./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i -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 649d1c1aa65cb6010503451d39379fb2c9cafcc7e0f5f23661f58b5d14c46288 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:49:50,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:49:50,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:49:50,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:49:50,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:49:50,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:49:50,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:49:50,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:49:50,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:49:50,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:49:50,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:49:50,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:49:50,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:49:50,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:49:50,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:49:50,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:49:50,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:49:50,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:49:50,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:49:50,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:49:50,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:49:50,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:49:50,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:49:50,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:49:50,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:49:50,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:49:50,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:49:50,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:49:50,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:49:50,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:49:50,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:49:50,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:49:50,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:49:50,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:49:50,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:49:50,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:49:50,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:49:50,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:49:50,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:49:50,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:49:50,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:49:50,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:49:50,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:49:50,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:49:50,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:49:50,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:49:50,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:49:50,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:49:50,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:49:50,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:49:50,677 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:49:50,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:49:50,677 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:49:50,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:49:50,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:49:50,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:49:50,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:49:50,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:49:50,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:49:50,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:49:50,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:49:50,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:49:50,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:49:50,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:49:50,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:49:50,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:49:50,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:49:50,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:49:50,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:49:50,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:49:50,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:49:50,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:49:50,680 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:49:50,680 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:49:50,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:49:50,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 649d1c1aa65cb6010503451d39379fb2c9cafcc7e0f5f23661f58b5d14c46288 [2021-12-28 02:49:51,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:49:51,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:49:51,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:49:51,039 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:49:51,040 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:49:51,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2021-12-28 02:49:51,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed829e7be/e63aecb0ced142bdbe420e057213f977/FLAG74d07870c [2021-12-28 02:49:51,488 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:49:51,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2021-12-28 02:49:51,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed829e7be/e63aecb0ced142bdbe420e057213f977/FLAG74d07870c [2021-12-28 02:49:51,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed829e7be/e63aecb0ced142bdbe420e057213f977 [2021-12-28 02:49:51,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:49:51,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:49:51,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:49:51,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:49:51,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:49:51,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:49:51" (1/1) ... [2021-12-28 02:49:51,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e50a0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:51, skipping insertion in model container [2021-12-28 02:49:51,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:49:51" (1/1) ... [2021-12-28 02:49:51,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:49:51,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:49:52,086 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/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2021-12-28 02:49:52,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:49:52,276 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:49:52,284 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/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2021-12-28 02:49:52,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:49:52,367 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:49:52,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52 WrapperNode [2021-12-28 02:49:52,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:49:52,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:49:52,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:49:52,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:49:52,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,407 INFO L137 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 190 [2021-12-28 02:49:52,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:49:52,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:49:52,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:49:52,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:49:52,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:49:52,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:49:52,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:49:52,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:49:52,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (1/1) ... [2021-12-28 02:49:52,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:49:52,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:49:52,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 02:49:52,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 02:49:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 02:49:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 02:49:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:49:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 02:49:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 02:49:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-28 02:49:52,576 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-28 02:49:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-28 02:49:52,576 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-28 02:49:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-28 02:49:52,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-28 02:49:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-12-28 02:49:52,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-12-28 02:49:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:49:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 02:49:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:49:52,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:49:52,579 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 02:49:52,682 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:49:52,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:49:53,072 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:49:53,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:49:53,351 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 02:49:53,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:49:53 BoogieIcfgContainer [2021-12-28 02:49:53,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:49:53,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:49:53,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:49:53,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:49:53,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:49:51" (1/3) ... [2021-12-28 02:49:53,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f2ff8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:49:53, skipping insertion in model container [2021-12-28 02:49:53,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:49:52" (2/3) ... [2021-12-28 02:49:53,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f2ff8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:49:53, skipping insertion in model container [2021-12-28 02:49:53,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:49:53" (3/3) ... [2021-12-28 02:49:53,359 INFO L111 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2021-12-28 02:49:53,364 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 02:49:53,364 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:49:53,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:49:53,364 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 02:49:53,402 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,402 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,402 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,402 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,403 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,403 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,403 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,403 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,404 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,404 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,404 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,404 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,405 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,405 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,405 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,405 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,405 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,406 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,406 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,406 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,406 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,406 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,406 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,407 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,407 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,407 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,407 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,408 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,408 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,408 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,408 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,408 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,409 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,409 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,409 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,409 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,409 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,409 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,410 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,410 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,410 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,410 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,410 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,410 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,411 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,411 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,411 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,411 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,411 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,412 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,412 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,412 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,412 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,412 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,412 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,412 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,413 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,413 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,413 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,414 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,414 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,414 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,414 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,414 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,415 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,415 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,415 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,415 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,415 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,415 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,416 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,416 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,416 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,416 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,416 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,417 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,417 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,417 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,418 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,419 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,419 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,419 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,420 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,421 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,421 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,421 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,422 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,422 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,425 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,425 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,426 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,426 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,426 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,426 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,426 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,426 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,426 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,427 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,428 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,428 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,428 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,428 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,428 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,429 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,430 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,431 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,431 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,431 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,431 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,433 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,434 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,435 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,435 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,436 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,437 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,439 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,439 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,439 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,439 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,440 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,440 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,440 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,440 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,440 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,440 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,440 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,441 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,441 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,441 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,441 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,442 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,442 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,442 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,444 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,444 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,444 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,444 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,444 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,445 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,445 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,445 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,445 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,445 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,446 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,446 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,446 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_#in~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,446 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,446 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,447 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,447 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1___VERIFIER_assert_~expression#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,447 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,450 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,450 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,450 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,450 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,450 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,450 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,451 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,451 WARN L322 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,451 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,452 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,452 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,452 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,452 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,452 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,452 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,452 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,480 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,480 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,480 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,480 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,481 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,481 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,481 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,481 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,481 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,481 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,481 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,482 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,482 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,486 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,487 WARN L322 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,488 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,488 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,488 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,488 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,489 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,489 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,489 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,489 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,489 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,490 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 02:49:53,490 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-28 02:49:53,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:49:53,544 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 02:49:53,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-28 02:49:53,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 288 flow [2021-12-28 02:49:53,619 INFO L129 PetriNetUnfolder]: 2/130 cut-off events. [2021-12-28 02:49:53,619 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-28 02:49:53,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-12-28 02:49:53,622 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 288 flow [2021-12-28 02:49:53,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 130 transitions, 272 flow [2021-12-28 02:49:53,643 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-12-28 02:49:53,644 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-28 02:49:53,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:49:53,645 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] [2021-12-28 02:49:53,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:49:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:49:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1549519353, now seen corresponding path program 1 times [2021-12-28 02:49:53,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:49:53,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339624811] [2021-12-28 02:49:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:49:53,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:49:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:49:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:49:53,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:49:53,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339624811] [2021-12-28 02:49:53,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339624811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:49:53,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:49:53,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:49:53,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160855293] [2021-12-28 02:49:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:49:53,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:49:53,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:49:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:49:53,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:49:53,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 134 [2021-12-28 02:49:53,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 130 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:53,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:49:53,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 134 [2021-12-28 02:49:53,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:49:54,137 INFO L129 PetriNetUnfolder]: 162/616 cut-off events. [2021-12-28 02:49:54,137 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-12-28 02:49:54,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 616 events. 162/616 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3411 event pairs, 132 based on Foata normal form. 36/608 useless extension candidates. Maximal degree in co-relation 867. Up to 191 conditions per place. [2021-12-28 02:49:54,147 INFO L132 encePairwiseOnDemand]: 129/134 looper letters, 18 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2021-12-28 02:49:54,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 329 flow [2021-12-28 02:49:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:49:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 02:49:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2021-12-28 02:49:54,164 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9427860696517413 [2021-12-28 02:49:54,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2021-12-28 02:49:54,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2021-12-28 02:49:54,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:49:54,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2021-12-28 02:49:54,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:54,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:54,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:54,185 INFO L186 Difference]: Start difference. First operand has 141 places, 130 transitions, 272 flow. Second operand 3 states and 379 transitions. [2021-12-28 02:49:54,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 329 flow [2021-12-28 02:49:54,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 134 transitions, 322 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-28 02:49:54,195 INFO L242 Difference]: Finished difference. Result has 137 places, 126 transitions, 264 flow [2021-12-28 02:49:54,196 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2021-12-28 02:49:54,200 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, -4 predicate places. [2021-12-28 02:49:54,201 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 264 flow [2021-12-28 02:49:54,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:54,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:49:54,202 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] [2021-12-28 02:49:54,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:49:54,203 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:49:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:49:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash 302544483, now seen corresponding path program 1 times [2021-12-28 02:49:54,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:49:54,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201131157] [2021-12-28 02:49:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:49:54,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:49:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:49:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:49:54,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:49:54,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201131157] [2021-12-28 02:49:54,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201131157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:49:54,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:49:54,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:49:54,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543939319] [2021-12-28 02:49:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:49:54,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:49:54,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:49:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:49:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:49:54,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 134 [2021-12-28 02:49:54,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:54,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:49:54,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 134 [2021-12-28 02:49:54,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:49:57,946 INFO L129 PetriNetUnfolder]: 14834/31889 cut-off events. [2021-12-28 02:49:57,946 INFO L130 PetriNetUnfolder]: For 1281/1281 co-relation queries the response was YES. [2021-12-28 02:49:58,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53631 conditions, 31889 events. 14834/31889 cut-off events. For 1281/1281 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 330882 event pairs, 1092 based on Foata normal form. 0/31231 useless extension candidates. Maximal degree in co-relation 53574. Up to 5901 conditions per place. [2021-12-28 02:49:58,129 INFO L132 encePairwiseOnDemand]: 121/134 looper letters, 46 selfloop transitions, 11 changer transitions 128/270 dead transitions. [2021-12-28 02:49:58,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 270 transitions, 924 flow [2021-12-28 02:49:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:49:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:49:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1501 transitions. [2021-12-28 02:49:58,133 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8616532721010333 [2021-12-28 02:49:58,133 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1501 transitions. [2021-12-28 02:49:58,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1501 transitions. [2021-12-28 02:49:58,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:49:58,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1501 transitions. [2021-12-28 02:49:58,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.46153846153847) internal successors, (1501), 13 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:58,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:58,142 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:58,142 INFO L186 Difference]: Start difference. First operand has 137 places, 126 transitions, 264 flow. Second operand 13 states and 1501 transitions. [2021-12-28 02:49:58,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 270 transitions, 924 flow [2021-12-28 02:49:58,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 270 transitions, 898 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-28 02:49:58,147 INFO L242 Difference]: Finished difference. Result has 159 places, 121 transitions, 360 flow [2021-12-28 02:49:58,147 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=360, PETRI_PLACES=159, PETRI_TRANSITIONS=121} [2021-12-28 02:49:58,148 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 18 predicate places. [2021-12-28 02:49:58,148 INFO L470 AbstractCegarLoop]: Abstraction has has 159 places, 121 transitions, 360 flow [2021-12-28 02:49:58,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:58,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:49:58,149 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] [2021-12-28 02:49:58,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:49:58,150 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:49:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:49:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash 881141890, now seen corresponding path program 1 times [2021-12-28 02:49:58,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:49:58,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752846489] [2021-12-28 02:49:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:49:58,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:49:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:49:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:49:58,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:49:58,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752846489] [2021-12-28 02:49:58,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752846489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:49:58,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:49:58,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:49:58,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191546239] [2021-12-28 02:49:58,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:49:58,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:49:58,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:49:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:49:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:49:58,268 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 134 [2021-12-28 02:49:58,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 121 transitions, 360 flow. Second operand has 7 states, 7 states have (on average 104.28571428571429) internal successors, (730), 7 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:49:58,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:49:58,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 134 [2021-12-28 02:49:58,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:00,545 INFO L129 PetriNetUnfolder]: 10486/17341 cut-off events. [2021-12-28 02:50:00,545 INFO L130 PetriNetUnfolder]: For 30494/30494 co-relation queries the response was YES. [2021-12-28 02:50:00,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53150 conditions, 17341 events. 10486/17341 cut-off events. For 30494/30494 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 130826 event pairs, 1277 based on Foata normal form. 334/17378 useless extension candidates. Maximal degree in co-relation 53079. Up to 4714 conditions per place. [2021-12-28 02:50:00,660 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 53 selfloop transitions, 18 changer transitions 112/268 dead transitions. [2021-12-28 02:50:00,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 268 transitions, 1538 flow [2021-12-28 02:50:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:50:00,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:50:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1488 transitions. [2021-12-28 02:50:00,664 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8541905855338691 [2021-12-28 02:50:00,664 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1488 transitions. [2021-12-28 02:50:00,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1488 transitions. [2021-12-28 02:50:00,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:00,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1488 transitions. [2021-12-28 02:50:00,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.46153846153847) internal successors, (1488), 13 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:00,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:00,671 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:00,671 INFO L186 Difference]: Start difference. First operand has 159 places, 121 transitions, 360 flow. Second operand 13 states and 1488 transitions. [2021-12-28 02:50:00,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 268 transitions, 1538 flow [2021-12-28 02:50:00,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 268 transitions, 1514 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-12-28 02:50:00,734 INFO L242 Difference]: Finished difference. Result has 157 places, 134 transitions, 584 flow [2021-12-28 02:50:00,734 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=157, PETRI_TRANSITIONS=134} [2021-12-28 02:50:00,736 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 16 predicate places. [2021-12-28 02:50:00,736 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 134 transitions, 584 flow [2021-12-28 02:50:00,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.28571428571429) internal successors, (730), 7 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:00,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:00,737 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:50:00,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:50:00,737 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:50:00,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1007244667, now seen corresponding path program 1 times [2021-12-28 02:50:00,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:00,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858819338] [2021-12-28 02:50:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:00,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:00,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:00,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858819338] [2021-12-28 02:50:00,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858819338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:00,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:00,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:00,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866320366] [2021-12-28 02:50:00,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:00,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:00,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:00,897 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 134 [2021-12-28 02:50:00,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 134 transitions, 584 flow. Second operand has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:00,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:00,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 134 [2021-12-28 02:50:00,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:03,455 INFO L129 PetriNetUnfolder]: 9493/16386 cut-off events. [2021-12-28 02:50:03,455 INFO L130 PetriNetUnfolder]: For 62873/62873 co-relation queries the response was YES. [2021-12-28 02:50:03,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58681 conditions, 16386 events. 9493/16386 cut-off events. For 62873/62873 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 128331 event pairs, 918 based on Foata normal form. 296/16320 useless extension candidates. Maximal degree in co-relation 58599. Up to 4354 conditions per place. [2021-12-28 02:50:03,647 INFO L132 encePairwiseOnDemand]: 121/134 looper letters, 61 selfloop transitions, 26 changer transitions 112/284 dead transitions. [2021-12-28 02:50:03,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 284 transitions, 2088 flow [2021-12-28 02:50:03,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:50:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:50:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1485 transitions. [2021-12-28 02:50:03,651 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8524684270952928 [2021-12-28 02:50:03,652 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1485 transitions. [2021-12-28 02:50:03,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1485 transitions. [2021-12-28 02:50:03,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:03,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1485 transitions. [2021-12-28 02:50:03,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.23076923076923) internal successors, (1485), 13 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:03,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:03,660 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:03,660 INFO L186 Difference]: Start difference. First operand has 157 places, 134 transitions, 584 flow. Second operand 13 states and 1485 transitions. [2021-12-28 02:50:03,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 284 transitions, 2088 flow [2021-12-28 02:50:04,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 284 transitions, 1998 flow, removed 45 selfloop flow, removed 3 redundant places. [2021-12-28 02:50:04,031 INFO L242 Difference]: Finished difference. Result has 169 places, 149 transitions, 900 flow [2021-12-28 02:50:04,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=900, PETRI_PLACES=169, PETRI_TRANSITIONS=149} [2021-12-28 02:50:04,033 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 28 predicate places. [2021-12-28 02:50:04,033 INFO L470 AbstractCegarLoop]: Abstraction has has 169 places, 149 transitions, 900 flow [2021-12-28 02:50:04,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.42857142857143) internal successors, (731), 7 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:04,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:04,034 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:50:04,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:50:04,034 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:50:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1196002142, now seen corresponding path program 1 times [2021-12-28 02:50:04,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:04,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724490192] [2021-12-28 02:50:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:04,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:04,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:04,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724490192] [2021-12-28 02:50:04,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724490192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:04,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:04,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:04,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738292163] [2021-12-28 02:50:04,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:04,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:04,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:04,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:04,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:04,175 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 134 [2021-12-28 02:50:04,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 149 transitions, 900 flow. Second operand has 7 states, 7 states have (on average 104.57142857142857) internal successors, (732), 7 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:04,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:04,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 134 [2021-12-28 02:50:04,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:07,404 INFO L129 PetriNetUnfolder]: 10753/19590 cut-off events. [2021-12-28 02:50:07,405 INFO L130 PetriNetUnfolder]: For 98877/98955 co-relation queries the response was YES. [2021-12-28 02:50:07,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72875 conditions, 19590 events. 10753/19590 cut-off events. For 98877/98955 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 168694 event pairs, 1280 based on Foata normal form. 328/19288 useless extension candidates. Maximal degree in co-relation 72780. Up to 4640 conditions per place. [2021-12-28 02:50:07,617 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 61 selfloop transitions, 37 changer transitions 99/282 dead transitions. [2021-12-28 02:50:07,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 282 transitions, 2310 flow [2021-12-28 02:50:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:50:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:50:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1477 transitions. [2021-12-28 02:50:07,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8478760045924225 [2021-12-28 02:50:07,621 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1477 transitions. [2021-12-28 02:50:07,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1477 transitions. [2021-12-28 02:50:07,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:07,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1477 transitions. [2021-12-28 02:50:07,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.61538461538461) internal successors, (1477), 13 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:07,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:07,627 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:07,627 INFO L186 Difference]: Start difference. First operand has 169 places, 149 transitions, 900 flow. Second operand 13 states and 1477 transitions. [2021-12-28 02:50:07,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 282 transitions, 2310 flow [2021-12-28 02:50:07,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 282 transitions, 2226 flow, removed 42 selfloop flow, removed 6 redundant places. [2021-12-28 02:50:07,916 INFO L242 Difference]: Finished difference. Result has 178 places, 156 transitions, 1156 flow [2021-12-28 02:50:07,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1156, PETRI_PLACES=178, PETRI_TRANSITIONS=156} [2021-12-28 02:50:07,917 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 37 predicate places. [2021-12-28 02:50:07,917 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 156 transitions, 1156 flow [2021-12-28 02:50:07,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.57142857142857) internal successors, (732), 7 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:07,918 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:07,918 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:50:07,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:50:07,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:50:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash -969993431, now seen corresponding path program 1 times [2021-12-28 02:50:07,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:07,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962600145] [2021-12-28 02:50:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:07,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:08,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:08,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962600145] [2021-12-28 02:50:08,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962600145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:08,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:08,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:08,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803348620] [2021-12-28 02:50:08,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:08,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:08,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:08,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:08,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:08,029 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 134 [2021-12-28 02:50:08,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 156 transitions, 1156 flow. Second operand has 7 states, 7 states have (on average 104.57142857142857) internal successors, (732), 7 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:08,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:08,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 134 [2021-12-28 02:50:08,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:11,880 INFO L129 PetriNetUnfolder]: 13137/23053 cut-off events. [2021-12-28 02:50:11,880 INFO L130 PetriNetUnfolder]: For 172064/172091 co-relation queries the response was YES. [2021-12-28 02:50:12,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95568 conditions, 23053 events. 13137/23053 cut-off events. For 172064/172091 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 195680 event pairs, 2774 based on Foata normal form. 332/22866 useless extension candidates. Maximal degree in co-relation 95465. Up to 6432 conditions per place. [2021-12-28 02:50:12,141 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 64 selfloop transitions, 38 changer transitions 120/307 dead transitions. [2021-12-28 02:50:12,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 307 transitions, 3098 flow [2021-12-28 02:50:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 02:50:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 02:50:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1479 transitions. [2021-12-28 02:50:12,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8490241102181401 [2021-12-28 02:50:12,145 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1479 transitions. [2021-12-28 02:50:12,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1479 transitions. [2021-12-28 02:50:12,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:12,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1479 transitions. [2021-12-28 02:50:12,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.76923076923077) internal successors, (1479), 13 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:12,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:12,152 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 134.0) internal successors, (1876), 14 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:12,152 INFO L186 Difference]: Start difference. First operand has 178 places, 156 transitions, 1156 flow. Second operand 13 states and 1479 transitions. [2021-12-28 02:50:12,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 307 transitions, 3098 flow [2021-12-28 02:50:12,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 307 transitions, 3046 flow, removed 26 selfloop flow, removed 9 redundant places. [2021-12-28 02:50:12,320 INFO L242 Difference]: Finished difference. Result has 184 places, 159 transitions, 1416 flow [2021-12-28 02:50:12,320 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1416, PETRI_PLACES=184, PETRI_TRANSITIONS=159} [2021-12-28 02:50:12,321 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 43 predicate places. [2021-12-28 02:50:12,321 INFO L470 AbstractCegarLoop]: Abstraction has has 184 places, 159 transitions, 1416 flow [2021-12-28 02:50:12,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.57142857142857) internal successors, (732), 7 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:12,322 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:12,322 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] [2021-12-28 02:50:12,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:50:12,322 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:50:12,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash -869563300, now seen corresponding path program 1 times [2021-12-28 02:50:12,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:12,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993722965] [2021-12-28 02:50:12,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:12,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:12,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:12,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993722965] [2021-12-28 02:50:12,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993722965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:12,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:12,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:50:12,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059186158] [2021-12-28 02:50:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:12,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:50:12,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:50:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:50:12,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 134 [2021-12-28 02:50:12,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 159 transitions, 1416 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:12,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:12,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 134 [2021-12-28 02:50:12,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:24,916 INFO L129 PetriNetUnfolder]: 45128/77164 cut-off events. [2021-12-28 02:50:24,916 INFO L130 PetriNetUnfolder]: For 404520/481401 co-relation queries the response was YES. [2021-12-28 02:50:25,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202915 conditions, 77164 events. 45128/77164 cut-off events. For 404520/481401 co-relation queries the response was YES. Maximal size of possible extension queue 4347. Compared 753235 event pairs, 2722 based on Foata normal form. 2852/76840 useless extension candidates. Maximal degree in co-relation 202810. Up to 25858 conditions per place. [2021-12-28 02:50:25,978 INFO L132 encePairwiseOnDemand]: 123/134 looper letters, 125 selfloop transitions, 20 changer transitions 0/276 dead transitions. [2021-12-28 02:50:25,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 276 transitions, 2856 flow [2021-12-28 02:50:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:50:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-28 02:50:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1177 transitions. [2021-12-28 02:50:25,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8783582089552239 [2021-12-28 02:50:25,982 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1177 transitions. [2021-12-28 02:50:25,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1177 transitions. [2021-12-28 02:50:25,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:25,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1177 transitions. [2021-12-28 02:50:25,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.7) internal successors, (1177), 10 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:25,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:25,986 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:25,987 INFO L186 Difference]: Start difference. First operand has 184 places, 159 transitions, 1416 flow. Second operand 10 states and 1177 transitions. [2021-12-28 02:50:25,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 276 transitions, 2856 flow [2021-12-28 02:50:26,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 276 transitions, 2840 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-12-28 02:50:26,194 INFO L242 Difference]: Finished difference. Result has 186 places, 177 transitions, 1543 flow [2021-12-28 02:50:26,194 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=186, PETRI_TRANSITIONS=177} [2021-12-28 02:50:26,195 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 45 predicate places. [2021-12-28 02:50:26,195 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 177 transitions, 1543 flow [2021-12-28 02:50:26,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:26,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:26,196 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] [2021-12-28 02:50:26,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:50:26,196 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:50:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:26,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1776004450, now seen corresponding path program 1 times [2021-12-28 02:50:26,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:26,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298766676] [2021-12-28 02:50:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:26,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:26,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:26,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298766676] [2021-12-28 02:50:26,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298766676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:26,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:26,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:50:26,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706425990] [2021-12-28 02:50:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:26,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:50:26,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:26,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:50:26,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:50:26,260 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 134 [2021-12-28 02:50:26,261 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 177 transitions, 1543 flow. Second operand has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:26,261 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:26,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 134 [2021-12-28 02:50:26,261 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 02:50:33,660 INFO L129 PetriNetUnfolder]: 14270/40894 cut-off events. [2021-12-28 02:50:33,661 INFO L130 PetriNetUnfolder]: For 196249/206711 co-relation queries the response was YES. [2021-12-28 02:50:34,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129925 conditions, 40894 events. 14270/40894 cut-off events. For 196249/206711 co-relation queries the response was YES. Maximal size of possible extension queue 3071. Compared 571785 event pairs, 5650 based on Foata normal form. 1686/39282 useless extension candidates. Maximal degree in co-relation 129815. Up to 8484 conditions per place. [2021-12-28 02:50:34,440 INFO L132 encePairwiseOnDemand]: 128/134 looper letters, 80 selfloop transitions, 29 changer transitions 12/254 dead transitions. [2021-12-28 02:50:34,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 254 transitions, 2739 flow [2021-12-28 02:50:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 02:50:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 02:50:34,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2021-12-28 02:50:34,443 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8764510779436152 [2021-12-28 02:50:34,443 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2021-12-28 02:50:34,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2021-12-28 02:50:34,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 02:50:34,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2021-12-28 02:50:34,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,448 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 134.0) internal successors, (1340), 10 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:34,448 INFO L186 Difference]: Start difference. First operand has 186 places, 177 transitions, 1543 flow. Second operand 9 states and 1057 transitions. [2021-12-28 02:50:34,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 254 transitions, 2739 flow [2021-12-28 02:50:35,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 254 transitions, 2717 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-12-28 02:50:35,305 INFO L242 Difference]: Finished difference. Result has 198 places, 188 transitions, 1811 flow [2021-12-28 02:50:35,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1811, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2021-12-28 02:50:35,307 INFO L334 CegarLoopForPetriNet]: 141 programPoint places, 57 predicate places. [2021-12-28 02:50:35,307 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 1811 flow [2021-12-28 02:50:35,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 02:50:35,308 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] [2021-12-28 02:50:35,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:50:35,308 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-12-28 02:50:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:50:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1820924516, now seen corresponding path program 1 times [2021-12-28 02:50:35,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:50:35,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237826992] [2021-12-28 02:50:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:50:35,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:50:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:50:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:50:35,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:50:35,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237826992] [2021-12-28 02:50:35,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237826992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:50:35,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:50:35,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:50:35,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248528958] [2021-12-28 02:50:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:50:35,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:50:35,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:50:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:50:35,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:50:35,444 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 134 [2021-12-28 02:50:35,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 1811 flow. Second operand has 7 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:50:35,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 02:50:35,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 134 [2021-12-28 02:50:35,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand