 239 transitions, 843 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:36,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:36,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:36,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:36,812 INFO L129 PetriNetUnfolder]: 152/1535 cut-off events. [2021-12-21 15:17:36,813 INFO L130 PetriNetUnfolder]: For 1906/1949 co-relation queries the response was YES. [2021-12-21 15:17:36,824 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3125 conditions, 1535 events. 152/1535 cut-off events. For 1906/1949 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10218 event pairs, 46 based on Foata normal form. 5/1452 useless extension candidates. Maximal degree in co-relation 3085. Up to 195 conditions per place. [2021-12-21 15:17:36,831 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 59 selfloop transitions, 6 changer transitions 16/280 dead transitions. [2021-12-21 15:17:36,831 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 280 transitions, 1305 flow [2021-12-21 15:17:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:17:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:17:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2545 transitions. [2021-12-21 15:17:36,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8511705685618729 [2021-12-21 15:17:36,837 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2545 transitions. [2021-12-21 15:17:36,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2545 transitions. [2021-12-21 15:17:36,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:36,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2545 transitions. [2021-12-21 15:17:36,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.76923076923077) internal successors, (2545), 13 states have internal predecessors, (2545), 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) [2021-12-21 15:17:36,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:36,847 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:36,848 INFO L186 Difference]: Start difference. First operand has 275 places, 239 transitions, 843 flow. Second operand 13 states and 2545 transitions. [2021-12-21 15:17:36,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 280 transitions, 1305 flow [2021-12-21 15:17:36,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 280 transitions, 1259 flow, removed 21 selfloop flow, removed 8 redundant places. [2021-12-21 15:17:36,861 INFO L242 Difference]: Finished difference. Result has 280 places, 239 transitions, 862 flow [2021-12-21 15:17:36,862 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=862, PETRI_PLACES=280, PETRI_TRANSITIONS=239} [2021-12-21 15:17:36,862 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 70 predicate places. [2021-12-21 15:17:36,862 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 239 transitions, 862 flow [2021-12-21 15:17:36,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:36,863 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:36,863 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] [2021-12-21 15:17:36,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:17:36,864 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1108970958, now seen corresponding path program 4 times [2021-12-21 15:17:36,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:36,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120802381] [2021-12-21 15:17:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:36,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:36,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:36,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120802381] [2021-12-21 15:17:36,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120802381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:36,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:36,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:36,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125555954] [2021-12-21 15:17:36,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:36,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:36,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:36,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:36,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:36,929 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:36,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 239 transitions, 862 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:36,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:36,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:36,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:37,221 INFO L129 PetriNetUnfolder]: 139/1389 cut-off events. [2021-12-21 15:17:37,221 INFO L130 PetriNetUnfolder]: For 2224/2272 co-relation queries the response was YES. [2021-12-21 15:17:37,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3051 conditions, 1389 events. 139/1389 cut-off events. For 2224/2272 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8934 event pairs, 64 based on Foata normal form. 3/1310 useless extension candidates. Maximal degree in co-relation 3009. Up to 285 conditions per place. [2021-12-21 15:17:37,239 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 42 selfloop transitions, 10 changer transitions 11/262 dead transitions. [2021-12-21 15:17:37,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 262 transitions, 1204 flow [2021-12-21 15:17:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:17:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:17:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2150 transitions. [2021-12-21 15:17:37,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.849802371541502 [2021-12-21 15:17:37,245 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2150 transitions. [2021-12-21 15:17:37,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2150 transitions. [2021-12-21 15:17:37,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:37,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2150 transitions. [2021-12-21 15:17:37,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.45454545454547) internal successors, (2150), 11 states have internal predecessors, (2150), 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) [2021-12-21 15:17:37,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2021-12-21 15:17:37,254 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2021-12-21 15:17:37,255 INFO L186 Difference]: Start difference. First operand has 280 places, 239 transitions, 862 flow. Second operand 11 states and 2150 transitions. [2021-12-21 15:17:37,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 262 transitions, 1204 flow [2021-12-21 15:17:37,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 262 transitions, 1125 flow, removed 23 selfloop flow, removed 11 redundant places. [2021-12-21 15:17:37,268 INFO L242 Difference]: Finished difference. Result has 279 places, 245 transitions, 940 flow [2021-12-21 15:17:37,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=940, PETRI_PLACES=279, PETRI_TRANSITIONS=245} [2021-12-21 15:17:37,269 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 69 predicate places. [2021-12-21 15:17:37,269 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 245 transitions, 940 flow [2021-12-21 15:17:37,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:37,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:37,270 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] [2021-12-21 15:17:37,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 15:17:37,270 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:37,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1358536022, now seen corresponding path program 5 times [2021-12-21 15:17:37,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:37,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219789875] [2021-12-21 15:17:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:37,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:37,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:37,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:37,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219789875] [2021-12-21 15:17:37,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219789875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:37,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:37,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:37,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980958289] [2021-12-21 15:17:37,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:37,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:37,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:37,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:37,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:37,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:37,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 245 transitions, 940 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:37,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:37,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:37,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:37,610 INFO L129 PetriNetUnfolder]: 133/1467 cut-off events. [2021-12-21 15:17:37,610 INFO L130 PetriNetUnfolder]: For 2100/2157 co-relation queries the response was YES. [2021-12-21 15:17:37,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 1467 events. 133/1467 cut-off events. For 2100/2157 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9640 event pairs, 60 based on Foata normal form. 11/1391 useless extension candidates. Maximal degree in co-relation 2989. Up to 265 conditions per place. [2021-12-21 15:17:37,627 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 41 selfloop transitions, 4 changer transitions 18/262 dead transitions. [2021-12-21 15:17:37,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 262 transitions, 1198 flow [2021-12-21 15:17:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:17:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:17:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2341 transitions. [2021-12-21 15:17:37,633 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8481884057971014 [2021-12-21 15:17:37,633 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2341 transitions. [2021-12-21 15:17:37,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2341 transitions. [2021-12-21 15:17:37,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:37,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2341 transitions. [2021-12-21 15:17:37,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.08333333333334) internal successors, (2341), 12 states have internal predecessors, (2341), 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) [2021-12-21 15:17:37,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 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) [2021-12-21 15:17:37,667 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 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) [2021-12-21 15:17:37,667 INFO L186 Difference]: Start difference. First operand has 279 places, 245 transitions, 940 flow. Second operand 12 states and 2341 transitions. [2021-12-21 15:17:37,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 262 transitions, 1198 flow [2021-12-21 15:17:37,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 262 transitions, 1141 flow, removed 25 selfloop flow, removed 5 redundant places. [2021-12-21 15:17:37,681 INFO L242 Difference]: Finished difference. Result has 286 places, 239 transitions, 862 flow [2021-12-21 15:17:37,682 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=862, PETRI_PLACES=286, PETRI_TRANSITIONS=239} [2021-12-21 15:17:37,683 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 76 predicate places. [2021-12-21 15:17:37,683 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 239 transitions, 862 flow [2021-12-21 15:17:37,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:37,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:37,684 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] [2021-12-21 15:17:37,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 15:17:37,684 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1201816088, now seen corresponding path program 6 times [2021-12-21 15:17:37,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:37,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30234931] [2021-12-21 15:17:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:37,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:37,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:37,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30234931] [2021-12-21 15:17:37,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30234931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:37,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:37,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:37,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915760154] [2021-12-21 15:17:37,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:37,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:37,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:37,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:37,748 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:37,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 239 transitions, 862 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:37,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:37,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:37,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:38,028 INFO L129 PetriNetUnfolder]: 127/1421 cut-off events. [2021-12-21 15:17:38,028 INFO L130 PetriNetUnfolder]: For 1953/2006 co-relation queries the response was YES. [2021-12-21 15:17:38,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2831 conditions, 1421 events. 127/1421 cut-off events. For 1953/2006 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9146 event pairs, 60 based on Foata normal form. 5/1338 useless extension candidates. Maximal degree in co-relation 2787. Up to 241 conditions per place. [2021-12-21 15:17:38,046 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 36 selfloop transitions, 2 changer transitions 19/254 dead transitions. [2021-12-21 15:17:38,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 254 transitions, 1071 flow [2021-12-21 15:17:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:17:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:17:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2340 transitions. [2021-12-21 15:17:38,051 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2021-12-21 15:17:38,051 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2340 transitions. [2021-12-21 15:17:38,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2340 transitions. [2021-12-21 15:17:38,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:38,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2340 transitions. [2021-12-21 15:17:38,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 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) [2021-12-21 15:17:38,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 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) [2021-12-21 15:17:38,061 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 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) [2021-12-21 15:17:38,061 INFO L186 Difference]: Start difference. First operand has 286 places, 239 transitions, 862 flow. Second operand 12 states and 2340 transitions. [2021-12-21 15:17:38,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 254 transitions, 1071 flow [2021-12-21 15:17:38,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 254 transitions, 1007 flow, removed 19 selfloop flow, removed 13 redundant places. [2021-12-21 15:17:38,115 INFO L242 Difference]: Finished difference. Result has 278 places, 231 transitions, 774 flow [2021-12-21 15:17:38,116 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=774, PETRI_PLACES=278, PETRI_TRANSITIONS=231} [2021-12-21 15:17:38,116 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 68 predicate places. [2021-12-21 15:17:38,116 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 231 transitions, 774 flow [2021-12-21 15:17:38,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:38,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:38,117 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] [2021-12-21 15:17:38,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 15:17:38,117 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:38,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:38,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1115789980, now seen corresponding path program 3 times [2021-12-21 15:17:38,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:38,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083272652] [2021-12-21 15:17:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:38,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:38,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:38,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083272652] [2021-12-21 15:17:38,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083272652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:38,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:38,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:38,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93123636] [2021-12-21 15:17:38,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:38,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:38,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:38,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:38,174 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:38,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 231 transitions, 774 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:38,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:38,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:38,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:38,453 INFO L129 PetriNetUnfolder]: 124/1396 cut-off events. [2021-12-21 15:17:38,454 INFO L130 PetriNetUnfolder]: For 1369/1402 co-relation queries the response was YES. [2021-12-21 15:17:38,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2594 conditions, 1396 events. 124/1396 cut-off events. For 1369/1402 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8977 event pairs, 36 based on Foata normal form. 7/1321 useless extension candidates. Maximal degree in co-relation 2554. Up to 132 conditions per place. [2021-12-21 15:17:38,468 INFO L132 encePairwiseOnDemand]: 219/230 looper letters, 49 selfloop transitions, 8 changer transitions 17/271 dead transitions. [2021-12-21 15:17:38,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 271 transitions, 1141 flow [2021-12-21 15:17:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:17:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:17:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2543 transitions. [2021-12-21 15:17:38,473 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8505016722408026 [2021-12-21 15:17:38,473 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2543 transitions. [2021-12-21 15:17:38,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2543 transitions. [2021-12-21 15:17:38,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:38,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2543 transitions. [2021-12-21 15:17:38,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 195.6153846153846) internal successors, (2543), 13 states have internal predecessors, (2543), 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) [2021-12-21 15:17:38,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:38,482 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:38,482 INFO L186 Difference]: Start difference. First operand has 278 places, 231 transitions, 774 flow. Second operand 13 states and 2543 transitions. [2021-12-21 15:17:38,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 271 transitions, 1141 flow [2021-12-21 15:17:38,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 271 transitions, 1070 flow, removed 24 selfloop flow, removed 14 redundant places. [2021-12-21 15:17:38,493 INFO L242 Difference]: Finished difference. Result has 273 places, 231 transitions, 776 flow [2021-12-21 15:17:38,494 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=776, PETRI_PLACES=273, PETRI_TRANSITIONS=231} [2021-12-21 15:17:38,494 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 63 predicate places. [2021-12-21 15:17:38,495 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 231 transitions, 776 flow [2021-12-21 15:17:38,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:38,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:38,495 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] [2021-12-21 15:17:38,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 15:17:38,496 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1968758762, now seen corresponding path program 4 times [2021-12-21 15:17:38,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:38,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150517472] [2021-12-21 15:17:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:38,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:38,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:38,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150517472] [2021-12-21 15:17:38,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150517472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:38,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:38,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:38,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562278243] [2021-12-21 15:17:38,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:38,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:38,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:38,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:38,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:38,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:38,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 231 transitions, 776 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:38,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:38,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:38,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:38,829 INFO L129 PetriNetUnfolder]: 114/1260 cut-off events. [2021-12-21 15:17:38,829 INFO L130 PetriNetUnfolder]: For 1423/1462 co-relation queries the response was YES. [2021-12-21 15:17:38,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 1260 events. 114/1260 cut-off events. For 1423/1462 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7730 event pairs, 44 based on Foata normal form. 3/1188 useless extension candidates. Maximal degree in co-relation 2400. Up to 194 conditions per place. [2021-12-21 15:17:38,844 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 37 selfloop transitions, 10 changer transitions 12/256 dead transitions. [2021-12-21 15:17:38,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 256 transitions, 1084 flow [2021-12-21 15:17:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:17:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:17:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2343 transitions. [2021-12-21 15:17:38,848 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489130434782609 [2021-12-21 15:17:38,848 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2343 transitions. [2021-12-21 15:17:38,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2343 transitions. [2021-12-21 15:17:38,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:38,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2343 transitions. [2021-12-21 15:17:38,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.25) internal successors, (2343), 12 states have internal predecessors, (2343), 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) [2021-12-21 15:17:38,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 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) [2021-12-21 15:17:38,857 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 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) [2021-12-21 15:17:38,857 INFO L186 Difference]: Start difference. First operand has 273 places, 231 transitions, 776 flow. Second operand 12 states and 2343 transitions. [2021-12-21 15:17:38,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 256 transitions, 1084 flow [2021-12-21 15:17:38,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 256 transitions, 1000 flow, removed 18 selfloop flow, removed 12 redundant places. [2021-12-21 15:17:38,868 INFO L242 Difference]: Finished difference. Result has 271 places, 237 transitions, 832 flow [2021-12-21 15:17:38,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=832, PETRI_PLACES=271, PETRI_TRANSITIONS=237} [2021-12-21 15:17:38,869 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 61 predicate places. [2021-12-21 15:17:38,869 INFO L470 AbstractCegarLoop]: Abstraction has has 271 places, 237 transitions, 832 flow [2021-12-21 15:17:38,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:38,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:38,870 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] [2021-12-21 15:17:38,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 15:17:38,871 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:38,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash -416983822, now seen corresponding path program 5 times [2021-12-21 15:17:38,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:38,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018258864] [2021-12-21 15:17:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:38,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:38,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018258864] [2021-12-21 15:17:38,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018258864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:38,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:38,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:38,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545530338] [2021-12-21 15:17:38,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:38,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:38,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:38,932 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:38,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 237 transitions, 832 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:38,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:38,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:38,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:39,200 INFO L129 PetriNetUnfolder]: 106/1340 cut-off events. [2021-12-21 15:17:39,200 INFO L130 PetriNetUnfolder]: For 1450/1504 co-relation queries the response was YES. [2021-12-21 15:17:39,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1340 events. 106/1340 cut-off events. For 1450/1504 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8476 event pairs, 44 based on Foata normal form. 11/1269 useless extension candidates. Maximal degree in co-relation 2419. Up to 192 conditions per place. [2021-12-21 15:17:39,213 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 35 selfloop transitions, 4 changer transitions 16/252 dead transitions. [2021-12-21 15:17:39,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 252 transitions, 1038 flow [2021-12-21 15:17:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:17:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-21 15:17:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2148 transitions. [2021-12-21 15:17:39,216 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8490118577075099 [2021-12-21 15:17:39,216 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2148 transitions. [2021-12-21 15:17:39,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2148 transitions. [2021-12-21 15:17:39,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:39,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2148 transitions. [2021-12-21 15:17:39,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 195.27272727272728) internal successors, (2148), 11 states have internal predecessors, (2148), 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) [2021-12-21 15:17:39,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2021-12-21 15:17:39,224 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 230.0) internal successors, (2760), 12 states have internal predecessors, (2760), 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) [2021-12-21 15:17:39,224 INFO L186 Difference]: Start difference. First operand has 271 places, 237 transitions, 832 flow. Second operand 11 states and 2148 transitions. [2021-12-21 15:17:39,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 252 transitions, 1038 flow [2021-12-21 15:17:39,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 252 transitions, 1012 flow, removed 13 selfloop flow, removed 3 redundant places. [2021-12-21 15:17:39,234 INFO L242 Difference]: Finished difference. Result has 277 places, 231 transitions, 778 flow [2021-12-21 15:17:39,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=778, PETRI_PLACES=277, PETRI_TRANSITIONS=231} [2021-12-21 15:17:39,235 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 67 predicate places. [2021-12-21 15:17:39,235 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 231 transitions, 778 flow [2021-12-21 15:17:39,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:39,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:39,236 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] [2021-12-21 15:17:39,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 15:17:39,237 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1458226200, now seen corresponding path program 6 times [2021-12-21 15:17:39,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:39,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036800169] [2021-12-21 15:17:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:39,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:39,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:39,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036800169] [2021-12-21 15:17:39,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036800169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:39,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:39,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:17:39,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526306732] [2021-12-21 15:17:39,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:39,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:17:39,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:17:39,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:17:39,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 230 [2021-12-21 15:17:39,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 231 transitions, 778 flow. Second operand has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:39,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:39,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 230 [2021-12-21 15:17:39,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:39,563 INFO L129 PetriNetUnfolder]: 102/1296 cut-off events. [2021-12-21 15:17:39,564 INFO L130 PetriNetUnfolder]: For 1523/1573 co-relation queries the response was YES. [2021-12-21 15:17:39,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 1296 events. 102/1296 cut-off events. For 1523/1573 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8061 event pairs, 44 based on Foata normal form. 5/1218 useless extension candidates. Maximal degree in co-relation 2297. Up to 164 conditions per place. [2021-12-21 15:17:39,581 INFO L132 encePairwiseOnDemand]: 221/230 looper letters, 30 selfloop transitions, 2 changer transitions 19/246 dead transitions. [2021-12-21 15:17:39,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 246 transitions, 973 flow [2021-12-21 15:17:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:17:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-21 15:17:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2340 transitions. [2021-12-21 15:17:39,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2021-12-21 15:17:39,585 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2340 transitions. [2021-12-21 15:17:39,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2340 transitions. [2021-12-21 15:17:39,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:39,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2340 transitions. [2021-12-21 15:17:39,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.0) internal successors, (2340), 12 states have internal predecessors, (2340), 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) [2021-12-21 15:17:39,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 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) [2021-12-21 15:17:39,594 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 230.0) internal successors, (2990), 13 states have internal predecessors, (2990), 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) [2021-12-21 15:17:39,594 INFO L186 Difference]: Start difference. First operand has 277 places, 231 transitions, 778 flow. Second operand 12 states and 2340 transitions. [2021-12-21 15:17:39,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 246 transitions, 973 flow [2021-12-21 15:17:39,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 246 transitions, 923 flow, removed 16 selfloop flow, removed 11 redundant places. [2021-12-21 15:17:39,604 INFO L242 Difference]: Finished difference. Result has 272 places, 223 transitions, 709 flow [2021-12-21 15:17:39,605 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=709, PETRI_PLACES=272, PETRI_TRANSITIONS=223} [2021-12-21 15:17:39,606 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 62 predicate places. [2021-12-21 15:17:39,606 INFO L470 AbstractCegarLoop]: Abstraction has has 272 places, 223 transitions, 709 flow [2021-12-21 15:17:39,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.75) internal successors, (1550), 8 states have internal predecessors, (1550), 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) [2021-12-21 15:17:39,606 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:39,607 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:39,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 15:17:39,607 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash 522220320, now seen corresponding path program 1 times [2021-12-21 15:17:39,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:39,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686263261] [2021-12-21 15:17:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:39,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:39,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:39,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686263261] [2021-12-21 15:17:39,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686263261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:39,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:39,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:17:39,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832223273] [2021-12-21 15:17:39,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:39,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:17:39,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:39,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:17:39,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:17:39,673 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:39,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 223 transitions, 709 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2021-12-21 15:17:39,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:39,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:39,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:39,985 INFO L129 PetriNetUnfolder]: 130/2075 cut-off events. [2021-12-21 15:17:39,985 INFO L130 PetriNetUnfolder]: For 1225/1247 co-relation queries the response was YES. [2021-12-21 15:17:39,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3190 conditions, 2075 events. 130/2075 cut-off events. For 1225/1247 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14876 event pairs, 49 based on Foata normal form. 1/1912 useless extension candidates. Maximal degree in co-relation 3151. Up to 120 conditions per place. [2021-12-21 15:17:40,004 INFO L132 encePairwiseOnDemand]: 223/230 looper letters, 27 selfloop transitions, 5 changer transitions 3/242 dead transitions. [2021-12-21 15:17:40,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 242 transitions, 821 flow [2021-12-21 15:17:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:17:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:17:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1242 transitions. [2021-12-21 15:17:40,006 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-12-21 15:17:40,006 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1242 transitions. [2021-12-21 15:17:40,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1242 transitions. [2021-12-21 15:17:40,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:40,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1242 transitions. [2021-12-21 15:17:40,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 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) [2021-12-21 15:17:40,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 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) [2021-12-21 15:17:40,011 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 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) [2021-12-21 15:17:40,011 INFO L186 Difference]: Start difference. First operand has 272 places, 223 transitions, 709 flow. Second operand 6 states and 1242 transitions. [2021-12-21 15:17:40,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 242 transitions, 821 flow [2021-12-21 15:17:40,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 242 transitions, 783 flow, removed 9 selfloop flow, removed 14 redundant places. [2021-12-21 15:17:40,022 INFO L242 Difference]: Finished difference. Result has 254 places, 225 transitions, 697 flow [2021-12-21 15:17:40,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=697, PETRI_PLACES=254, PETRI_TRANSITIONS=225} [2021-12-21 15:17:40,023 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 44 predicate places. [2021-12-21 15:17:40,023 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 225 transitions, 697 flow [2021-12-21 15:17:40,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2021-12-21 15:17:40,024 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:40,024 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:40,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 15:17:40,024 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:40,025 INFO L85 PathProgramCache]: Analyzing trace with hash 658946078, now seen corresponding path program 2 times [2021-12-21 15:17:40,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029680956] [2021-12-21 15:17:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:40,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:40,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029680956] [2021-12-21 15:17:40,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029680956] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:17:40,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468573390] [2021-12-21 15:17:40,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:17:40,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:40,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:17:40,095 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) [2021-12-21 15:17:40,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:17:40,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:17:40,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:17:40,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:17:40,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:17:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:40,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:17:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:40,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468573390] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:17:40,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:17:40,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2021-12-21 15:17:40,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661716952] [2021-12-21 15:17:40,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:17:40,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:17:40,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:17:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:17:40,772 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:40,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 225 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 203.22222222222223) internal successors, (1829), 9 states have internal predecessors, (1829), 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) [2021-12-21 15:17:40,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:40,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:40,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:41,347 INFO L129 PetriNetUnfolder]: 191/3256 cut-off events. [2021-12-21 15:17:41,348 INFO L130 PetriNetUnfolder]: For 1154/1186 co-relation queries the response was YES. [2021-12-21 15:17:41,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 3256 events. 191/3256 cut-off events. For 1154/1186 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 25567 event pairs, 41 based on Foata normal form. 9/3067 useless extension candidates. Maximal degree in co-relation 4637. Up to 80 conditions per place. [2021-12-21 15:17:41,379 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 51 selfloop transitions, 31 changer transitions 1/290 dead transitions. [2021-12-21 15:17:41,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 290 transitions, 1077 flow [2021-12-21 15:17:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:17:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-21 15:17:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2890 transitions. [2021-12-21 15:17:41,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8975155279503105 [2021-12-21 15:17:41,383 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2890 transitions. [2021-12-21 15:17:41,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2890 transitions. [2021-12-21 15:17:41,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:41,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2890 transitions. [2021-12-21 15:17:41,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.42857142857142) internal successors, (2890), 14 states have internal predecessors, (2890), 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) [2021-12-21 15:17:41,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 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) [2021-12-21 15:17:41,391 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 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) [2021-12-21 15:17:41,391 INFO L186 Difference]: Start difference. First operand has 254 places, 225 transitions, 697 flow. Second operand 14 states and 2890 transitions. [2021-12-21 15:17:41,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 290 transitions, 1077 flow [2021-12-21 15:17:41,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 290 transitions, 1050 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-12-21 15:17:41,403 INFO L242 Difference]: Finished difference. Result has 270 places, 257 transitions, 909 flow [2021-12-21 15:17:41,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=909, PETRI_PLACES=270, PETRI_TRANSITIONS=257} [2021-12-21 15:17:41,404 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 60 predicate places. [2021-12-21 15:17:41,404 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 257 transitions, 909 flow [2021-12-21 15:17:41,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 203.22222222222223) internal successors, (1829), 9 states have internal predecessors, (1829), 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) [2021-12-21 15:17:41,405 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:41,405 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:41,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:17:41,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:41,632 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:41,632 INFO L85 PathProgramCache]: Analyzing trace with hash -603143444, now seen corresponding path program 3 times [2021-12-21 15:17:41,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:41,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785871125] [2021-12-21 15:17:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:41,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:41,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:41,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785871125] [2021-12-21 15:17:41,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785871125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:41,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:41,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:17:41,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288893066] [2021-12-21 15:17:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:41,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:17:41,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:17:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:17:41,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:41,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 257 transitions, 909 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2021-12-21 15:17:41,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:41,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:41,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:42,203 INFO L129 PetriNetUnfolder]: 232/3508 cut-off events. [2021-12-21 15:17:42,203 INFO L130 PetriNetUnfolder]: For 1914/1953 co-relation queries the response was YES. [2021-12-21 15:17:42,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5513 conditions, 3508 events. 232/3508 cut-off events. For 1914/1953 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 28024 event pairs, 81 based on Foata normal form. 8/3291 useless extension candidates. Maximal degree in co-relation 5475. Up to 199 conditions per place. [2021-12-21 15:17:42,236 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 61 selfloop transitions, 18 changer transitions 6/292 dead transitions. [2021-12-21 15:17:42,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 292 transitions, 1267 flow [2021-12-21 15:17:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:17:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:17:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1257 transitions. [2021-12-21 15:17:42,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9108695652173913 [2021-12-21 15:17:42,238 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1257 transitions. [2021-12-21 15:17:42,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1257 transitions. [2021-12-21 15:17:42,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:42,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1257 transitions. [2021-12-21 15:17:42,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.5) internal successors, (1257), 6 states have internal predecessors, (1257), 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) [2021-12-21 15:17:42,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 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) [2021-12-21 15:17:42,242 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 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) [2021-12-21 15:17:42,242 INFO L186 Difference]: Start difference. First operand has 270 places, 257 transitions, 909 flow. Second operand 6 states and 1257 transitions. [2021-12-21 15:17:42,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 292 transitions, 1267 flow [2021-12-21 15:17:42,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 292 transitions, 1265 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-12-21 15:17:42,258 INFO L242 Difference]: Finished difference. Result has 277 places, 265 transitions, 1024 flow [2021-12-21 15:17:42,258 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=277, PETRI_TRANSITIONS=265} [2021-12-21 15:17:42,259 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 67 predicate places. [2021-12-21 15:17:42,259 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 265 transitions, 1024 flow [2021-12-21 15:17:42,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2021-12-21 15:17:42,259 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:42,260 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:42,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 15:17:42,260 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash -417482268, now seen corresponding path program 1 times [2021-12-21 15:17:42,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:42,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577833907] [2021-12-21 15:17:42,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:42,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:42,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577833907] [2021-12-21 15:17:42,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577833907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:42,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:42,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:17:42,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712277427] [2021-12-21 15:17:42,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:42,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:17:42,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:42,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:17:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:17:42,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:42,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 265 transitions, 1024 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2021-12-21 15:17:42,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:42,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:42,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:42,834 INFO L129 PetriNetUnfolder]: 219/3384 cut-off events. [2021-12-21 15:17:42,834 INFO L130 PetriNetUnfolder]: For 2113/2153 co-relation queries the response was YES. [2021-12-21 15:17:42,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 3384 events. 219/3384 cut-off events. For 2113/2153 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 26470 event pairs, 84 based on Foata normal form. 6/3171 useless extension candidates. Maximal degree in co-relation 5366. Up to 185 conditions per place. [2021-12-21 15:17:42,866 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 69 selfloop transitions, 26 changer transitions 3/305 dead transitions. [2021-12-21 15:17:42,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 305 transitions, 1449 flow [2021-12-21 15:17:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:17:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-21 15:17:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1255 transitions. [2021-12-21 15:17:42,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9094202898550725 [2021-12-21 15:17:42,868 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1255 transitions. [2021-12-21 15:17:42,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1255 transitions. [2021-12-21 15:17:42,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:42,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1255 transitions. [2021-12-21 15:17:42,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.16666666666666) internal successors, (1255), 6 states have internal predecessors, (1255), 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) [2021-12-21 15:17:42,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 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) [2021-12-21 15:17:42,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 230.0) internal successors, (1610), 7 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) [2021-12-21 15:17:42,873 INFO L186 Difference]: Start difference. First operand has 277 places, 265 transitions, 1024 flow. Second operand 6 states and 1255 transitions. [2021-12-21 15:17:42,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 305 transitions, 1449 flow [2021-12-21 15:17:42,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 305 transitions, 1432 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-21 15:17:42,891 INFO L242 Difference]: Finished difference. Result has 284 places, 273 transitions, 1176 flow [2021-12-21 15:17:42,891 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1176, PETRI_PLACES=284, PETRI_TRANSITIONS=273} [2021-12-21 15:17:42,892 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 74 predicate places. [2021-12-21 15:17:42,892 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 273 transitions, 1176 flow [2021-12-21 15:17:42,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2021-12-21 15:17:42,892 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:42,893 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:42,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 15:17:42,893 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:42,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2007793182, now seen corresponding path program 2 times [2021-12-21 15:17:42,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:42,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948309756] [2021-12-21 15:17:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:42,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:42,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:42,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948309756] [2021-12-21 15:17:42,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948309756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:17:42,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515799536] [2021-12-21 15:17:42,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 15:17:42,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:42,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:17:42,953 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) [2021-12-21 15:17:42,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:17:43,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:17:43,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:17:43,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:17:43,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:17:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:43,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:17:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:43,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515799536] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:17:43,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:17:43,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2021-12-21 15:17:43,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733088862] [2021-12-21 15:17:43,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:17:43,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:17:43,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:43,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:17:43,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:17:43,541 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:43,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 273 transitions, 1176 flow. Second operand has 9 states, 9 states have (on average 203.22222222222223) internal successors, (1829), 9 states have internal predecessors, (1829), 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) [2021-12-21 15:17:43,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:43,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:43,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:44,153 INFO L129 PetriNetUnfolder]: 242/3882 cut-off events. [2021-12-21 15:17:44,153 INFO L130 PetriNetUnfolder]: For 2697/2728 co-relation queries the response was YES. [2021-12-21 15:17:44,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 3882 events. 242/3882 cut-off events. For 2697/2728 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 32472 event pairs, 51 based on Foata normal form. 8/3644 useless extension candidates. Maximal degree in co-relation 6254. Up to 92 conditions per place. [2021-12-21 15:17:44,181 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 65 selfloop transitions, 71 changer transitions 4/347 dead transitions. [2021-12-21 15:17:44,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 347 transitions, 1939 flow [2021-12-21 15:17:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:17:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-12-21 15:17:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2887 transitions. [2021-12-21 15:17:44,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896583850931677 [2021-12-21 15:17:44,185 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2887 transitions. [2021-12-21 15:17:44,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2887 transitions. [2021-12-21 15:17:44,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:44,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2887 transitions. [2021-12-21 15:17:44,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 206.21428571428572) internal successors, (2887), 14 states have internal predecessors, (2887), 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) [2021-12-21 15:17:44,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 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) [2021-12-21 15:17:44,193 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 230.0) internal successors, (3450), 15 states have internal predecessors, (3450), 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) [2021-12-21 15:17:44,193 INFO L186 Difference]: Start difference. First operand has 284 places, 273 transitions, 1176 flow. Second operand 14 states and 2887 transitions. [2021-12-21 15:17:44,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 347 transitions, 1939 flow [2021-12-21 15:17:44,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 347 transitions, 1909 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-12-21 15:17:44,213 INFO L242 Difference]: Finished difference. Result has 304 places, 311 transitions, 1712 flow [2021-12-21 15:17:44,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1712, PETRI_PLACES=304, PETRI_TRANSITIONS=311} [2021-12-21 15:17:44,214 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 94 predicate places. [2021-12-21 15:17:44,214 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 311 transitions, 1712 flow [2021-12-21 15:17:44,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 203.22222222222223) internal successors, (1829), 9 states have internal predecessors, (1829), 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) [2021-12-21 15:17:44,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:44,215 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:44,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:17:44,431 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,SelfDestructingSolverStorable21 [2021-12-21 15:17:44,432 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:44,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1210834426, now seen corresponding path program 3 times [2021-12-21 15:17:44,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:44,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314644684] [2021-12-21 15:17:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:44,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:44,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314644684] [2021-12-21 15:17:44,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314644684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:17:44,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:17:44,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:17:44,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493900662] [2021-12-21 15:17:44,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:17:44,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:17:44,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:17:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:17:44,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:44,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 311 transitions, 1712 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2021-12-21 15:17:44,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:44,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:44,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:44,943 INFO L129 PetriNetUnfolder]: 220/3486 cut-off events. [2021-12-21 15:17:44,944 INFO L130 PetriNetUnfolder]: For 3145/3165 co-relation queries the response was YES. [2021-12-21 15:17:44,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5963 conditions, 3486 events. 220/3486 cut-off events. For 3145/3165 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 28166 event pairs, 80 based on Foata normal form. 5/3265 useless extension candidates. Maximal degree in co-relation 5911. Up to 202 conditions per place. [2021-12-21 15:17:44,972 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 85 selfloop transitions, 29 changer transitions 1/322 dead transitions. [2021-12-21 15:17:44,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 322 transitions, 1983 flow [2021-12-21 15:17:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:17:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-21 15:17:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2021-12-21 15:17:44,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9095652173913044 [2021-12-21 15:17:44,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2021-12-21 15:17:44,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2021-12-21 15:17:44,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:44,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2021-12-21 15:17:44,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 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) [2021-12-21 15:17:44,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 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) [2021-12-21 15:17:44,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 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) [2021-12-21 15:17:44,977 INFO L186 Difference]: Start difference. First operand has 304 places, 311 transitions, 1712 flow. Second operand 5 states and 1046 transitions. [2021-12-21 15:17:44,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 322 transitions, 1983 flow [2021-12-21 15:17:44,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 322 transitions, 1846 flow, removed 33 selfloop flow, removed 4 redundant places. [2021-12-21 15:17:45,000 INFO L242 Difference]: Finished difference. Result has 305 places, 309 transitions, 1622 flow [2021-12-21 15:17:45,001 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1622, PETRI_PLACES=305, PETRI_TRANSITIONS=309} [2021-12-21 15:17:45,001 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 95 predicate places. [2021-12-21 15:17:45,001 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 309 transitions, 1622 flow [2021-12-21 15:17:45,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2021-12-21 15:17:45,002 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:45,002 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:45,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 15:17:45,002 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:45,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1391662808, now seen corresponding path program 4 times [2021-12-21 15:17:45,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:45,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115719024] [2021-12-21 15:17:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:45,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:45,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:45,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115719024] [2021-12-21 15:17:45,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115719024] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:17:45,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571388898] [2021-12-21 15:17:45,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 15:17:45,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:45,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:17:45,064 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) [2021-12-21 15:17:45,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:17:45,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 15:17:45,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:17:45,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:17:45,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:17:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:45,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:17:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:45,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571388898] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:17:45,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:17:45,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2021-12-21 15:17:45,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378557160] [2021-12-21 15:17:45,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:17:45,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:17:45,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:45,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:17:45,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:17:45,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:45,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 309 transitions, 1622 flow. Second operand has 11 states, 11 states have (on average 203.36363636363637) internal successors, (2237), 11 states have internal predecessors, (2237), 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) [2021-12-21 15:17:45,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:45,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:45,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:46,231 INFO L129 PetriNetUnfolder]: 223/3871 cut-off events. [2021-12-21 15:17:46,232 INFO L130 PetriNetUnfolder]: For 2999/3019 co-relation queries the response was YES. [2021-12-21 15:17:46,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6409 conditions, 3871 events. 223/3871 cut-off events. For 2999/3019 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 32142 event pairs, 71 based on Foata normal form. 5/3633 useless extension candidates. Maximal degree in co-relation 6358. Up to 154 conditions per place. [2021-12-21 15:17:46,267 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 76 selfloop transitions, 57 changer transitions 1/341 dead transitions. [2021-12-21 15:17:46,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 341 transitions, 2090 flow [2021-12-21 15:17:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:17:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-21 15:17:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1865 transitions. [2021-12-21 15:17:46,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9009661835748792 [2021-12-21 15:17:46,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1865 transitions. [2021-12-21 15:17:46,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1865 transitions. [2021-12-21 15:17:46,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:46,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1865 transitions. [2021-12-21 15:17:46,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.22222222222223) internal successors, (1865), 9 states have internal predecessors, (1865), 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) [2021-12-21 15:17:46,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 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) [2021-12-21 15:17:46,278 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 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) [2021-12-21 15:17:46,278 INFO L186 Difference]: Start difference. First operand has 305 places, 309 transitions, 1622 flow. Second operand 9 states and 1865 transitions. [2021-12-21 15:17:46,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 341 transitions, 2090 flow [2021-12-21 15:17:46,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 341 transitions, 2012 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-12-21 15:17:46,305 INFO L242 Difference]: Finished difference. Result has 312 places, 321 transitions, 1853 flow [2021-12-21 15:17:46,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1853, PETRI_PLACES=312, PETRI_TRANSITIONS=321} [2021-12-21 15:17:46,306 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 102 predicate places. [2021-12-21 15:17:46,306 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 321 transitions, 1853 flow [2021-12-21 15:17:46,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.36363636363637) internal successors, (2237), 11 states have internal predecessors, (2237), 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) [2021-12-21 15:17:46,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:46,307 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:46,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 15:17:46,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:46,524 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:46,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1061911468, now seen corresponding path program 4 times [2021-12-21 15:17:46,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:46,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057960413] [2021-12-21 15:17:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:46,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:46,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:46,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057960413] [2021-12-21 15:17:46,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057960413] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:17:46,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256259106] [2021-12-21 15:17:46,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 15:17:46,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:46,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:17:46,589 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:17:46,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:17:46,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 15:17:46,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:17:46,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:17:46,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:17:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:47,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:17:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:47,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256259106] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:17:47,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:17:47,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2021-12-21 15:17:47,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154715867] [2021-12-21 15:17:47,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:17:47,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:17:47,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:47,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:17:47,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:17:47,217 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:47,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 321 transitions, 1853 flow. Second operand has 11 states, 11 states have (on average 203.45454545454547) internal successors, (2238), 11 states have internal predecessors, (2238), 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) [2021-12-21 15:17:47,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:47,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:47,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:47,921 INFO L129 PetriNetUnfolder]: 291/4931 cut-off events. [2021-12-21 15:17:47,921 INFO L130 PetriNetUnfolder]: For 4071/4108 co-relation queries the response was YES. [2021-12-21 15:17:47,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8165 conditions, 4931 events. 291/4931 cut-off events. For 4071/4108 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 45251 event pairs, 69 based on Foata normal form. 7/4620 useless extension candidates. Maximal degree in co-relation 8111. Up to 134 conditions per place. [2021-12-21 15:17:47,959 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 85 selfloop transitions, 81 changer transitions 0/373 dead transitions. [2021-12-21 15:17:47,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 373 transitions, 2490 flow [2021-12-21 15:17:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:17:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:17:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2688 transitions. [2021-12-21 15:17:47,962 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8989966555183947 [2021-12-21 15:17:47,962 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2688 transitions. [2021-12-21 15:17:47,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2688 transitions. [2021-12-21 15:17:47,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:47,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2688 transitions. [2021-12-21 15:17:47,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 206.76923076923077) internal successors, (2688), 13 states have internal predecessors, (2688), 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) [2021-12-21 15:17:47,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:47,970 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:47,970 INFO L186 Difference]: Start difference. First operand has 312 places, 321 transitions, 1853 flow. Second operand 13 states and 2688 transitions. [2021-12-21 15:17:47,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 373 transitions, 2490 flow [2021-12-21 15:17:47,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 373 transitions, 2302 flow, removed 39 selfloop flow, removed 8 redundant places. [2021-12-21 15:17:47,997 INFO L242 Difference]: Finished difference. Result has 320 places, 341 transitions, 2109 flow [2021-12-21 15:17:47,998 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2109, PETRI_PLACES=320, PETRI_TRANSITIONS=341} [2021-12-21 15:17:47,998 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 110 predicate places. [2021-12-21 15:17:47,998 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 341 transitions, 2109 flow [2021-12-21 15:17:47,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.45454545454547) internal successors, (2238), 11 states have internal predecessors, (2238), 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) [2021-12-21 15:17:47,999 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:47,999 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:48,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:17:48,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:48,223 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:48,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash -753398586, now seen corresponding path program 5 times [2021-12-21 15:17:48,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:48,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993431461] [2021-12-21 15:17:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:48,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:48,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:48,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993431461] [2021-12-21 15:17:48,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993431461] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:17:48,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949392271] [2021-12-21 15:17:48,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 15:17:48,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:48,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:17:48,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:17:48,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 15:17:48,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 15:17:48,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 15:17:48,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:17:48,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:17:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:48,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:17:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:49,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949392271] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:17:49,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:17:49,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2021-12-21 15:17:49,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328074575] [2021-12-21 15:17:49,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:17:49,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:17:49,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:17:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:17:49,025 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:49,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 341 transitions, 2109 flow. Second operand has 11 states, 11 states have (on average 203.36363636363637) internal successors, (2237), 11 states have internal predecessors, (2237), 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) [2021-12-21 15:17:49,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:49,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:49,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:49,803 INFO L129 PetriNetUnfolder]: 272/5111 cut-off events. [2021-12-21 15:17:49,803 INFO L130 PetriNetUnfolder]: For 4323/4365 co-relation queries the response was YES. [2021-12-21 15:17:49,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8384 conditions, 5111 events. 272/5111 cut-off events. For 4323/4365 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 47965 event pairs, 99 based on Foata normal form. 8/4782 useless extension candidates. Maximal degree in co-relation 8333. Up to 157 conditions per place. [2021-12-21 15:17:49,832 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 81 selfloop transitions, 86 changer transitions 5/371 dead transitions. [2021-12-21 15:17:49,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 371 transitions, 2592 flow [2021-12-21 15:17:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:17:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-21 15:17:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2684 transitions. [2021-12-21 15:17:49,836 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8976588628762542 [2021-12-21 15:17:49,836 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2684 transitions. [2021-12-21 15:17:49,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2684 transitions. [2021-12-21 15:17:49,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:49,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2684 transitions. [2021-12-21 15:17:49,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 206.46153846153845) internal successors, (2684), 13 states have internal predecessors, (2684), 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) [2021-12-21 15:17:49,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:49,843 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 230.0) internal successors, (3220), 14 states have internal predecessors, (3220), 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) [2021-12-21 15:17:49,843 INFO L186 Difference]: Start difference. First operand has 320 places, 341 transitions, 2109 flow. Second operand 13 states and 2684 transitions. [2021-12-21 15:17:49,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 371 transitions, 2592 flow [2021-12-21 15:17:49,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 371 transitions, 2558 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-12-21 15:17:49,868 INFO L242 Difference]: Finished difference. Result has 326 places, 339 transitions, 2251 flow [2021-12-21 15:17:49,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2251, PETRI_PLACES=326, PETRI_TRANSITIONS=339} [2021-12-21 15:17:49,869 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 116 predicate places. [2021-12-21 15:17:49,870 INFO L470 AbstractCegarLoop]: Abstraction has has 326 places, 339 transitions, 2251 flow [2021-12-21 15:17:49,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.36363636363637) internal successors, (2237), 11 states have internal predecessors, (2237), 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) [2021-12-21 15:17:49,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:49,870 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:49,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 15:17:50,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-21 15:17:50,080 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:50,080 INFO L85 PathProgramCache]: Analyzing trace with hash -977035420, now seen corresponding path program 1 times [2021-12-21 15:17:50,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:50,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000977709] [2021-12-21 15:17:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:50,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:50,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:50,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000977709] [2021-12-21 15:17:50,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000977709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:17:50,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967964963] [2021-12-21 15:17:50,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:50,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:50,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:17:50,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:17:50,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 15:17:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:50,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:17:50,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:17:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:50,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:17:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:50,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967964963] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:17:50,811 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:17:50,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2021-12-21 15:17:50,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363540908] [2021-12-21 15:17:50,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:17:50,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:17:50,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:17:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:17:50,815 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 230 [2021-12-21 15:17:50,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 339 transitions, 2251 flow. Second operand has 11 states, 11 states have (on average 203.54545454545453) internal successors, (2239), 11 states have internal predecessors, (2239), 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) [2021-12-21 15:17:50,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:50,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 230 [2021-12-21 15:17:50,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:17:51,574 INFO L129 PetriNetUnfolder]: 259/4776 cut-off events. [2021-12-21 15:17:51,574 INFO L130 PetriNetUnfolder]: For 4567/4602 co-relation queries the response was YES. [2021-12-21 15:17:51,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7845 conditions, 4776 events. 259/4776 cut-off events. For 4567/4602 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 43724 event pairs, 73 based on Foata normal form. 6/4466 useless extension candidates. Maximal degree in co-relation 7794. Up to 204 conditions per place. [2021-12-21 15:17:51,612 INFO L132 encePairwiseOnDemand]: 222/230 looper letters, 92 selfloop transitions, 65 changer transitions 1/357 dead transitions. [2021-12-21 15:17:51,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 357 transitions, 2642 flow [2021-12-21 15:17:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:17:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-21 15:17:51,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1865 transitions. [2021-12-21 15:17:51,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9009661835748792 [2021-12-21 15:17:51,614 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1865 transitions. [2021-12-21 15:17:51,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1865 transitions. [2021-12-21 15:17:51,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:17:51,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1865 transitions. [2021-12-21 15:17:51,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.22222222222223) internal successors, (1865), 9 states have internal predecessors, (1865), 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) [2021-12-21 15:17:51,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 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) [2021-12-21 15:17:51,620 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 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) [2021-12-21 15:17:51,620 INFO L186 Difference]: Start difference. First operand has 326 places, 339 transitions, 2251 flow. Second operand 9 states and 1865 transitions. [2021-12-21 15:17:51,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 357 transitions, 2642 flow [2021-12-21 15:17:51,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 357 transitions, 2497 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-12-21 15:17:51,646 INFO L242 Difference]: Finished difference. Result has 322 places, 339 transitions, 2255 flow [2021-12-21 15:17:51,646 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2255, PETRI_PLACES=322, PETRI_TRANSITIONS=339} [2021-12-21 15:17:51,647 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 112 predicate places. [2021-12-21 15:17:51,647 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 339 transitions, 2255 flow [2021-12-21 15:17:51,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 203.54545454545453) internal successors, (2239), 11 states have internal predecessors, (2239), 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) [2021-12-21 15:17:51,647 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:17:51,648 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:17:51,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-21 15:17:51,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-21 15:17:51,864 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:17:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:17:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1494837026, now seen corresponding path program 1 times [2021-12-21 15:17:51,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:17:51,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137322436] [2021-12-21 15:17:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:51,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:17:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:52,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:17:52,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137322436] [2021-12-21 15:17:52,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137322436] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:17:52,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75477723] [2021-12-21 15:17:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:17:52,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:17:52,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:17:52,106 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:17:52,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 15:17:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:17:52,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-21 15:17:52,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:17:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:52,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:17:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:17:53,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75477723] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:17:53,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:17:53,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2021-12-21 15:17:53,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753318668] [2021-12-21 15:17:53,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:17:53,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-21 15:17:53,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:17:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-21 15:17:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2021-12-21 15:17:53,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2021-12-21 15:17:53,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 339 transitions, 2255 flow. Second operand has 39 states, 39 states have (on average 165.53846153846155) internal successors, (6456), 39 states have internal predecessors, (6456), 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) [2021-12-21 15:17:53,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:17:53,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2021-12-21 15:17:53,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:18:04,539 INFO L129 PetriNetUnfolder]: 6459/38061 cut-off events. [2021-12-21 15:18:04,539 INFO L130 PetriNetUnfolder]: For 25612/25752 co-relation queries the response was YES. [2021-12-21 15:18:04,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67521 conditions, 38061 events. 6459/38061 cut-off events. For 25612/25752 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 516780 event pairs, 960 based on Foata normal form. 36/36036 useless extension candidates. Maximal degree in co-relation 67476. Up to 5697 conditions per place. [2021-12-21 15:18:05,060 INFO L132 encePairwiseOnDemand]: 199/230 looper letters, 580 selfloop transitions, 228 changer transitions 9/1098 dead transitions. [2021-12-21 15:18:05,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 1098 transitions, 5836 flow [2021-12-21 15:18:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-12-21 15:18:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2021-12-21 15:18:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 21840 transitions. [2021-12-21 15:18:05,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7360970677451971 [2021-12-21 15:18:05,080 INFO L72 ComplementDD]: Start complementDD. Operand 129 states and 21840 transitions. [2021-12-21 15:18:05,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 21840 transitions. [2021-12-21 15:18:05,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 15:18:05,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 129 states and 21840 transitions. [2021-12-21 15:18:05,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 130 states, 129 states have (on average 169.30232558139534) internal successors, (21840), 129 states have internal predecessors, (21840), 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) [2021-12-21 15:18:05,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 130 states, 130 states have (on average 230.0) internal successors, (29900), 130 states have internal predecessors, (29900), 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) [2021-12-21 15:18:05,150 INFO L81 ComplementDD]: Finished complementDD. Result has 130 states, 130 states have (on average 230.0) internal successors, (29900), 130 states have internal predecessors, (29900), 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) [2021-12-21 15:18:05,151 INFO L186 Difference]: Start difference. First operand has 322 places, 339 transitions, 2255 flow. Second operand 129 states and 21840 transitions. [2021-12-21 15:18:05,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 1098 transitions, 5836 flow [2021-12-21 15:18:05,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1098 transitions, 5640 flow, removed 13 selfloop flow, removed 11 redundant places. [2021-12-21 15:18:05,470 INFO L242 Difference]: Finished difference. Result has 525 places, 578 transitions, 3862 flow [2021-12-21 15:18:05,471 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=129, PETRI_FLOW=3862, PETRI_PLACES=525, PETRI_TRANSITIONS=578} [2021-12-21 15:18:05,471 INFO L334 CegarLoopForPetriNet]: 210 programPoint places, 315 predicate places. [2021-12-21 15:18:05,471 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 578 transitions, 3862 flow [2021-12-21 15:18:05,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 165.53846153846155) internal successors, (6456), 39 states have internal predecessors, (6456), 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) [2021-12-21 15:18:05,473 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-21 15:18:05,473 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:18:05,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-21 15:18:05,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:18:05,794 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-21 15:18:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:18:05,795 INFO L85 PathProgramCache]: Analyzing trace with hash -375783344, now seen corresponding path program 1 times [2021-12-21 15:18:05,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:18:05,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770793649] [2021-12-21 15:18:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:18:05,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:18:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:18:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:06,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:18:06,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770793649] [2021-12-21 15:18:06,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770793649] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:18:06,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810905185] [2021-12-21 15:18:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:18:06,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:18:06,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:18:06,065 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:18:06,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 15:18:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:18:06,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-21 15:18:06,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:18:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:06,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:18:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:18:07,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810905185] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:18:07,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:18:07,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2021-12-21 15:18:07,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320121924] [2021-12-21 15:18:07,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:18:07,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-21 15:18:07,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:18:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-21 15:18:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1440, Unknown=0, NotChecked=0, Total=1560 [2021-12-21 15:18:07,600 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 230 [2021-12-21 15:18:07,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 578 transitions, 3862 flow. Second operand has 40 states, 40 states have (on average 165.55) internal successors, (6622), 40 states have internal predecessors, (6622), 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) [2021-12-21 15:18:07,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-21 15:18:07,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 230 [2021-12-21 15:18:07,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-21 15:18:23,807 INFO L129 PetriNetUnfolder]: 8719/51253 cut-off events. [2021-12-21 15:18:23,807 INFO L130 PetriNetUnfolder]: For 304230/305177 co-relation queries the response was YES.