./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G --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 cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:24:33,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:24:33,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:24:33,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:24:33,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:24:33,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:24:33,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:24:33,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:24:33,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:24:33,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:24:33,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:24:33,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:24:33,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:24:33,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:24:33,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:24:33,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:24:33,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:24:33,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:24:33,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:24:33,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:24:33,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:24:33,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:24:33,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:24:33,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:24:33,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:24:33,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:24:33,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:24:33,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:24:33,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:24:33,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:24:33,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:24:33,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:24:33,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:24:33,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:24:33,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:24:33,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:24:33,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:24:33,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:24:33,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:24:33,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:24:33,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:24:33,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:24:33,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:24:33,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:24:33,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:24:33,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:24:33,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:24:33,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:24:33,732 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:24:33,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:24:33,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:24:33,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:24:33,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:24:33,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:24:33,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:24:33,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:24:33,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:24:33,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:24:33,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:24:33,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:24:33,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:24:33,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:24:33,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:24:33,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:24:33,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:24:33,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:24:33,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:24:33,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:24:33,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:24:33,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:24:33,741 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:24:33,743 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:24:33,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:24:33,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:24:33,744 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2021-11-23 12:24:34,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:24:34,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:24:34,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:24:34,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:24:34,095 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:24:34,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2021-11-23 12:24:34,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/data/afeb0a15a/631d60105f6948d2b1652aa26cc6c365/FLAGe9c97cec1 [2021-11-23 12:24:34,811 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:24:34,812 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2021-11-23 12:24:34,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/data/afeb0a15a/631d60105f6948d2b1652aa26cc6c365/FLAGe9c97cec1 [2021-11-23 12:24:35,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/data/afeb0a15a/631d60105f6948d2b1652aa26cc6c365 [2021-11-23 12:24:35,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:24:35,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:24:35,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:24:35,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:24:35,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:24:35,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c71ec17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35, skipping insertion in model container [2021-11-23 12:24:35,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:24:35,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:24:35,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2021-11-23 12:24:35,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:24:35,487 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:24:35,515 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2021-11-23 12:24:35,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:24:35,537 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:24:35,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35 WrapperNode [2021-11-23 12:24:35,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:24:35,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:24:35,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:24:35,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:24:35,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,598 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 130 [2021-11-23 12:24:35,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:24:35,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:24:35,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:24:35,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:24:35,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:24:35,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:24:35,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:24:35,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:24:35,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (1/1) ... [2021-11-23 12:24:35,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:24:35,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:24:35,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:24:35,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8005c22-8b72-4d3c-b743-2c8652d1135d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:24:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:24:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-23 12:24:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-23 12:24:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-23 12:24:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-23 12:24:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:24:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:24:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:24:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:24:35,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:24:35,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:24:35,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:24:35,748 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 12:24:35,855 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:24:35,857 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:24:36,268 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:24:36,283 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:24:36,283 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:24:36,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:24:36 BoogieIcfgContainer [2021-11-23 12:24:36,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:24:36,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:24:36,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:24:36,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:24:36,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:24:35" (1/3) ... [2021-11-23 12:24:36,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8e910e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:24:36, skipping insertion in model container [2021-11-23 12:24:36,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:35" (2/3) ... [2021-11-23 12:24:36,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8e910e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:24:36, skipping insertion in model container [2021-11-23 12:24:36,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:24:36" (3/3) ... [2021-11-23 12:24:36,305 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2021-11-23 12:24:36,312 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 12:24:36,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:24:36,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:24:36,313 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 12:24:36,372 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,379 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,387 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,393 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,394 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,394 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,395 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,395 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,395 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,396 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,396 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,396 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,396 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,397 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,403 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,404 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,404 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,404 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,405 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,420 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,421 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,423 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,424 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,426 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,434 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,435 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,439 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,440 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,441 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,444 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,444 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,444 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,444 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,445 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,448 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,448 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,449 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,449 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,449 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,450 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,450 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,450 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,456 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,457 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,457 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,457 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,457 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,458 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,459 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,460 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,461 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,461 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,461 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,461 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,462 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,462 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,462 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,462 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,463 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,464 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,464 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,464 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,464 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,501 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,502 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,503 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,504 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,504 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,504 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,504 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,514 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,515 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,516 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,521 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,521 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,521 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,521 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,523 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,524 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,528 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 12:24:36,532 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-23 12:24:36,624 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:24:36,644 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 [2021-11-23 12:24:36,657 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 12:24:36,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 176 transitions, 368 flow [2021-11-23 12:24:36,821 INFO L129 PetriNetUnfolder]: 13/174 cut-off events. [2021-11-23 12:24:36,826 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-23 12:24:36,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 13/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 289 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2021-11-23 12:24:36,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 176 transitions, 368 flow [2021-11-23 12:24:36,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 165 transitions, 342 flow [2021-11-23 12:24:36,907 INFO L129 PetriNetUnfolder]: 13/164 cut-off events. [2021-11-23 12:24:36,908 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-23 12:24:36,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:36,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:36,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1782218821, now seen corresponding path program 1 times [2021-11-23 12:24:36,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:36,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035613074] [2021-11-23 12:24:36,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:36,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:37,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:37,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035613074] [2021-11-23 12:24:37,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035613074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:37,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:37,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:37,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650101591] [2021-11-23 12:24:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:37,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:37,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:37,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:37,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:37,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 165 transitions, 342 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:37,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:37,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:37,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:38,718 INFO L129 PetriNetUnfolder]: 107/482 cut-off events. [2021-11-23 12:24:38,718 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2021-11-23 12:24:38,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 482 events. 107/482 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2371 event pairs, 35 based on Foata normal form. 26/479 useless extension candidates. Maximal degree in co-relation 568. Up to 123 conditions per place. [2021-11-23 12:24:38,737 INFO L132 encePairwiseOnDemand]: 155/176 looper letters, 81 selfloop transitions, 5 changer transitions 44/253 dead transitions. [2021-11-23 12:24:38,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 253 transitions, 808 flow [2021-11-23 12:24:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 12:24:38,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-23 12:24:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3478 transitions. [2021-11-23 12:24:38,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7904545454545454 [2021-11-23 12:24:38,782 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3478 transitions. [2021-11-23 12:24:38,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3478 transitions. [2021-11-23 12:24:38,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:38,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3478 transitions. [2021-11-23 12:24:38,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 139.12) internal successors, (3478), 25 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:38,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 176.0) internal successors, (4576), 26 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:38,872 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 176.0) internal successors, (4576), 26 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:38,875 INFO L186 Difference]: Start difference. First operand has 159 places, 165 transitions, 342 flow. Second operand 25 states and 3478 transitions. [2021-11-23 12:24:38,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 253 transitions, 808 flow [2021-11-23 12:24:38,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 253 transitions, 780 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-23 12:24:38,897 INFO L242 Difference]: Finished difference. Result has 201 places, 159 transitions, 405 flow [2021-11-23 12:24:38,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=405, PETRI_PLACES=201, PETRI_TRANSITIONS=159} [2021-11-23 12:24:38,905 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 42 predicate places. [2021-11-23 12:24:38,906 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 159 transitions, 405 flow [2021-11-23 12:24:38,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:38,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:38,908 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:38,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:24:38,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:38,910 INFO L85 PathProgramCache]: Analyzing trace with hash 346921447, now seen corresponding path program 1 times [2021-11-23 12:24:38,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:38,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880255395] [2021-11-23 12:24:38,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:38,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:39,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:39,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880255395] [2021-11-23 12:24:39,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880255395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:39,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:39,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:39,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049598161] [2021-11-23 12:24:39,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:39,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:39,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:39,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:39,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:39,042 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-11-23 12:24:39,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 159 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:39,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-11-23 12:24:39,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:39,205 INFO L129 PetriNetUnfolder]: 59/602 cut-off events. [2021-11-23 12:24:39,205 INFO L130 PetriNetUnfolder]: For 894/932 co-relation queries the response was YES. [2021-11-23 12:24:39,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 602 events. 59/602 cut-off events. For 894/932 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3216 event pairs, 30 based on Foata normal form. 4/547 useless extension candidates. Maximal degree in co-relation 1109. Up to 42 conditions per place. [2021-11-23 12:24:39,217 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 13 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2021-11-23 12:24:39,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 456 flow [2021-11-23 12:24:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 12:24:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-11-23 12:24:39,220 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-11-23 12:24:39,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-11-23 12:24:39,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-11-23 12:24:39,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:39,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-11-23 12:24:39,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,227 INFO L186 Difference]: Start difference. First operand has 201 places, 159 transitions, 405 flow. Second operand 3 states and 489 transitions. [2021-11-23 12:24:39,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 456 flow [2021-11-23 12:24:39,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 437 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-11-23 12:24:39,252 INFO L242 Difference]: Finished difference. Result has 174 places, 162 transitions, 424 flow [2021-11-23 12:24:39,253 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2021-11-23 12:24:39,254 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2021-11-23 12:24:39,255 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 424 flow [2021-11-23 12:24:39,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:39,256 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:39,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:24:39,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:39,259 INFO L85 PathProgramCache]: Analyzing trace with hash -250466245, now seen corresponding path program 2 times [2021-11-23 12:24:39,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:39,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623112514] [2021-11-23 12:24:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:39,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:39,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:39,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623112514] [2021-11-23 12:24:39,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623112514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:39,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:39,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:39,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152657032] [2021-11-23 12:24:39,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:39,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:39,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:39,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-11-23 12:24:39,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:39,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-11-23 12:24:39,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:39,552 INFO L129 PetriNetUnfolder]: 38/491 cut-off events. [2021-11-23 12:24:39,552 INFO L130 PetriNetUnfolder]: For 415/432 co-relation queries the response was YES. [2021-11-23 12:24:39,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 491 events. 38/491 cut-off events. For 415/432 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2367 event pairs, 25 based on Foata normal form. 5/461 useless extension candidates. Maximal degree in co-relation 582. Up to 26 conditions per place. [2021-11-23 12:24:39,560 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 18 selfloop transitions, 3 changer transitions 2/168 dead transitions. [2021-11-23 12:24:39,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 487 flow [2021-11-23 12:24:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 12:24:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-11-23 12:24:39,564 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-11-23 12:24:39,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-11-23 12:24:39,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-11-23 12:24:39,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:39,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-11-23 12:24:39,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,570 INFO L186 Difference]: Start difference. First operand has 174 places, 162 transitions, 424 flow. Second operand 3 states and 489 transitions. [2021-11-23 12:24:39,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 487 flow [2021-11-23 12:24:39,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 477 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-23 12:24:39,586 INFO L242 Difference]: Finished difference. Result has 176 places, 163 transitions, 446 flow [2021-11-23 12:24:39,587 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=176, PETRI_TRANSITIONS=163} [2021-11-23 12:24:39,590 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2021-11-23 12:24:39,591 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 163 transitions, 446 flow [2021-11-23 12:24:39,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:39,592 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:39,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:24:39,593 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:39,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1510269733, now seen corresponding path program 1 times [2021-11-23 12:24:39,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:39,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199783574] [2021-11-23 12:24:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:39,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:39,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:39,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199783574] [2021-11-23 12:24:39,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199783574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:39,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:39,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:39,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127809998] [2021-11-23 12:24:39,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:39,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:39,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:39,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:39,924 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:39,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 163 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:39,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:39,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:39,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:40,504 INFO L129 PetriNetUnfolder]: 189/899 cut-off events. [2021-11-23 12:24:40,505 INFO L130 PetriNetUnfolder]: For 1062/1086 co-relation queries the response was YES. [2021-11-23 12:24:40,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 899 events. 189/899 cut-off events. For 1062/1086 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5534 event pairs, 53 based on Foata normal form. 5/857 useless extension candidates. Maximal degree in co-relation 1516. Up to 180 conditions per place. [2021-11-23 12:24:40,519 INFO L132 encePairwiseOnDemand]: 161/176 looper letters, 72 selfloop transitions, 22 changer transitions 34/256 dead transitions. [2021-11-23 12:24:40,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 256 transitions, 1069 flow [2021-11-23 12:24:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 12:24:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-23 12:24:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2251 transitions. [2021-11-23 12:24:40,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7993607954545454 [2021-11-23 12:24:40,530 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2251 transitions. [2021-11-23 12:24:40,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2251 transitions. [2021-11-23 12:24:40,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:40,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2251 transitions. [2021-11-23 12:24:40,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 140.6875) internal successors, (2251), 16 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,552 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,552 INFO L186 Difference]: Start difference. First operand has 176 places, 163 transitions, 446 flow. Second operand 16 states and 2251 transitions. [2021-11-23 12:24:40,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 256 transitions, 1069 flow [2021-11-23 12:24:40,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 256 transitions, 1060 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-11-23 12:24:40,572 INFO L242 Difference]: Finished difference. Result has 200 places, 184 transitions, 670 flow [2021-11-23 12:24:40,574 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=670, PETRI_PLACES=200, PETRI_TRANSITIONS=184} [2021-11-23 12:24:40,581 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 41 predicate places. [2021-11-23 12:24:40,581 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 184 transitions, 670 flow [2021-11-23 12:24:40,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:40,583 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:40,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:24:40,584 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1403497175, now seen corresponding path program 1 times [2021-11-23 12:24:40,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:40,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489814086] [2021-11-23 12:24:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:40,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:40,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:40,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489814086] [2021-11-23 12:24:40,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489814086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:40,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:40,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:40,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500251290] [2021-11-23 12:24:40,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:40,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:40,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:40,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:40,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:40,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-11-23 12:24:40,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 184 transitions, 670 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:40,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-11-23 12:24:40,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:40,941 INFO L129 PetriNetUnfolder]: 91/893 cut-off events. [2021-11-23 12:24:40,941 INFO L130 PetriNetUnfolder]: For 1700/1718 co-relation queries the response was YES. [2021-11-23 12:24:40,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 893 events. 91/893 cut-off events. For 1700/1718 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5773 event pairs, 46 based on Foata normal form. 4/855 useless extension candidates. Maximal degree in co-relation 2080. Up to 77 conditions per place. [2021-11-23 12:24:40,954 INFO L132 encePairwiseOnDemand]: 168/176 looper letters, 12 selfloop transitions, 5 changer transitions 2/190 dead transitions. [2021-11-23 12:24:40,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 190 transitions, 721 flow [2021-11-23 12:24:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 12:24:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-11-23 12:24:40,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-11-23 12:24:40,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-11-23 12:24:40,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-11-23 12:24:40,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:40,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-11-23 12:24:40,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,963 INFO L186 Difference]: Start difference. First operand has 200 places, 184 transitions, 670 flow. Second operand 3 states and 489 transitions. [2021-11-23 12:24:40,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 190 transitions, 721 flow [2021-11-23 12:24:40,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 190 transitions, 671 flow, removed 25 selfloop flow, removed 5 redundant places. [2021-11-23 12:24:40,988 INFO L242 Difference]: Finished difference. Result has 193 places, 185 transitions, 648 flow [2021-11-23 12:24:40,989 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=193, PETRI_TRANSITIONS=185} [2021-11-23 12:24:40,990 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 34 predicate places. [2021-11-23 12:24:40,990 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 185 transitions, 648 flow [2021-11-23 12:24:40,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:40,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:40,991 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:40,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:24:40,992 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash -749552169, now seen corresponding path program 2 times [2021-11-23 12:24:40,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:40,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401796788] [2021-11-23 12:24:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:40,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:41,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:41,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401796788] [2021-11-23 12:24:41,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401796788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:41,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:41,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:41,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799589809] [2021-11-23 12:24:41,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:41,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:41,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:41,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:41,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:41,193 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:41,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 185 transitions, 648 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:41,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:41,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:41,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:42,000 INFO L129 PetriNetUnfolder]: 220/1325 cut-off events. [2021-11-23 12:24:42,001 INFO L130 PetriNetUnfolder]: For 2111/2120 co-relation queries the response was YES. [2021-11-23 12:24:42,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 1325 events. 220/1325 cut-off events. For 2111/2120 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9458 event pairs, 109 based on Foata normal form. 2/1276 useless extension candidates. Maximal degree in co-relation 2865. Up to 437 conditions per place. [2021-11-23 12:24:42,019 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 116 selfloop transitions, 6 changer transitions 41/293 dead transitions. [2021-11-23 12:24:42,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 293 transitions, 1586 flow [2021-11-23 12:24:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 12:24:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-23 12:24:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3313 transitions. [2021-11-23 12:24:42,035 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7843276515151515 [2021-11-23 12:24:42,035 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3313 transitions. [2021-11-23 12:24:42,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3313 transitions. [2021-11-23 12:24:42,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:42,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3313 transitions. [2021-11-23 12:24:42,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 138.04166666666666) internal successors, (3313), 24 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,068 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,068 INFO L186 Difference]: Start difference. First operand has 193 places, 185 transitions, 648 flow. Second operand 24 states and 3313 transitions. [2021-11-23 12:24:42,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 293 transitions, 1586 flow [2021-11-23 12:24:42,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 293 transitions, 1576 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-23 12:24:42,104 INFO L242 Difference]: Finished difference. Result has 235 places, 189 transitions, 754 flow [2021-11-23 12:24:42,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=754, PETRI_PLACES=235, PETRI_TRANSITIONS=189} [2021-11-23 12:24:42,109 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 76 predicate places. [2021-11-23 12:24:42,109 INFO L470 AbstractCegarLoop]: Abstraction has has 235 places, 189 transitions, 754 flow [2021-11-23 12:24:42,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:42,112 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:42,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:24:42,112 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash -26456751, now seen corresponding path program 1 times [2021-11-23 12:24:42,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:42,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371612358] [2021-11-23 12:24:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:42,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:42,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:42,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371612358] [2021-11-23 12:24:42,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371612358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:42,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:42,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:42,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576628449] [2021-11-23 12:24:42,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:42,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:42,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:42,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:42,164 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 176 [2021-11-23 12:24:42,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 189 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:42,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 176 [2021-11-23 12:24:42,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:42,366 INFO L129 PetriNetUnfolder]: 39/587 cut-off events. [2021-11-23 12:24:42,366 INFO L130 PetriNetUnfolder]: For 1478/1535 co-relation queries the response was YES. [2021-11-23 12:24:42,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 587 events. 39/587 cut-off events. For 1478/1535 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3245 event pairs, 24 based on Foata normal form. 10/571 useless extension candidates. Maximal degree in co-relation 1339. Up to 44 conditions per place. [2021-11-23 12:24:42,376 INFO L132 encePairwiseOnDemand]: 170/176 looper letters, 16 selfloop transitions, 3 changer transitions 12/185 dead transitions. [2021-11-23 12:24:42,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 185 transitions, 746 flow [2021-11-23 12:24:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-23 12:24:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2021-11-23 12:24:42,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9261363636363636 [2021-11-23 12:24:42,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2021-11-23 12:24:42,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2021-11-23 12:24:42,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:42,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2021-11-23 12:24:42,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,386 INFO L186 Difference]: Start difference. First operand has 235 places, 189 transitions, 754 flow. Second operand 3 states and 489 transitions. [2021-11-23 12:24:42,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 185 transitions, 746 flow [2021-11-23 12:24:42,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 185 transitions, 679 flow, removed 30 selfloop flow, removed 13 redundant places. [2021-11-23 12:24:42,408 INFO L242 Difference]: Finished difference. Result has 207 places, 170 transitions, 586 flow [2021-11-23 12:24:42,409 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=207, PETRI_TRANSITIONS=170} [2021-11-23 12:24:42,410 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 48 predicate places. [2021-11-23 12:24:42,411 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 170 transitions, 586 flow [2021-11-23 12:24:42,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,411 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:42,412 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:42,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:24:42,412 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1239491335, now seen corresponding path program 1 times [2021-11-23 12:24:42,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:42,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923582702] [2021-11-23 12:24:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:42,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:42,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:42,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923582702] [2021-11-23 12:24:42,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923582702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:42,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:42,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:42,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116083966] [2021-11-23 12:24:42,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:42,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:42,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:42,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:42,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 170 transitions, 586 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:42,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:42,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:42,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:43,323 INFO L129 PetriNetUnfolder]: 119/762 cut-off events. [2021-11-23 12:24:43,324 INFO L130 PetriNetUnfolder]: For 1968/1985 co-relation queries the response was YES. [2021-11-23 12:24:43,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2122 conditions, 762 events. 119/762 cut-off events. For 1968/1985 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4413 event pairs, 55 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 1771. Up to 200 conditions per place. [2021-11-23 12:24:43,337 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 77 selfloop transitions, 6 changer transitions 37/250 dead transitions. [2021-11-23 12:24:43,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 250 transitions, 1290 flow [2021-11-23 12:24:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 12:24:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-23 12:24:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3303 transitions. [2021-11-23 12:24:43,353 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819602272727273 [2021-11-23 12:24:43,353 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3303 transitions. [2021-11-23 12:24:43,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3303 transitions. [2021-11-23 12:24:43,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:43,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3303 transitions. [2021-11-23 12:24:43,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.625) internal successors, (3303), 24 states have internal predecessors, (3303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:43,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:43,385 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:43,385 INFO L186 Difference]: Start difference. First operand has 207 places, 170 transitions, 586 flow. Second operand 24 states and 3303 transitions. [2021-11-23 12:24:43,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 250 transitions, 1290 flow [2021-11-23 12:24:43,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 250 transitions, 1133 flow, removed 76 selfloop flow, removed 14 redundant places. [2021-11-23 12:24:43,407 INFO L242 Difference]: Finished difference. Result has 232 places, 175 transitions, 665 flow [2021-11-23 12:24:43,408 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=665, PETRI_PLACES=232, PETRI_TRANSITIONS=175} [2021-11-23 12:24:43,412 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 73 predicate places. [2021-11-23 12:24:43,412 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 175 transitions, 665 flow [2021-11-23 12:24:43,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:43,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:43,425 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:43,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:24:43,426 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:43,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 633918351, now seen corresponding path program 3 times [2021-11-23 12:24:43,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:43,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348401386] [2021-11-23 12:24:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:43,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:43,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:43,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:43,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348401386] [2021-11-23 12:24:43,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348401386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:43,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:43,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:43,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028122996] [2021-11-23 12:24:43,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:43,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:43,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:43,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:43,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:43,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 175 transitions, 665 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:43,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:43,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:43,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:44,202 INFO L129 PetriNetUnfolder]: 127/787 cut-off events. [2021-11-23 12:24:44,202 INFO L130 PetriNetUnfolder]: For 2110/2133 co-relation queries the response was YES. [2021-11-23 12:24:44,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 787 events. 127/787 cut-off events. For 2110/2133 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4612 event pairs, 68 based on Foata normal form. 9/760 useless extension candidates. Maximal degree in co-relation 2260. Up to 239 conditions per place. [2021-11-23 12:24:44,217 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 16 changer transitions 25/231 dead transitions. [2021-11-23 12:24:44,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1206 flow [2021-11-23 12:24:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:24:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 12:24:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2347 transitions. [2021-11-23 12:24:44,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7844251336898396 [2021-11-23 12:24:44,226 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2347 transitions. [2021-11-23 12:24:44,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2347 transitions. [2021-11-23 12:24:44,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:44,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2347 transitions. [2021-11-23 12:24:44,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.05882352941177) internal successors, (2347), 17 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:44,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:44,244 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:44,245 INFO L186 Difference]: Start difference. First operand has 232 places, 175 transitions, 665 flow. Second operand 17 states and 2347 transitions. [2021-11-23 12:24:44,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1206 flow [2021-11-23 12:24:44,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 1163 flow, removed 21 selfloop flow, removed 12 redundant places. [2021-11-23 12:24:44,271 INFO L242 Difference]: Finished difference. Result has 231 places, 190 transitions, 817 flow [2021-11-23 12:24:44,271 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=817, PETRI_PLACES=231, PETRI_TRANSITIONS=190} [2021-11-23 12:24:44,272 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 72 predicate places. [2021-11-23 12:24:44,273 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 190 transitions, 817 flow [2021-11-23 12:24:44,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:44,274 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:44,274 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:44,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:24:44,275 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1319299375, now seen corresponding path program 2 times [2021-11-23 12:24:44,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:44,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229829709] [2021-11-23 12:24:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:44,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:44,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:44,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229829709] [2021-11-23 12:24:44,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229829709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:44,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:44,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:44,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274723954] [2021-11-23 12:24:44,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:44,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:44,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:44,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:44,467 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:44,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 190 transitions, 817 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:44,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:44,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:44,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:45,050 INFO L129 PetriNetUnfolder]: 173/899 cut-off events. [2021-11-23 12:24:45,050 INFO L130 PetriNetUnfolder]: For 2352/2367 co-relation queries the response was YES. [2021-11-23 12:24:45,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 899 events. 173/899 cut-off events. For 2352/2367 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5302 event pairs, 79 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 2845. Up to 281 conditions per place. [2021-11-23 12:24:45,068 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 16 changer transitions 23/250 dead transitions. [2021-11-23 12:24:45,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 250 transitions, 1533 flow [2021-11-23 12:24:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:24:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 12:24:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2346 transitions. [2021-11-23 12:24:45,075 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2021-11-23 12:24:45,076 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2346 transitions. [2021-11-23 12:24:45,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2346 transitions. [2021-11-23 12:24:45,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:45,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2346 transitions. [2021-11-23 12:24:45,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,091 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,092 INFO L186 Difference]: Start difference. First operand has 231 places, 190 transitions, 817 flow. Second operand 17 states and 2346 transitions. [2021-11-23 12:24:45,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 250 transitions, 1533 flow [2021-11-23 12:24:45,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 250 transitions, 1506 flow, removed 11 selfloop flow, removed 9 redundant places. [2021-11-23 12:24:45,120 INFO L242 Difference]: Finished difference. Result has 241 places, 208 transitions, 1049 flow [2021-11-23 12:24:45,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1049, PETRI_PLACES=241, PETRI_TRANSITIONS=208} [2021-11-23 12:24:45,122 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 82 predicate places. [2021-11-23 12:24:45,122 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 208 transitions, 1049 flow [2021-11-23 12:24:45,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,123 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:45,123 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:45,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:24:45,124 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash -321024153, now seen corresponding path program 3 times [2021-11-23 12:24:45,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:45,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28213707] [2021-11-23 12:24:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:45,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:45,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:45,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28213707] [2021-11-23 12:24:45,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28213707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:45,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:45,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:45,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69870309] [2021-11-23 12:24:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:45,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:45,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:45,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:45,330 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:45,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 208 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:45,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:45,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:45,845 INFO L129 PetriNetUnfolder]: 179/902 cut-off events. [2021-11-23 12:24:45,846 INFO L130 PetriNetUnfolder]: For 3247/3265 co-relation queries the response was YES. [2021-11-23 12:24:45,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 902 events. 179/902 cut-off events. For 3247/3265 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5318 event pairs, 71 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 3148. Up to 292 conditions per place. [2021-11-23 12:24:45,863 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 81 selfloop transitions, 21 changer transitions 20/257 dead transitions. [2021-11-23 12:24:45,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 257 transitions, 1817 flow [2021-11-23 12:24:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 12:24:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-23 12:24:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2205 transitions. [2021-11-23 12:24:45,870 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7830255681818182 [2021-11-23 12:24:45,870 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2205 transitions. [2021-11-23 12:24:45,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2205 transitions. [2021-11-23 12:24:45,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:45,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2205 transitions. [2021-11-23 12:24:45,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.8125) internal successors, (2205), 16 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,885 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,885 INFO L186 Difference]: Start difference. First operand has 241 places, 208 transitions, 1049 flow. Second operand 16 states and 2205 transitions. [2021-11-23 12:24:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 257 transitions, 1817 flow [2021-11-23 12:24:45,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 257 transitions, 1622 flow, removed 95 selfloop flow, removed 6 redundant places. [2021-11-23 12:24:45,920 INFO L242 Difference]: Finished difference. Result has 253 places, 218 transitions, 1159 flow [2021-11-23 12:24:45,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1159, PETRI_PLACES=253, PETRI_TRANSITIONS=218} [2021-11-23 12:24:45,922 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2021-11-23 12:24:45,922 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 218 transitions, 1159 flow [2021-11-23 12:24:45,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:45,923 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:45,923 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:45,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:24:45,924 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:45,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2134941247, now seen corresponding path program 4 times [2021-11-23 12:24:45,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:45,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467327027] [2021-11-23 12:24:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:45,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:46,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:46,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467327027] [2021-11-23 12:24:46,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467327027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:46,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:46,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:46,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625891979] [2021-11-23 12:24:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:46,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:46,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:46,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:46,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:46,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:46,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 218 transitions, 1159 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:46,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:46,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:46,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:46,719 INFO L129 PetriNetUnfolder]: 186/921 cut-off events. [2021-11-23 12:24:46,719 INFO L130 PetriNetUnfolder]: For 3368/3389 co-relation queries the response was YES. [2021-11-23 12:24:46,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 921 events. 186/921 cut-off events. For 3368/3389 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5471 event pairs, 80 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 3258. Up to 294 conditions per place. [2021-11-23 12:24:46,739 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 86 selfloop transitions, 24 changer transitions 21/266 dead transitions. [2021-11-23 12:24:46,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 266 transitions, 1958 flow [2021-11-23 12:24:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:24:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 12:24:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2344 transitions. [2021-11-23 12:24:46,747 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7834224598930482 [2021-11-23 12:24:46,747 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2344 transitions. [2021-11-23 12:24:46,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2344 transitions. [2021-11-23 12:24:46,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:46,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2344 transitions. [2021-11-23 12:24:46,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.88235294117646) internal successors, (2344), 17 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:46,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:46,764 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:46,765 INFO L186 Difference]: Start difference. First operand has 253 places, 218 transitions, 1159 flow. Second operand 17 states and 2344 transitions. [2021-11-23 12:24:46,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 266 transitions, 1958 flow [2021-11-23 12:24:46,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 266 transitions, 1817 flow, removed 49 selfloop flow, removed 8 redundant places. [2021-11-23 12:24:46,806 INFO L242 Difference]: Finished difference. Result has 266 places, 231 transitions, 1333 flow [2021-11-23 12:24:46,807 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1333, PETRI_PLACES=266, PETRI_TRANSITIONS=231} [2021-11-23 12:24:46,807 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 107 predicate places. [2021-11-23 12:24:46,808 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 231 transitions, 1333 flow [2021-11-23 12:24:46,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:46,809 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:46,809 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:46,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:24:46,810 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash -845261417, now seen corresponding path program 5 times [2021-11-23 12:24:46,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:46,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212974811] [2021-11-23 12:24:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:46,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:47,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:47,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212974811] [2021-11-23 12:24:47,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212974811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:47,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:47,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:47,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783724724] [2021-11-23 12:24:47,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:47,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:47,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:47,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:47,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:47,021 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:47,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 231 transitions, 1333 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:47,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:47,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:47,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:47,726 INFO L129 PetriNetUnfolder]: 185/923 cut-off events. [2021-11-23 12:24:47,726 INFO L130 PetriNetUnfolder]: For 4086/4110 co-relation queries the response was YES. [2021-11-23 12:24:47,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 923 events. 185/923 cut-off events. For 4086/4110 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5529 event pairs, 71 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 3411. Up to 247 conditions per place. [2021-11-23 12:24:47,748 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 110 selfloop transitions, 27 changer transitions 35/307 dead transitions. [2021-11-23 12:24:47,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 307 transitions, 2431 flow [2021-11-23 12:24:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 12:24:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-23 12:24:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3299 transitions. [2021-11-23 12:24:47,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7810132575757576 [2021-11-23 12:24:47,760 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3299 transitions. [2021-11-23 12:24:47,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3299 transitions. [2021-11-23 12:24:47,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:47,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3299 transitions. [2021-11-23 12:24:47,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 137.45833333333334) internal successors, (3299), 24 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:47,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:47,789 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 176.0) internal successors, (4400), 25 states have internal predecessors, (4400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:47,789 INFO L186 Difference]: Start difference. First operand has 266 places, 231 transitions, 1333 flow. Second operand 24 states and 3299 transitions. [2021-11-23 12:24:47,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 307 transitions, 2431 flow [2021-11-23 12:24:47,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 307 transitions, 2298 flow, removed 64 selfloop flow, removed 7 redundant places. [2021-11-23 12:24:47,842 INFO L242 Difference]: Finished difference. Result has 293 places, 233 transitions, 1401 flow [2021-11-23 12:24:47,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1401, PETRI_PLACES=293, PETRI_TRANSITIONS=233} [2021-11-23 12:24:47,844 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 134 predicate places. [2021-11-23 12:24:47,845 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 233 transitions, 1401 flow [2021-11-23 12:24:47,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:47,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:47,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:47,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:24:47,846 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1901576121, now seen corresponding path program 6 times [2021-11-23 12:24:47,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:47,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457296074] [2021-11-23 12:24:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:47,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:48,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:48,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457296074] [2021-11-23 12:24:48,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457296074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:48,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:48,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:48,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785147747] [2021-11-23 12:24:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:48,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:48,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:48,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:48,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:48,040 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:48,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 233 transitions, 1401 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:48,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:48,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:48,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:48,698 INFO L129 PetriNetUnfolder]: 192/966 cut-off events. [2021-11-23 12:24:48,699 INFO L130 PetriNetUnfolder]: For 5157/5179 co-relation queries the response was YES. [2021-11-23 12:24:48,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 966 events. 192/966 cut-off events. For 5157/5179 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5969 event pairs, 75 based on Foata normal form. 6/938 useless extension candidates. Maximal degree in co-relation 3753. Up to 297 conditions per place. [2021-11-23 12:24:48,723 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 94 selfloop transitions, 26 changer transitions 29/284 dead transitions. [2021-11-23 12:24:48,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 284 transitions, 2264 flow [2021-11-23 12:24:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:24:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-23 12:24:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3016 transitions. [2021-11-23 12:24:48,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7789256198347108 [2021-11-23 12:24:48,731 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3016 transitions. [2021-11-23 12:24:48,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3016 transitions. [2021-11-23 12:24:48,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:48,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3016 transitions. [2021-11-23 12:24:48,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.0909090909091) internal successors, (3016), 22 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:48,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:48,752 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:48,752 INFO L186 Difference]: Start difference. First operand has 293 places, 233 transitions, 1401 flow. Second operand 22 states and 3016 transitions. [2021-11-23 12:24:48,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 284 transitions, 2264 flow [2021-11-23 12:24:48,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 284 transitions, 2175 flow, removed 37 selfloop flow, removed 17 redundant places. [2021-11-23 12:24:48,811 INFO L242 Difference]: Finished difference. Result has 295 places, 237 transitions, 1502 flow [2021-11-23 12:24:48,812 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1502, PETRI_PLACES=295, PETRI_TRANSITIONS=237} [2021-11-23 12:24:48,813 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 136 predicate places. [2021-11-23 12:24:48,813 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 237 transitions, 1502 flow [2021-11-23 12:24:48,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:48,814 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:48,815 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:48,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:24:48,815 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2046587005, now seen corresponding path program 7 times [2021-11-23 12:24:48,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:48,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546419378] [2021-11-23 12:24:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:48,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:49,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:49,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546419378] [2021-11-23 12:24:49,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546419378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:49,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:49,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:49,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324692429] [2021-11-23 12:24:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:49,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:49,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:49,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:49,032 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:49,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 237 transitions, 1502 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:49,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:49,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:49,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:49,702 INFO L129 PetriNetUnfolder]: 192/992 cut-off events. [2021-11-23 12:24:49,702 INFO L130 PetriNetUnfolder]: For 5311/5336 co-relation queries the response was YES. [2021-11-23 12:24:49,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 992 events. 192/992 cut-off events. For 5311/5336 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6256 event pairs, 84 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 3861. Up to 301 conditions per place. [2021-11-23 12:24:49,726 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 98 selfloop transitions, 27 changer transitions 28/288 dead transitions. [2021-11-23 12:24:49,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 288 transitions, 2522 flow [2021-11-23 12:24:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:24:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-23 12:24:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2888 transitions. [2021-11-23 12:24:49,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7813852813852814 [2021-11-23 12:24:49,735 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2888 transitions. [2021-11-23 12:24:49,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2888 transitions. [2021-11-23 12:24:49,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:49,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2888 transitions. [2021-11-23 12:24:49,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.52380952380952) internal successors, (2888), 21 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:49,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:49,755 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:49,755 INFO L186 Difference]: Start difference. First operand has 295 places, 237 transitions, 1502 flow. Second operand 21 states and 2888 transitions. [2021-11-23 12:24:49,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 288 transitions, 2522 flow [2021-11-23 12:24:49,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 288 transitions, 2385 flow, removed 54 selfloop flow, removed 13 redundant places. [2021-11-23 12:24:49,816 INFO L242 Difference]: Finished difference. Result has 304 places, 245 transitions, 1707 flow [2021-11-23 12:24:49,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1707, PETRI_PLACES=304, PETRI_TRANSITIONS=245} [2021-11-23 12:24:49,819 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 145 predicate places. [2021-11-23 12:24:49,819 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 245 transitions, 1707 flow [2021-11-23 12:24:49,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:49,820 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:49,820 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:49,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:24:49,822 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash 827566539, now seen corresponding path program 8 times [2021-11-23 12:24:49,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:49,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282716706] [2021-11-23 12:24:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:49,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:50,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:50,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282716706] [2021-11-23 12:24:50,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282716706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:50,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:50,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:50,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983443620] [2021-11-23 12:24:50,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:50,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:50,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:50,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:50,040 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:50,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 245 transitions, 1707 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:50,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:50,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:50,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:50,695 INFO L129 PetriNetUnfolder]: 189/1013 cut-off events. [2021-11-23 12:24:50,695 INFO L130 PetriNetUnfolder]: For 6311/6336 co-relation queries the response was YES. [2021-11-23 12:24:50,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 1013 events. 189/1013 cut-off events. For 6311/6336 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6568 event pairs, 88 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 4043. Up to 318 conditions per place. [2021-11-23 12:24:50,720 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 91 selfloop transitions, 31 changer transitions 30/287 dead transitions. [2021-11-23 12:24:50,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 287 transitions, 2659 flow [2021-11-23 12:24:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:24:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-23 12:24:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2748 transitions. [2021-11-23 12:24:50,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7806818181818181 [2021-11-23 12:24:50,731 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2748 transitions. [2021-11-23 12:24:50,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2748 transitions. [2021-11-23 12:24:50,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:50,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2748 transitions. [2021-11-23 12:24:50,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.4) internal successors, (2748), 20 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:50,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:50,750 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:50,752 INFO L186 Difference]: Start difference. First operand has 304 places, 245 transitions, 1707 flow. Second operand 20 states and 2748 transitions. [2021-11-23 12:24:50,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 287 transitions, 2659 flow [2021-11-23 12:24:50,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 287 transitions, 2489 flow, removed 69 selfloop flow, removed 13 redundant places. [2021-11-23 12:24:50,828 INFO L242 Difference]: Finished difference. Result has 310 places, 249 transitions, 1795 flow [2021-11-23 12:24:50,829 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1795, PETRI_PLACES=310, PETRI_TRANSITIONS=249} [2021-11-23 12:24:50,830 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 151 predicate places. [2021-11-23 12:24:50,833 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 249 transitions, 1795 flow [2021-11-23 12:24:50,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:50,834 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:50,834 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:50,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:24:50,835 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:50,835 INFO L85 PathProgramCache]: Analyzing trace with hash 708724587, now seen corresponding path program 9 times [2021-11-23 12:24:50,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:50,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592810653] [2021-11-23 12:24:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:50,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:51,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:51,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592810653] [2021-11-23 12:24:51,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592810653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:51,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:51,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:51,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525379379] [2021-11-23 12:24:51,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:51,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:51,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:51,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:51,039 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:51,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 249 transitions, 1795 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:51,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:51,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:51,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:51,666 INFO L129 PetriNetUnfolder]: 174/950 cut-off events. [2021-11-23 12:24:51,666 INFO L130 PetriNetUnfolder]: For 5200/5229 co-relation queries the response was YES. [2021-11-23 12:24:51,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3820 conditions, 950 events. 174/950 cut-off events. For 5200/5229 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5975 event pairs, 71 based on Foata normal form. 10/927 useless extension candidates. Maximal degree in co-relation 3679. Up to 304 conditions per place. [2021-11-23 12:24:51,690 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 92 selfloop transitions, 19 changer transitions 30/276 dead transitions. [2021-11-23 12:24:51,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 276 transitions, 2382 flow [2021-11-23 12:24:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:24:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:24:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2021-11-23 12:24:51,698 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790404040404041 [2021-11-23 12:24:51,698 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2468 transitions. [2021-11-23 12:24:51,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2468 transitions. [2021-11-23 12:24:51,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:51,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2468 transitions. [2021-11-23 12:24:51,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.11111111111111) internal successors, (2468), 18 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:51,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:51,717 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:51,717 INFO L186 Difference]: Start difference. First operand has 310 places, 249 transitions, 1795 flow. Second operand 18 states and 2468 transitions. [2021-11-23 12:24:51,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 276 transitions, 2382 flow [2021-11-23 12:24:51,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 276 transitions, 2273 flow, removed 23 selfloop flow, removed 14 redundant places. [2021-11-23 12:24:51,784 INFO L242 Difference]: Finished difference. Result has 308 places, 234 transitions, 1537 flow [2021-11-23 12:24:51,785 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1537, PETRI_PLACES=308, PETRI_TRANSITIONS=234} [2021-11-23 12:24:51,785 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 149 predicate places. [2021-11-23 12:24:51,785 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 234 transitions, 1537 flow [2021-11-23 12:24:51,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:51,786 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:51,787 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:51,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:24:51,787 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:51,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1863994139, now seen corresponding path program 10 times [2021-11-23 12:24:51,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:51,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692799797] [2021-11-23 12:24:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:51,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:51,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:51,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692799797] [2021-11-23 12:24:51,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692799797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:51,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:51,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:51,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865641244] [2021-11-23 12:24:51,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:51,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:51,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:51,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:51,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:51,983 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:51,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 234 transitions, 1537 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:51,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:51,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:51,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:52,577 INFO L129 PetriNetUnfolder]: 167/927 cut-off events. [2021-11-23 12:24:52,577 INFO L130 PetriNetUnfolder]: For 4855/4879 co-relation queries the response was YES. [2021-11-23 12:24:52,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 927 events. 167/927 cut-off events. For 4855/4879 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5744 event pairs, 83 based on Foata normal form. 3/897 useless extension candidates. Maximal degree in co-relation 3579. Up to 300 conditions per place. [2021-11-23 12:24:52,607 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 16 changer transitions 25/256 dead transitions. [2021-11-23 12:24:52,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 256 transitions, 2066 flow [2021-11-23 12:24:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:24:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:24:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2021-11-23 12:24:52,614 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2021-11-23 12:24:52,614 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2021-11-23 12:24:52,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2021-11-23 12:24:52,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:52,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2021-11-23 12:24:52,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:52,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:52,667 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:52,667 INFO L186 Difference]: Start difference. First operand has 308 places, 234 transitions, 1537 flow. Second operand 18 states and 2471 transitions. [2021-11-23 12:24:52,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 256 transitions, 2066 flow [2021-11-23 12:24:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 256 transitions, 1937 flow, removed 23 selfloop flow, removed 18 redundant places. [2021-11-23 12:24:52,728 INFO L242 Difference]: Finished difference. Result has 292 places, 226 transitions, 1379 flow [2021-11-23 12:24:52,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1379, PETRI_PLACES=292, PETRI_TRANSITIONS=226} [2021-11-23 12:24:52,731 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2021-11-23 12:24:52,731 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 226 transitions, 1379 flow [2021-11-23 12:24:52,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:52,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:52,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:52,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:24:52,733 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:52,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash 550195643, now seen corresponding path program 11 times [2021-11-23 12:24:52,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:52,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961725393] [2021-11-23 12:24:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:52,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:52,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961725393] [2021-11-23 12:24:52,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961725393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:52,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:52,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:52,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171154741] [2021-11-23 12:24:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:52,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:52,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:52,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:52,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 226 transitions, 1379 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:52,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:52,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:52,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:53,447 INFO L129 PetriNetUnfolder]: 163/916 cut-off events. [2021-11-23 12:24:53,447 INFO L130 PetriNetUnfolder]: For 4100/4122 co-relation queries the response was YES. [2021-11-23 12:24:53,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 916 events. 163/916 cut-off events. For 4100/4122 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5615 event pairs, 86 based on Foata normal form. 3/885 useless extension candidates. Maximal degree in co-relation 3452. Up to 300 conditions per place. [2021-11-23 12:24:53,466 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 21 changer transitions 26/257 dead transitions. [2021-11-23 12:24:53,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 257 transitions, 2082 flow [2021-11-23 12:24:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:24:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 12:24:53,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2021-11-23 12:24:53,472 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2021-11-23 12:24:53,472 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2021-11-23 12:24:53,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2021-11-23 12:24:53,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:53,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2021-11-23 12:24:53,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.58823529411765) internal successors, (2339), 17 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:53,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:53,488 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:53,488 INFO L186 Difference]: Start difference. First operand has 292 places, 226 transitions, 1379 flow. Second operand 17 states and 2339 transitions. [2021-11-23 12:24:53,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 257 transitions, 2082 flow [2021-11-23 12:24:53,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 257 transitions, 1937 flow, removed 38 selfloop flow, removed 16 redundant places. [2021-11-23 12:24:53,538 INFO L242 Difference]: Finished difference. Result has 283 places, 228 transitions, 1416 flow [2021-11-23 12:24:53,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1416, PETRI_PLACES=283, PETRI_TRANSITIONS=228} [2021-11-23 12:24:53,540 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2021-11-23 12:24:53,540 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 228 transitions, 1416 flow [2021-11-23 12:24:53,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:53,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:53,541 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:53,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 12:24:53,542 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:53,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1720697771, now seen corresponding path program 12 times [2021-11-23 12:24:53,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:53,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137040087] [2021-11-23 12:24:53,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:53,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:53,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:53,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137040087] [2021-11-23 12:24:53,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137040087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:53,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:53,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:53,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110968118] [2021-11-23 12:24:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:53,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:53,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:53,713 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:53,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 228 transitions, 1416 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:53,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:53,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:53,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:54,256 INFO L129 PetriNetUnfolder]: 150/860 cut-off events. [2021-11-23 12:24:54,256 INFO L130 PetriNetUnfolder]: For 3311/3333 co-relation queries the response was YES. [2021-11-23 12:24:54,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3149 conditions, 860 events. 150/860 cut-off events. For 3311/3333 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5094 event pairs, 81 based on Foata normal form. 3/831 useless extension candidates. Maximal degree in co-relation 3078. Up to 287 conditions per place. [2021-11-23 12:24:54,272 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 70 selfloop transitions, 5 changer transitions 31/241 dead transitions. [2021-11-23 12:24:54,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 241 transitions, 1717 flow [2021-11-23 12:24:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:24:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:24:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2021-11-23 12:24:54,286 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-11-23 12:24:54,286 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2464 transitions. [2021-11-23 12:24:54,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2464 transitions. [2021-11-23 12:24:54,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:54,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2464 transitions. [2021-11-23 12:24:54,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.88888888888889) internal successors, (2464), 18 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:54,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:54,309 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:54,309 INFO L186 Difference]: Start difference. First operand has 283 places, 228 transitions, 1416 flow. Second operand 18 states and 2464 transitions. [2021-11-23 12:24:54,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 241 transitions, 1717 flow [2021-11-23 12:24:54,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 241 transitions, 1619 flow, removed 30 selfloop flow, removed 11 redundant places. [2021-11-23 12:24:54,355 INFO L242 Difference]: Finished difference. Result has 286 places, 208 transitions, 1081 flow [2021-11-23 12:24:54,355 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1081, PETRI_PLACES=286, PETRI_TRANSITIONS=208} [2021-11-23 12:24:54,356 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2021-11-23 12:24:54,356 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 208 transitions, 1081 flow [2021-11-23 12:24:54,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:54,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:54,358 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:54,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 12:24:54,358 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:54,359 INFO L85 PathProgramCache]: Analyzing trace with hash -832009745, now seen corresponding path program 13 times [2021-11-23 12:24:54,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:54,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463817767] [2021-11-23 12:24:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:54,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:54,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:54,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463817767] [2021-11-23 12:24:54,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463817767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:54,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:54,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:54,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994968210] [2021-11-23 12:24:54,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:54,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:54,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:54,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:54,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 208 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:54,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:54,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:54,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:54,984 INFO L129 PetriNetUnfolder]: 143/819 cut-off events. [2021-11-23 12:24:54,985 INFO L130 PetriNetUnfolder]: For 3088/3110 co-relation queries the response was YES. [2021-11-23 12:24:54,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 819 events. 143/819 cut-off events. For 3088/3110 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4745 event pairs, 65 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 2853. Up to 261 conditions per place. [2021-11-23 12:24:55,000 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 72 selfloop transitions, 21 changer transitions 22/250 dead transitions. [2021-11-23 12:24:55,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 250 transitions, 1818 flow [2021-11-23 12:24:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 12:24:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-23 12:24:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2206 transitions. [2021-11-23 12:24:55,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7833806818181818 [2021-11-23 12:24:55,007 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2206 transitions. [2021-11-23 12:24:55,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2206 transitions. [2021-11-23 12:24:55,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:55,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2206 transitions. [2021-11-23 12:24:55,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.875) internal successors, (2206), 16 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,022 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,023 INFO L186 Difference]: Start difference. First operand has 286 places, 208 transitions, 1081 flow. Second operand 16 states and 2206 transitions. [2021-11-23 12:24:55,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 250 transitions, 1818 flow [2021-11-23 12:24:55,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 250 transitions, 1601 flow, removed 61 selfloop flow, removed 22 redundant places. [2021-11-23 12:24:55,059 INFO L242 Difference]: Finished difference. Result has 261 places, 217 transitions, 1187 flow [2021-11-23 12:24:55,059 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1187, PETRI_PLACES=261, PETRI_TRANSITIONS=217} [2021-11-23 12:24:55,060 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 102 predicate places. [2021-11-23 12:24:55,060 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 217 transitions, 1187 flow [2021-11-23 12:24:55,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,061 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:55,062 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:55,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 12:24:55,062 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:55,063 INFO L85 PathProgramCache]: Analyzing trace with hash -358241663, now seen corresponding path program 14 times [2021-11-23 12:24:55,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:55,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387603535] [2021-11-23 12:24:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:55,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:55,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:55,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387603535] [2021-11-23 12:24:55,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387603535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:55,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:55,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:55,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756123254] [2021-11-23 12:24:55,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:55,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:55,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:55,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:55,230 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:55,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 217 transitions, 1187 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:55,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:55,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:55,756 INFO L129 PetriNetUnfolder]: 142/826 cut-off events. [2021-11-23 12:24:55,756 INFO L130 PetriNetUnfolder]: For 2703/2718 co-relation queries the response was YES. [2021-11-23 12:24:55,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 826 events. 142/826 cut-off events. For 2703/2718 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4800 event pairs, 63 based on Foata normal form. 1/797 useless extension candidates. Maximal degree in co-relation 2824. Up to 261 conditions per place. [2021-11-23 12:24:55,770 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 76 selfloop transitions, 23 changer transitions 28/262 dead transitions. [2021-11-23 12:24:55,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 262 transitions, 1945 flow [2021-11-23 12:24:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:24:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-23 12:24:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2745 transitions. [2021-11-23 12:24:55,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7798295454545454 [2021-11-23 12:24:55,781 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2745 transitions. [2021-11-23 12:24:55,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2745 transitions. [2021-11-23 12:24:55,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:55,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2745 transitions. [2021-11-23 12:24:55,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.25) internal successors, (2745), 20 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,799 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,800 INFO L186 Difference]: Start difference. First operand has 261 places, 217 transitions, 1187 flow. Second operand 20 states and 2745 transitions. [2021-11-23 12:24:55,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 262 transitions, 1945 flow [2021-11-23 12:24:55,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 262 transitions, 1799 flow, removed 50 selfloop flow, removed 8 redundant places. [2021-11-23 12:24:55,833 INFO L242 Difference]: Finished difference. Result has 280 places, 224 transitions, 1292 flow [2021-11-23 12:24:55,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1292, PETRI_PLACES=280, PETRI_TRANSITIONS=224} [2021-11-23 12:24:55,835 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2021-11-23 12:24:55,835 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 224 transitions, 1292 flow [2021-11-23 12:24:55,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:55,836 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:55,836 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:55,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 12:24:55,837 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash 149169609, now seen corresponding path program 15 times [2021-11-23 12:24:55,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:55,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123617687] [2021-11-23 12:24:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:55,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:55,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:55,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123617687] [2021-11-23 12:24:55,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123617687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:55,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:55,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:55,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608077894] [2021-11-23 12:24:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:55,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:55,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:55,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:56,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:56,002 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 224 transitions, 1292 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:56,002 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:56,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:56,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:56,589 INFO L129 PetriNetUnfolder]: 144/864 cut-off events. [2021-11-23 12:24:56,590 INFO L130 PetriNetUnfolder]: For 3273/3288 co-relation queries the response was YES. [2021-11-23 12:24:56,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 864 events. 144/864 cut-off events. For 3273/3288 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5192 event pairs, 66 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 3006. Up to 264 conditions per place. [2021-11-23 12:24:56,600 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 75 selfloop transitions, 27 changer transitions 30/267 dead transitions. [2021-11-23 12:24:56,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 267 transitions, 2061 flow [2021-11-23 12:24:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:24:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-23 12:24:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3012 transitions. [2021-11-23 12:24:56,608 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7778925619834711 [2021-11-23 12:24:56,608 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3012 transitions. [2021-11-23 12:24:56,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3012 transitions. [2021-11-23 12:24:56,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:56,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3012 transitions. [2021-11-23 12:24:56,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 136.9090909090909) internal successors, (3012), 22 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:56,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:56,626 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:56,626 INFO L186 Difference]: Start difference. First operand has 280 places, 224 transitions, 1292 flow. Second operand 22 states and 3012 transitions. [2021-11-23 12:24:56,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 267 transitions, 2061 flow [2021-11-23 12:24:56,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 267 transitions, 1974 flow, removed 36 selfloop flow, removed 11 redundant places. [2021-11-23 12:24:56,666 INFO L242 Difference]: Finished difference. Result has 293 places, 229 transitions, 1409 flow [2021-11-23 12:24:56,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1409, PETRI_PLACES=293, PETRI_TRANSITIONS=229} [2021-11-23 12:24:56,668 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 134 predicate places. [2021-11-23 12:24:56,668 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 229 transitions, 1409 flow [2021-11-23 12:24:56,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:56,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:56,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:56,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 12:24:56,670 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1681730419, now seen corresponding path program 16 times [2021-11-23 12:24:56,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:56,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349360495] [2021-11-23 12:24:56,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:56,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:56,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:56,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349360495] [2021-11-23 12:24:56,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349360495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:56,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:56,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:56,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102301320] [2021-11-23 12:24:56,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:56,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:56,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:56,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:56,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:56,833 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:56,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 229 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:56,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:56,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:56,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:57,310 INFO L129 PetriNetUnfolder]: 130/808 cut-off events. [2021-11-23 12:24:57,310 INFO L130 PetriNetUnfolder]: For 2784/2799 co-relation queries the response was YES. [2021-11-23 12:24:57,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2836 conditions, 808 events. 130/808 cut-off events. For 2784/2799 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4679 event pairs, 63 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 2761. Up to 261 conditions per place. [2021-11-23 12:24:57,320 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 15 changer transitions 29/247 dead transitions. [2021-11-23 12:24:57,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 247 transitions, 1818 flow [2021-11-23 12:24:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:24:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:24:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2466 transitions. [2021-11-23 12:24:57,326 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7784090909090909 [2021-11-23 12:24:57,326 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2466 transitions. [2021-11-23 12:24:57,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2466 transitions. [2021-11-23 12:24:57,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:57,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2466 transitions. [2021-11-23 12:24:57,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.0) internal successors, (2466), 18 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:57,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:57,339 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:57,339 INFO L186 Difference]: Start difference. First operand has 293 places, 229 transitions, 1409 flow. Second operand 18 states and 2466 transitions. [2021-11-23 12:24:57,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 247 transitions, 1818 flow [2021-11-23 12:24:57,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 247 transitions, 1752 flow, removed 23 selfloop flow, removed 13 redundant places. [2021-11-23 12:24:57,378 INFO L242 Difference]: Finished difference. Result has 290 places, 214 transitions, 1200 flow [2021-11-23 12:24:57,378 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1200, PETRI_PLACES=290, PETRI_TRANSITIONS=214} [2021-11-23 12:24:57,379 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2021-11-23 12:24:57,379 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 214 transitions, 1200 flow [2021-11-23 12:24:57,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:57,380 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:57,380 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:57,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 12:24:57,381 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 210621271, now seen corresponding path program 17 times [2021-11-23 12:24:57,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:57,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103503568] [2021-11-23 12:24:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:57,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:57,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:57,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103503568] [2021-11-23 12:24:57,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103503568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:57,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:57,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:57,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424684165] [2021-11-23 12:24:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:57,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:57,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:57,534 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:57,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 214 transitions, 1200 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:57,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:57,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:57,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:58,052 INFO L129 PetriNetUnfolder]: 130/808 cut-off events. [2021-11-23 12:24:58,052 INFO L130 PetriNetUnfolder]: For 2867/2882 co-relation queries the response was YES. [2021-11-23 12:24:58,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 808 events. 130/808 cut-off events. For 2867/2882 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4725 event pairs, 62 based on Foata normal form. 1/778 useless extension candidates. Maximal degree in co-relation 2780. Up to 263 conditions per place. [2021-11-23 12:24:58,068 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 23 changer transitions 24/250 dead transitions. [2021-11-23 12:24:58,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 250 transitions, 1916 flow [2021-11-23 12:24:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:24:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 12:24:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2337 transitions. [2021-11-23 12:24:58,075 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7810828877005348 [2021-11-23 12:24:58,075 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2337 transitions. [2021-11-23 12:24:58,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2337 transitions. [2021-11-23 12:24:58,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:58,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2337 transitions. [2021-11-23 12:24:58,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.47058823529412) internal successors, (2337), 17 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,093 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,093 INFO L186 Difference]: Start difference. First operand has 290 places, 214 transitions, 1200 flow. Second operand 17 states and 2337 transitions. [2021-11-23 12:24:58,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 250 transitions, 1916 flow [2021-11-23 12:24:58,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 250 transitions, 1715 flow, removed 48 selfloop flow, removed 20 redundant places. [2021-11-23 12:24:58,134 INFO L242 Difference]: Finished difference. Result has 273 places, 222 transitions, 1305 flow [2021-11-23 12:24:58,135 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1305, PETRI_PLACES=273, PETRI_TRANSITIONS=222} [2021-11-23 12:24:58,136 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2021-11-23 12:24:58,136 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 222 transitions, 1305 flow [2021-11-23 12:24:58,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,137 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:58,138 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:58,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 12:24:58,138 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 911567205, now seen corresponding path program 18 times [2021-11-23 12:24:58,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:58,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793390122] [2021-11-23 12:24:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:58,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:58,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:58,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793390122] [2021-11-23 12:24:58,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793390122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:58,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:58,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:58,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244795112] [2021-11-23 12:24:58,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:58,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:58,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:58,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:58,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:58,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:58,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 222 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:58,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:58,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:58,815 INFO L129 PetriNetUnfolder]: 120/777 cut-off events. [2021-11-23 12:24:58,816 INFO L130 PetriNetUnfolder]: For 2180/2195 co-relation queries the response was YES. [2021-11-23 12:24:58,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 777 events. 120/777 cut-off events. For 2180/2195 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4445 event pairs, 63 based on Foata normal form. 1/749 useless extension candidates. Maximal degree in co-relation 2532. Up to 261 conditions per place. [2021-11-23 12:24:58,829 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 65 selfloop transitions, 14 changer transitions 28/242 dead transitions. [2021-11-23 12:24:58,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 242 transitions, 1679 flow [2021-11-23 12:24:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:24:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:24:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2468 transitions. [2021-11-23 12:24:58,834 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790404040404041 [2021-11-23 12:24:58,835 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2468 transitions. [2021-11-23 12:24:58,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2468 transitions. [2021-11-23 12:24:58,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:58,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2468 transitions. [2021-11-23 12:24:58,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.11111111111111) internal successors, (2468), 18 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,846 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,846 INFO L186 Difference]: Start difference. First operand has 273 places, 222 transitions, 1305 flow. Second operand 18 states and 2468 transitions. [2021-11-23 12:24:58,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 242 transitions, 1679 flow [2021-11-23 12:24:58,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 242 transitions, 1574 flow, removed 33 selfloop flow, removed 9 redundant places. [2021-11-23 12:24:58,880 INFO L242 Difference]: Finished difference. Result has 278 places, 211 transitions, 1117 flow [2021-11-23 12:24:58,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1117, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2021-11-23 12:24:58,882 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 119 predicate places. [2021-11-23 12:24:58,882 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 1117 flow [2021-11-23 12:24:58,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,883 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:58,883 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:58,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 12:24:58,884 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 702945429, now seen corresponding path program 19 times [2021-11-23 12:24:58,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:58,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258386961] [2021-11-23 12:24:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:58,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:59,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:59,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258386961] [2021-11-23 12:24:59,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258386961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:59,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:59,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:59,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109756840] [2021-11-23 12:24:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:59,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:59,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:59,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:59,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:59,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:59,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:59,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:59,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:59,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:24:59,571 INFO L129 PetriNetUnfolder]: 117/763 cut-off events. [2021-11-23 12:24:59,572 INFO L130 PetriNetUnfolder]: For 1995/2010 co-relation queries the response was YES. [2021-11-23 12:24:59,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 763 events. 117/763 cut-off events. For 1995/2010 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4287 event pairs, 63 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 2432. Up to 253 conditions per place. [2021-11-23 12:24:59,580 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 59 selfloop transitions, 15 changer transitions 29/238 dead transitions. [2021-11-23 12:24:59,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 238 transitions, 1608 flow [2021-11-23 12:24:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:24:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-23 12:24:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2870 transitions. [2021-11-23 12:24:59,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7765151515151515 [2021-11-23 12:24:59,598 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2870 transitions. [2021-11-23 12:24:59,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2870 transitions. [2021-11-23 12:24:59,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:24:59,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2870 transitions. [2021-11-23 12:24:59,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.66666666666666) internal successors, (2870), 21 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:59,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:59,611 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:59,611 INFO L186 Difference]: Start difference. First operand has 278 places, 211 transitions, 1117 flow. Second operand 21 states and 2870 transitions. [2021-11-23 12:24:59,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 238 transitions, 1608 flow [2021-11-23 12:24:59,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 238 transitions, 1480 flow, removed 26 selfloop flow, removed 15 redundant places. [2021-11-23 12:24:59,640 INFO L242 Difference]: Finished difference. Result has 277 places, 208 transitions, 1063 flow [2021-11-23 12:24:59,641 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1063, PETRI_PLACES=277, PETRI_TRANSITIONS=208} [2021-11-23 12:24:59,642 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 118 predicate places. [2021-11-23 12:24:59,642 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 208 transitions, 1063 flow [2021-11-23 12:24:59,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:59,643 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:24:59,643 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:59,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 12:24:59,643 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:24:59,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2089303793, now seen corresponding path program 20 times [2021-11-23 12:24:59,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:59,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812239468] [2021-11-23 12:24:59,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:59,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:59,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:59,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812239468] [2021-11-23 12:24:59,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812239468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:59,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:59,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:24:59,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175451360] [2021-11-23 12:24:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:59,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:24:59,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:59,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:24:59,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:24:59,809 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:24:59,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 208 transitions, 1063 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:59,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:24:59,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:24:59,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:00,239 INFO L129 PetriNetUnfolder]: 103/675 cut-off events. [2021-11-23 12:25:00,239 INFO L130 PetriNetUnfolder]: For 1581/1596 co-relation queries the response was YES. [2021-11-23 12:25:00,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 675 events. 103/675 cut-off events. For 1581/1596 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3601 event pairs, 60 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 2086. Up to 234 conditions per place. [2021-11-23 12:25:00,250 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 47 selfloop transitions, 0 changer transitions 39/215 dead transitions. [2021-11-23 12:25:00,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 215 transitions, 1254 flow [2021-11-23 12:25:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:25:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:25:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2456 transitions. [2021-11-23 12:25:00,255 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7752525252525253 [2021-11-23 12:25:00,255 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2456 transitions. [2021-11-23 12:25:00,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2456 transitions. [2021-11-23 12:25:00,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:00,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2456 transitions. [2021-11-23 12:25:00,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.44444444444446) internal successors, (2456), 18 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:00,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:00,267 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:00,267 INFO L186 Difference]: Start difference. First operand has 277 places, 208 transitions, 1063 flow. Second operand 18 states and 2456 transitions. [2021-11-23 12:25:00,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 215 transitions, 1254 flow [2021-11-23 12:25:00,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 215 transitions, 1194 flow, removed 14 selfloop flow, removed 17 redundant places. [2021-11-23 12:25:00,294 INFO L242 Difference]: Finished difference. Result has 267 places, 176 transitions, 712 flow [2021-11-23 12:25:00,294 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=712, PETRI_PLACES=267, PETRI_TRANSITIONS=176} [2021-11-23 12:25:00,302 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 108 predicate places. [2021-11-23 12:25:00,302 INFO L470 AbstractCegarLoop]: Abstraction has has 267 places, 176 transitions, 712 flow [2021-11-23 12:25:00,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:00,303 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:00,303 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:00,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 12:25:00,307 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:00,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1809009679, now seen corresponding path program 4 times [2021-11-23 12:25:00,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:00,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919728633] [2021-11-23 12:25:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:00,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:00,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:00,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919728633] [2021-11-23 12:25:00,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919728633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:00,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:00,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:00,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328860382] [2021-11-23 12:25:00,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:00,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:00,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:00,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:00,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 176 transitions, 712 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:00,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:00,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:00,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:01,062 INFO L129 PetriNetUnfolder]: 104/666 cut-off events. [2021-11-23 12:25:01,062 INFO L130 PetriNetUnfolder]: For 1495/1503 co-relation queries the response was YES. [2021-11-23 12:25:01,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 666 events. 104/666 cut-off events. For 1495/1503 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3583 event pairs, 49 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 1950. Up to 150 conditions per place. [2021-11-23 12:25:01,110 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 15 changer transitions 33/236 dead transitions. [2021-11-23 12:25:01,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 1385 flow [2021-11-23 12:25:01,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:25:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-23 12:25:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2755 transitions. [2021-11-23 12:25:01,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7826704545454546 [2021-11-23 12:25:01,115 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2755 transitions. [2021-11-23 12:25:01,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2755 transitions. [2021-11-23 12:25:01,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:01,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2755 transitions. [2021-11-23 12:25:01,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.75) internal successors, (2755), 20 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,127 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,127 INFO L186 Difference]: Start difference. First operand has 267 places, 176 transitions, 712 flow. Second operand 20 states and 2755 transitions. [2021-11-23 12:25:01,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 1385 flow [2021-11-23 12:25:01,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 236 transitions, 1355 flow, removed 14 selfloop flow, removed 10 redundant places. [2021-11-23 12:25:01,147 INFO L242 Difference]: Finished difference. Result has 249 places, 187 transitions, 884 flow [2021-11-23 12:25:01,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=884, PETRI_PLACES=249, PETRI_TRANSITIONS=187} [2021-11-23 12:25:01,149 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2021-11-23 12:25:01,149 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 187 transitions, 884 flow [2021-11-23 12:25:01,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,150 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:01,150 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:01,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 12:25:01,151 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash -653441541, now seen corresponding path program 5 times [2021-11-23 12:25:01,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:01,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429476002] [2021-11-23 12:25:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:01,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:01,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:01,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429476002] [2021-11-23 12:25:01,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429476002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:01,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:01,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:01,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522562981] [2021-11-23 12:25:01,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:01,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:01,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:01,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:01,295 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:01,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 187 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:01,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:01,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:01,674 INFO L129 PetriNetUnfolder]: 106/678 cut-off events. [2021-11-23 12:25:01,674 INFO L130 PetriNetUnfolder]: For 2203/2209 co-relation queries the response was YES. [2021-11-23 12:25:01,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2251 conditions, 678 events. 106/678 cut-off events. For 2203/2209 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3714 event pairs, 44 based on Foata normal form. 1/652 useless extension candidates. Maximal degree in co-relation 2185. Up to 170 conditions per place. [2021-11-23 12:25:01,683 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 68 selfloop transitions, 23 changer transitions 25/236 dead transitions. [2021-11-23 12:25:01,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 236 transitions, 1634 flow [2021-11-23 12:25:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 12:25:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-23 12:25:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2207 transitions. [2021-11-23 12:25:01,705 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7837357954545454 [2021-11-23 12:25:01,705 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2207 transitions. [2021-11-23 12:25:01,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2207 transitions. [2021-11-23 12:25:01,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:01,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2207 transitions. [2021-11-23 12:25:01,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.9375) internal successors, (2207), 16 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,715 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,716 INFO L186 Difference]: Start difference. First operand has 249 places, 187 transitions, 884 flow. Second operand 16 states and 2207 transitions. [2021-11-23 12:25:01,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 236 transitions, 1634 flow [2021-11-23 12:25:01,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 236 transitions, 1519 flow, removed 50 selfloop flow, removed 10 redundant places. [2021-11-23 12:25:01,743 INFO L242 Difference]: Finished difference. Result has 253 places, 197 transitions, 1048 flow [2021-11-23 12:25:01,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1048, PETRI_PLACES=253, PETRI_TRANSITIONS=197} [2021-11-23 12:25:01,744 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 94 predicate places. [2021-11-23 12:25:01,744 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 197 transitions, 1048 flow [2021-11-23 12:25:01,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:01,745 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:01,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 12:25:01,746 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1636751855, now seen corresponding path program 6 times [2021-11-23 12:25:01,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:01,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054309678] [2021-11-23 12:25:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:01,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:01,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:01,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054309678] [2021-11-23 12:25:01,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054309678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:01,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:01,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:01,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500498105] [2021-11-23 12:25:01,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:01,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:01,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:01,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:01,911 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:01,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 197 transitions, 1048 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:01,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:01,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:01,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:02,473 INFO L129 PetriNetUnfolder]: 116/714 cut-off events. [2021-11-23 12:25:02,474 INFO L130 PetriNetUnfolder]: For 2423/2432 co-relation queries the response was YES. [2021-11-23 12:25:02,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 714 events. 116/714 cut-off events. For 2423/2432 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4004 event pairs, 50 based on Foata normal form. 1/686 useless extension candidates. Maximal degree in co-relation 2361. Up to 169 conditions per place. [2021-11-23 12:25:02,486 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 79 selfloop transitions, 24 changer transitions 33/256 dead transitions. [2021-11-23 12:25:02,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 256 transitions, 1940 flow [2021-11-23 12:25:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:25:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-23 12:25:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2890 transitions. [2021-11-23 12:25:02,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7819264069264069 [2021-11-23 12:25:02,492 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2890 transitions. [2021-11-23 12:25:02,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2890 transitions. [2021-11-23 12:25:02,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:02,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2890 transitions. [2021-11-23 12:25:02,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.61904761904762) internal successors, (2890), 21 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:02,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:02,504 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:02,504 INFO L186 Difference]: Start difference. First operand has 253 places, 197 transitions, 1048 flow. Second operand 21 states and 2890 transitions. [2021-11-23 12:25:02,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 256 transitions, 1940 flow [2021-11-23 12:25:02,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 256 transitions, 1819 flow, removed 38 selfloop flow, removed 9 redundant places. [2021-11-23 12:25:02,537 INFO L242 Difference]: Finished difference. Result has 273 places, 207 transitions, 1218 flow [2021-11-23 12:25:02,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1218, PETRI_PLACES=273, PETRI_TRANSITIONS=207} [2021-11-23 12:25:02,538 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 114 predicate places. [2021-11-23 12:25:02,539 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 207 transitions, 1218 flow [2021-11-23 12:25:02,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:02,539 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:02,540 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:02,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 12:25:02,540 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1643865623, now seen corresponding path program 7 times [2021-11-23 12:25:02,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:02,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206667049] [2021-11-23 12:25:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:02,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:02,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:02,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206667049] [2021-11-23 12:25:02,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206667049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:02,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:02,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:02,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746582715] [2021-11-23 12:25:02,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:02,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:02,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:02,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:02,698 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:02,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 207 transitions, 1218 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:02,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:02,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:02,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:03,246 INFO L129 PetriNetUnfolder]: 111/727 cut-off events. [2021-11-23 12:25:03,246 INFO L130 PetriNetUnfolder]: For 3102/3123 co-relation queries the response was YES. [2021-11-23 12:25:03,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2573 conditions, 727 events. 111/727 cut-off events. For 3102/3123 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4188 event pairs, 49 based on Foata normal form. 4/700 useless extension candidates. Maximal degree in co-relation 2496. Up to 186 conditions per place. [2021-11-23 12:25:03,265 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 73 selfloop transitions, 30 changer transitions 33/256 dead transitions. [2021-11-23 12:25:03,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 256 transitions, 2107 flow [2021-11-23 12:25:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:25:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-23 12:25:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2750 transitions. [2021-11-23 12:25:03,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-11-23 12:25:03,272 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2750 transitions. [2021-11-23 12:25:03,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2750 transitions. [2021-11-23 12:25:03,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:03,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2750 transitions. [2021-11-23 12:25:03,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.5) internal successors, (2750), 20 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:03,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:03,290 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 176.0) internal successors, (3696), 21 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:03,291 INFO L186 Difference]: Start difference. First operand has 273 places, 207 transitions, 1218 flow. Second operand 20 states and 2750 transitions. [2021-11-23 12:25:03,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 256 transitions, 2107 flow [2021-11-23 12:25:03,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 256 transitions, 1963 flow, removed 58 selfloop flow, removed 12 redundant places. [2021-11-23 12:25:03,329 INFO L242 Difference]: Finished difference. Result has 280 places, 213 transitions, 1345 flow [2021-11-23 12:25:03,330 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1345, PETRI_PLACES=280, PETRI_TRANSITIONS=213} [2021-11-23 12:25:03,332 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 121 predicate places. [2021-11-23 12:25:03,332 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 213 transitions, 1345 flow [2021-11-23 12:25:03,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:03,333 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:03,333 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:03,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 12:25:03,333 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:03,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:03,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1308926351, now seen corresponding path program 8 times [2021-11-23 12:25:03,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:03,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402066479] [2021-11-23 12:25:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:03,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:03,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:03,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402066479] [2021-11-23 12:25:03,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402066479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:03,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:03,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:03,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279519325] [2021-11-23 12:25:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:03,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:03,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:03,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:03,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 213 transitions, 1345 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:03,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:03,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:03,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:04,084 INFO L129 PetriNetUnfolder]: 108/723 cut-off events. [2021-11-23 12:25:04,084 INFO L130 PetriNetUnfolder]: For 2896/2915 co-relation queries the response was YES. [2021-11-23 12:25:04,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 723 events. 108/723 cut-off events. For 2896/2915 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4150 event pairs, 43 based on Foata normal form. 6/702 useless extension candidates. Maximal degree in co-relation 2444. Up to 169 conditions per place. [2021-11-23 12:25:04,093 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 80 selfloop transitions, 29 changer transitions 37/266 dead transitions. [2021-11-23 12:25:04,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 266 transitions, 2220 flow [2021-11-23 12:25:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:25:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-23 12:25:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3018 transitions. [2021-11-23 12:25:04,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7794421487603306 [2021-11-23 12:25:04,099 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3018 transitions. [2021-11-23 12:25:04,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3018 transitions. [2021-11-23 12:25:04,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:04,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3018 transitions. [2021-11-23 12:25:04,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.1818181818182) internal successors, (3018), 22 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,112 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,112 INFO L186 Difference]: Start difference. First operand has 280 places, 213 transitions, 1345 flow. Second operand 22 states and 3018 transitions. [2021-11-23 12:25:04,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 266 transitions, 2220 flow [2021-11-23 12:25:04,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 2117 flow, removed 29 selfloop flow, removed 12 redundant places. [2021-11-23 12:25:04,154 INFO L242 Difference]: Finished difference. Result has 290 places, 212 transitions, 1378 flow [2021-11-23 12:25:04,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1378, PETRI_PLACES=290, PETRI_TRANSITIONS=212} [2021-11-23 12:25:04,155 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 131 predicate places. [2021-11-23 12:25:04,156 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 212 transitions, 1378 flow [2021-11-23 12:25:04,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:04,157 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:04,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 12:25:04,157 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:04,158 INFO L85 PathProgramCache]: Analyzing trace with hash 195790265, now seen corresponding path program 9 times [2021-11-23 12:25:04,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:04,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55358763] [2021-11-23 12:25:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:04,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:04,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:04,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55358763] [2021-11-23 12:25:04,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55358763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:04,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:04,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:04,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874626707] [2021-11-23 12:25:04,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:04,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:04,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:04,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:04,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:04,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:04,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 212 transitions, 1378 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:04,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:04,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:04,750 INFO L129 PetriNetUnfolder]: 89/654 cut-off events. [2021-11-23 12:25:04,751 INFO L130 PetriNetUnfolder]: For 2520/2543 co-relation queries the response was YES. [2021-11-23 12:25:04,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 654 events. 89/654 cut-off events. For 2520/2543 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3543 event pairs, 41 based on Foata normal form. 9/638 useless extension candidates. Maximal degree in co-relation 2142. Up to 163 conditions per place. [2021-11-23 12:25:04,763 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 71 selfloop transitions, 17 changer transitions 34/242 dead transitions. [2021-11-23 12:25:04,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 242 transitions, 1906 flow [2021-11-23 12:25:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:25:04,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:25:04,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2470 transitions. [2021-11-23 12:25:04,768 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7796717171717171 [2021-11-23 12:25:04,768 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2470 transitions. [2021-11-23 12:25:04,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2470 transitions. [2021-11-23 12:25:04,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:04,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2470 transitions. [2021-11-23 12:25:04,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.22222222222223) internal successors, (2470), 18 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,779 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,779 INFO L186 Difference]: Start difference. First operand has 290 places, 212 transitions, 1378 flow. Second operand 18 states and 2470 transitions. [2021-11-23 12:25:04,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 242 transitions, 1906 flow [2021-11-23 12:25:04,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 242 transitions, 1776 flow, removed 40 selfloop flow, removed 17 redundant places. [2021-11-23 12:25:04,815 INFO L242 Difference]: Finished difference. Result has 283 places, 197 transitions, 1117 flow [2021-11-23 12:25:04,816 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1117, PETRI_PLACES=283, PETRI_TRANSITIONS=197} [2021-11-23 12:25:04,816 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 124 predicate places. [2021-11-23 12:25:04,817 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 197 transitions, 1117 flow [2021-11-23 12:25:04,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,817 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:04,818 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:04,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 12:25:04,818 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2024650717, now seen corresponding path program 10 times [2021-11-23 12:25:04,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:04,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163404266] [2021-11-23 12:25:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:04,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:04,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:04,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163404266] [2021-11-23 12:25:04,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163404266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:04,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:04,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:04,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423733595] [2021-11-23 12:25:04,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:04,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:04,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:04,984 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:04,985 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 197 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:04,985 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:04,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:04,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:05,420 INFO L129 PetriNetUnfolder]: 85/635 cut-off events. [2021-11-23 12:25:05,420 INFO L130 PetriNetUnfolder]: For 2124/2133 co-relation queries the response was YES. [2021-11-23 12:25:05,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 635 events. 85/635 cut-off events. For 2124/2133 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3393 event pairs, 42 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 2020. Up to 157 conditions per place. [2021-11-23 12:25:05,427 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 63 selfloop transitions, 23 changer transitions 30/236 dead transitions. [2021-11-23 12:25:05,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 236 transitions, 1792 flow [2021-11-23 12:25:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:25:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:25:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2480 transitions. [2021-11-23 12:25:05,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7828282828282829 [2021-11-23 12:25:05,432 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2480 transitions. [2021-11-23 12:25:05,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2480 transitions. [2021-11-23 12:25:05,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:05,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2480 transitions. [2021-11-23 12:25:05,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.77777777777777) internal successors, (2480), 18 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:05,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:05,443 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:05,444 INFO L186 Difference]: Start difference. First operand has 283 places, 197 transitions, 1117 flow. Second operand 18 states and 2480 transitions. [2021-11-23 12:25:05,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 236 transitions, 1792 flow [2021-11-23 12:25:05,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 236 transitions, 1654 flow, removed 27 selfloop flow, removed 15 redundant places. [2021-11-23 12:25:05,475 INFO L242 Difference]: Finished difference. Result has 269 places, 200 transitions, 1152 flow [2021-11-23 12:25:05,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1152, PETRI_PLACES=269, PETRI_TRANSITIONS=200} [2021-11-23 12:25:05,476 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 110 predicate places. [2021-11-23 12:25:05,476 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 200 transitions, 1152 flow [2021-11-23 12:25:05,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:05,477 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:05,477 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:05,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 12:25:05,478 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1939418003, now seen corresponding path program 11 times [2021-11-23 12:25:05,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:05,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317308525] [2021-11-23 12:25:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:05,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:05,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:05,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317308525] [2021-11-23 12:25:05,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317308525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:05,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:05,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:05,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944308680] [2021-11-23 12:25:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:05,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:05,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:05,619 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:05,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 200 transitions, 1152 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:05,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:05,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:05,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:06,105 INFO L129 PetriNetUnfolder]: 80/606 cut-off events. [2021-11-23 12:25:06,105 INFO L130 PetriNetUnfolder]: For 1763/1772 co-relation queries the response was YES. [2021-11-23 12:25:06,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 606 events. 80/606 cut-off events. For 1763/1772 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3118 event pairs, 41 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 1862. Up to 155 conditions per place. [2021-11-23 12:25:06,116 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 14 changer transitions 30/225 dead transitions. [2021-11-23 12:25:06,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 225 transitions, 1607 flow [2021-11-23 12:25:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:25:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 12:25:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2021-11-23 12:25:06,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2021-11-23 12:25:06,120 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2021-11-23 12:25:06,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2021-11-23 12:25:06,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:06,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2021-11-23 12:25:06,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.58823529411765) internal successors, (2339), 17 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,131 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,131 INFO L186 Difference]: Start difference. First operand has 269 places, 200 transitions, 1152 flow. Second operand 17 states and 2339 transitions. [2021-11-23 12:25:06,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 225 transitions, 1607 flow [2021-11-23 12:25:06,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 225 transitions, 1514 flow, removed 23 selfloop flow, removed 8 redundant places. [2021-11-23 12:25:06,162 INFO L242 Difference]: Finished difference. Result has 275 places, 191 transitions, 996 flow [2021-11-23 12:25:06,163 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=996, PETRI_PLACES=275, PETRI_TRANSITIONS=191} [2021-11-23 12:25:06,163 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 116 predicate places. [2021-11-23 12:25:06,164 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 191 transitions, 996 flow [2021-11-23 12:25:06,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:06,164 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:06,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 12:25:06,165 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1845027929, now seen corresponding path program 12 times [2021-11-23 12:25:06,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:06,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683046274] [2021-11-23 12:25:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:06,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:06,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:06,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683046274] [2021-11-23 12:25:06,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683046274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:06,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:06,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:06,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509976563] [2021-11-23 12:25:06,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:06,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:06,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:06,303 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:06,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 191 transitions, 996 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:06,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:06,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:06,731 INFO L129 PetriNetUnfolder]: 68/562 cut-off events. [2021-11-23 12:25:06,731 INFO L130 PetriNetUnfolder]: For 1418/1434 co-relation queries the response was YES. [2021-11-23 12:25:06,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 562 events. 68/562 cut-off events. For 1418/1434 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2742 event pairs, 40 based on Foata normal form. 4/542 useless extension candidates. Maximal degree in co-relation 1605. Up to 145 conditions per place. [2021-11-23 12:25:06,741 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 51 selfloop transitions, 3 changer transitions 33/207 dead transitions. [2021-11-23 12:25:06,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 207 transitions, 1278 flow [2021-11-23 12:25:06,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:25:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:25:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2021-11-23 12:25:06,746 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-11-23 12:25:06,747 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2464 transitions. [2021-11-23 12:25:06,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2464 transitions. [2021-11-23 12:25:06,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:06,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2464 transitions. [2021-11-23 12:25:06,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.88888888888889) internal successors, (2464), 18 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,760 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,761 INFO L186 Difference]: Start difference. First operand has 275 places, 191 transitions, 996 flow. Second operand 18 states and 2464 transitions. [2021-11-23 12:25:06,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 207 transitions, 1278 flow [2021-11-23 12:25:06,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 207 transitions, 1191 flow, removed 19 selfloop flow, removed 19 redundant places. [2021-11-23 12:25:06,787 INFO L242 Difference]: Finished difference. Result has 262 places, 171 transitions, 688 flow [2021-11-23 12:25:06,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=688, PETRI_PLACES=262, PETRI_TRANSITIONS=171} [2021-11-23 12:25:06,789 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 103 predicate places. [2021-11-23 12:25:06,790 INFO L470 AbstractCegarLoop]: Abstraction has has 262 places, 171 transitions, 688 flow [2021-11-23 12:25:06,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:06,791 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:06,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 12:25:06,792 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:06,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1718238291, now seen corresponding path program 13 times [2021-11-23 12:25:06,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:06,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713423152] [2021-11-23 12:25:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:06,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:06,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:06,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713423152] [2021-11-23 12:25:06,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713423152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:06,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:06,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:06,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54759061] [2021-11-23 12:25:06,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:06,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:06,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:06,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:06,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:06,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 171 transitions, 688 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:06,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:06,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:06,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:07,431 INFO L129 PetriNetUnfolder]: 77/611 cut-off events. [2021-11-23 12:25:07,431 INFO L130 PetriNetUnfolder]: For 1347/1354 co-relation queries the response was YES. [2021-11-23 12:25:07,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 611 events. 77/611 cut-off events. For 1347/1354 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3189 event pairs, 35 based on Foata normal form. 3/594 useless extension candidates. Maximal degree in co-relation 1731. Up to 128 conditions per place. [2021-11-23 12:25:07,437 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 21 changer transitions 33/230 dead transitions. [2021-11-23 12:25:07,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 230 transitions, 1484 flow [2021-11-23 12:25:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:25:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-23 12:25:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3019 transitions. [2021-11-23 12:25:07,443 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797004132231405 [2021-11-23 12:25:07,443 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3019 transitions. [2021-11-23 12:25:07,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3019 transitions. [2021-11-23 12:25:07,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:07,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3019 transitions. [2021-11-23 12:25:07,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 137.22727272727272) internal successors, (3019), 22 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:07,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:07,457 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 176.0) internal successors, (4048), 23 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:07,458 INFO L186 Difference]: Start difference. First operand has 262 places, 171 transitions, 688 flow. Second operand 22 states and 3019 transitions. [2021-11-23 12:25:07,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 230 transitions, 1484 flow [2021-11-23 12:25:07,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 230 transitions, 1341 flow, removed 30 selfloop flow, removed 18 redundant places. [2021-11-23 12:25:07,479 INFO L242 Difference]: Finished difference. Result has 251 places, 183 transitions, 848 flow [2021-11-23 12:25:07,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=848, PETRI_PLACES=251, PETRI_TRANSITIONS=183} [2021-11-23 12:25:07,481 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2021-11-23 12:25:07,481 INFO L470 AbstractCegarLoop]: Abstraction has has 251 places, 183 transitions, 848 flow [2021-11-23 12:25:07,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:07,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:07,482 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:07,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 12:25:07,482 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:07,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:07,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1231780715, now seen corresponding path program 14 times [2021-11-23 12:25:07,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:07,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227263147] [2021-11-23 12:25:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:07,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:07,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:07,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227263147] [2021-11-23 12:25:07,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227263147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:07,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:07,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:07,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960539037] [2021-11-23 12:25:07,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:07,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:07,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:07,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:07,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:07,629 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:07,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 183 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:07,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:07,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:07,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:08,043 INFO L129 PetriNetUnfolder]: 78/613 cut-off events. [2021-11-23 12:25:08,043 INFO L130 PetriNetUnfolder]: For 1593/1600 co-relation queries the response was YES. [2021-11-23 12:25:08,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 613 events. 78/613 cut-off events. For 1593/1600 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3182 event pairs, 35 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 1834. Up to 134 conditions per place. [2021-11-23 12:25:08,053 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 27 changer transitions 28/229 dead transitions. [2021-11-23 12:25:08,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 229 transitions, 1534 flow [2021-11-23 12:25:08,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:25:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 12:25:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2341 transitions. [2021-11-23 12:25:08,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7824197860962567 [2021-11-23 12:25:08,058 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2341 transitions. [2021-11-23 12:25:08,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2341 transitions. [2021-11-23 12:25:08,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:08,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2341 transitions. [2021-11-23 12:25:08,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.7058823529412) internal successors, (2341), 17 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,069 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,070 INFO L186 Difference]: Start difference. First operand has 251 places, 183 transitions, 848 flow. Second operand 17 states and 2341 transitions. [2021-11-23 12:25:08,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 229 transitions, 1534 flow [2021-11-23 12:25:08,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 229 transitions, 1451 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-11-23 12:25:08,092 INFO L242 Difference]: Finished difference. Result has 252 places, 191 transitions, 1002 flow [2021-11-23 12:25:08,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1002, PETRI_PLACES=252, PETRI_TRANSITIONS=191} [2021-11-23 12:25:08,093 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 93 predicate places. [2021-11-23 12:25:08,093 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 191 transitions, 1002 flow [2021-11-23 12:25:08,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,094 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:08,094 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:08,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 12:25:08,095 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:08,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2064891861, now seen corresponding path program 15 times [2021-11-23 12:25:08,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:08,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791393961] [2021-11-23 12:25:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:08,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:08,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:08,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791393961] [2021-11-23 12:25:08,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791393961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:08,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:08,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:08,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29832842] [2021-11-23 12:25:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:08,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:08,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:08,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:08,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:08,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:08,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 191 transitions, 1002 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:08,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:08,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:08,592 INFO L129 PetriNetUnfolder]: 76/619 cut-off events. [2021-11-23 12:25:08,593 INFO L130 PetriNetUnfolder]: For 1712/1719 co-relation queries the response was YES. [2021-11-23 12:25:08,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 619 events. 76/619 cut-off events. For 1712/1719 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3258 event pairs, 34 based on Foata normal form. 3/601 useless extension candidates. Maximal degree in co-relation 1873. Up to 135 conditions per place. [2021-11-23 12:25:08,600 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 56 selfloop transitions, 25 changer transitions 31/232 dead transitions. [2021-11-23 12:25:08,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 232 transitions, 1623 flow [2021-11-23 12:25:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 12:25:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-23 12:25:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2210 transitions. [2021-11-23 12:25:08,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7848011363636364 [2021-11-23 12:25:08,613 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2210 transitions. [2021-11-23 12:25:08,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2210 transitions. [2021-11-23 12:25:08,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:08,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2210 transitions. [2021-11-23 12:25:08,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.125) internal successors, (2210), 16 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,622 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 176.0) internal successors, (2992), 17 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,622 INFO L186 Difference]: Start difference. First operand has 252 places, 191 transitions, 1002 flow. Second operand 16 states and 2210 transitions. [2021-11-23 12:25:08,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 232 transitions, 1623 flow [2021-11-23 12:25:08,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 232 transitions, 1525 flow, removed 22 selfloop flow, removed 9 redundant places. [2021-11-23 12:25:08,647 INFO L242 Difference]: Finished difference. Result has 258 places, 195 transitions, 1053 flow [2021-11-23 12:25:08,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1053, PETRI_PLACES=258, PETRI_TRANSITIONS=195} [2021-11-23 12:25:08,648 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 99 predicate places. [2021-11-23 12:25:08,648 INFO L470 AbstractCegarLoop]: Abstraction has has 258 places, 195 transitions, 1053 flow [2021-11-23 12:25:08,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:08,649 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:08,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-23 12:25:08,650 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:08,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1061278599, now seen corresponding path program 16 times [2021-11-23 12:25:08,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:08,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769504129] [2021-11-23 12:25:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:08,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:08,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:08,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769504129] [2021-11-23 12:25:08,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769504129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:08,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:08,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:08,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565397245] [2021-11-23 12:25:08,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:08,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:08,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:08,806 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:08,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 195 transitions, 1053 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:08,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:08,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:08,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:09,292 INFO L129 PetriNetUnfolder]: 76/603 cut-off events. [2021-11-23 12:25:09,292 INFO L130 PetriNetUnfolder]: For 1826/1831 co-relation queries the response was YES. [2021-11-23 12:25:09,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 603 events. 76/603 cut-off events. For 1826/1831 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3123 event pairs, 32 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 1856. Up to 127 conditions per place. [2021-11-23 12:25:09,298 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 61 selfloop transitions, 25 changer transitions 33/239 dead transitions. [2021-11-23 12:25:09,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 239 transitions, 1801 flow [2021-11-23 12:25:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:25:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-23 12:25:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2882 transitions. [2021-11-23 12:25:09,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7797619047619048 [2021-11-23 12:25:09,318 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2882 transitions. [2021-11-23 12:25:09,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2882 transitions. [2021-11-23 12:25:09,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:09,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2882 transitions. [2021-11-23 12:25:09,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.23809523809524) internal successors, (2882), 21 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,329 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 176.0) internal successors, (3872), 22 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,329 INFO L186 Difference]: Start difference. First operand has 258 places, 195 transitions, 1053 flow. Second operand 21 states and 2882 transitions. [2021-11-23 12:25:09,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 239 transitions, 1801 flow [2021-11-23 12:25:09,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 239 transitions, 1700 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-11-23 12:25:09,355 INFO L242 Difference]: Finished difference. Result has 276 places, 197 transitions, 1135 flow [2021-11-23 12:25:09,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1135, PETRI_PLACES=276, PETRI_TRANSITIONS=197} [2021-11-23 12:25:09,357 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 117 predicate places. [2021-11-23 12:25:09,357 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 197 transitions, 1135 flow [2021-11-23 12:25:09,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,357 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:09,358 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:09,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-23 12:25:09,358 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:09,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:09,359 INFO L85 PathProgramCache]: Analyzing trace with hash -959990199, now seen corresponding path program 17 times [2021-11-23 12:25:09,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:09,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664706539] [2021-11-23 12:25:09,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:09,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:09,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:09,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664706539] [2021-11-23 12:25:09,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664706539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:09,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:09,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:09,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65773894] [2021-11-23 12:25:09,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:09,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:09,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:09,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:09,486 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:09,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 197 transitions, 1135 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:09,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:09,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:09,883 INFO L129 PetriNetUnfolder]: 64/557 cut-off events. [2021-11-23 12:25:09,883 INFO L130 PetriNetUnfolder]: For 1667/1674 co-relation queries the response was YES. [2021-11-23 12:25:09,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 557 events. 64/557 cut-off events. For 1667/1674 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2703 event pairs, 32 based on Foata normal form. 3/539 useless extension candidates. Maximal degree in co-relation 1663. Up to 127 conditions per place. [2021-11-23 12:25:09,889 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 54 selfloop transitions, 13 changer transitions 33/220 dead transitions. [2021-11-23 12:25:09,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 220 transitions, 1535 flow [2021-11-23 12:25:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:25:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:25:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2469 transitions. [2021-11-23 12:25:09,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7793560606060606 [2021-11-23 12:25:09,895 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2469 transitions. [2021-11-23 12:25:09,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2469 transitions. [2021-11-23 12:25:09,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:09,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2469 transitions. [2021-11-23 12:25:09,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.16666666666666) internal successors, (2469), 18 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,904 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,905 INFO L186 Difference]: Start difference. First operand has 276 places, 197 transitions, 1135 flow. Second operand 18 states and 2469 transitions. [2021-11-23 12:25:09,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 220 transitions, 1535 flow [2021-11-23 12:25:09,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 220 transitions, 1420 flow, removed 33 selfloop flow, removed 16 redundant places. [2021-11-23 12:25:09,932 INFO L242 Difference]: Finished difference. Result has 271 places, 182 transitions, 900 flow [2021-11-23 12:25:09,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=900, PETRI_PLACES=271, PETRI_TRANSITIONS=182} [2021-11-23 12:25:09,933 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 112 predicate places. [2021-11-23 12:25:09,934 INFO L470 AbstractCegarLoop]: Abstraction has has 271 places, 182 transitions, 900 flow [2021-11-23 12:25:09,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:09,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:09,935 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:09,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-23 12:25:09,935 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:09,936 INFO L85 PathProgramCache]: Analyzing trace with hash 875671833, now seen corresponding path program 18 times [2021-11-23 12:25:09,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:09,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627958667] [2021-11-23 12:25:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:09,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:10,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:10,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627958667] [2021-11-23 12:25:10,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627958667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:10,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:10,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:10,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706084726] [2021-11-23 12:25:10,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:10,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:10,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:10,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:10,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:10,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 182 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:10,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:10,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:10,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:10,475 INFO L129 PetriNetUnfolder]: 61/550 cut-off events. [2021-11-23 12:25:10,475 INFO L130 PetriNetUnfolder]: For 1454/1461 co-relation queries the response was YES. [2021-11-23 12:25:10,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 550 events. 61/550 cut-off events. For 1454/1461 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2669 event pairs, 34 based on Foata normal form. 2/530 useless extension candidates. Maximal degree in co-relation 1539. Up to 125 conditions per place. [2021-11-23 12:25:10,481 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 45 selfloop transitions, 12 changer transitions 32/209 dead transitions. [2021-11-23 12:25:10,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 209 transitions, 1300 flow [2021-11-23 12:25:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:25:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:25:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2471 transitions. [2021-11-23 12:25:10,496 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7799873737373737 [2021-11-23 12:25:10,496 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2471 transitions. [2021-11-23 12:25:10,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2471 transitions. [2021-11-23 12:25:10,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:10,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2471 transitions. [2021-11-23 12:25:10,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 137.27777777777777) internal successors, (2471), 18 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:10,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:10,506 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:10,506 INFO L186 Difference]: Start difference. First operand has 271 places, 182 transitions, 900 flow. Second operand 18 states and 2471 transitions. [2021-11-23 12:25:10,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 209 transitions, 1300 flow [2021-11-23 12:25:10,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 209 transitions, 1194 flow, removed 17 selfloop flow, removed 19 redundant places. [2021-11-23 12:25:10,527 INFO L242 Difference]: Finished difference. Result has 254 places, 174 transitions, 758 flow [2021-11-23 12:25:10,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=758, PETRI_PLACES=254, PETRI_TRANSITIONS=174} [2021-11-23 12:25:10,528 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 95 predicate places. [2021-11-23 12:25:10,528 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 174 transitions, 758 flow [2021-11-23 12:25:10,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:10,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:10,529 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:10,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-23 12:25:10,529 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:10,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1552531509, now seen corresponding path program 19 times [2021-11-23 12:25:10,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:10,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37843350] [2021-11-23 12:25:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:10,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:10,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:10,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37843350] [2021-11-23 12:25:10,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37843350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:10,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:10,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:10,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21061083] [2021-11-23 12:25:10,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:10,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:10,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:10,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:10,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:10,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 174 transitions, 758 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:10,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:10,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:10,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:11,111 INFO L129 PetriNetUnfolder]: 58/525 cut-off events. [2021-11-23 12:25:11,111 INFO L130 PetriNetUnfolder]: For 1042/1051 co-relation queries the response was YES. [2021-11-23 12:25:11,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 525 events. 58/525 cut-off events. For 1042/1051 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2458 event pairs, 32 based on Foata normal form. 5/508 useless extension candidates. Maximal degree in co-relation 1417. Up to 126 conditions per place. [2021-11-23 12:25:11,116 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 40 selfloop transitions, 17 changer transitions 32/209 dead transitions. [2021-11-23 12:25:11,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 209 transitions, 1272 flow [2021-11-23 12:25:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:25:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 12:25:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2339 transitions. [2021-11-23 12:25:11,121 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7817513368983957 [2021-11-23 12:25:11,121 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2339 transitions. [2021-11-23 12:25:11,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2339 transitions. [2021-11-23 12:25:11,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:11,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2339 transitions. [2021-11-23 12:25:11,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.58823529411765) internal successors, (2339), 17 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,130 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 176.0) internal successors, (3168), 18 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,130 INFO L186 Difference]: Start difference. First operand has 254 places, 174 transitions, 758 flow. Second operand 17 states and 2339 transitions. [2021-11-23 12:25:11,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 209 transitions, 1272 flow [2021-11-23 12:25:11,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 209 transitions, 1171 flow, removed 25 selfloop flow, removed 15 redundant places. [2021-11-23 12:25:11,149 INFO L242 Difference]: Finished difference. Result has 246 places, 175 transitions, 778 flow [2021-11-23 12:25:11,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=778, PETRI_PLACES=246, PETRI_TRANSITIONS=175} [2021-11-23 12:25:11,150 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 87 predicate places. [2021-11-23 12:25:11,151 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 175 transitions, 778 flow [2021-11-23 12:25:11,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:11,151 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:11,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-23 12:25:11,152 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:11,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:11,153 INFO L85 PathProgramCache]: Analyzing trace with hash -107335275, now seen corresponding path program 20 times [2021-11-23 12:25:11,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:11,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504785868] [2021-11-23 12:25:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:11,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:11,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:11,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504785868] [2021-11-23 12:25:11,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504785868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:11,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:11,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:25:11,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706553762] [2021-11-23 12:25:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:11,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:25:11,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:25:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:25:11,315 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 176 [2021-11-23 12:25:11,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 175 transitions, 778 flow. Second operand has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:11,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 176 [2021-11-23 12:25:11,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:11,643 INFO L129 PetriNetUnfolder]: 46/447 cut-off events. [2021-11-23 12:25:11,643 INFO L130 PetriNetUnfolder]: For 724/729 co-relation queries the response was YES. [2021-11-23 12:25:11,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 447 events. 46/447 cut-off events. For 724/729 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1889 event pairs, 31 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 1126. Up to 103 conditions per place. [2021-11-23 12:25:11,647 INFO L132 encePairwiseOnDemand]: 163/176 looper letters, 29 selfloop transitions, 0 changer transitions 43/186 dead transitions. [2021-11-23 12:25:11,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 186 transitions, 950 flow [2021-11-23 12:25:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:25:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-23 12:25:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2459 transitions. [2021-11-23 12:25:11,650 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7761994949494949 [2021-11-23 12:25:11,650 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2459 transitions. [2021-11-23 12:25:11,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2459 transitions. [2021-11-23 12:25:11,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:11,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2459 transitions. [2021-11-23 12:25:11,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.61111111111111) internal successors, (2459), 18 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,659 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 176.0) internal successors, (3344), 19 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,660 INFO L186 Difference]: Start difference. First operand has 246 places, 175 transitions, 778 flow. Second operand 18 states and 2459 transitions. [2021-11-23 12:25:11,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 186 transitions, 950 flow [2021-11-23 12:25:11,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 186 transitions, 864 flow, removed 23 selfloop flow, removed 13 redundant places. [2021-11-23 12:25:11,675 INFO L242 Difference]: Finished difference. Result has 245 places, 143 transitions, 402 flow [2021-11-23 12:25:11,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=402, PETRI_PLACES=245, PETRI_TRANSITIONS=143} [2021-11-23 12:25:11,676 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 86 predicate places. [2021-11-23 12:25:11,676 INFO L470 AbstractCegarLoop]: Abstraction has has 245 places, 143 transitions, 402 flow [2021-11-23 12:25:11,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.8) internal successors, (1358), 10 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:11,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:11,677 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:11,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-23 12:25:11,678 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:11,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2118169429, now seen corresponding path program 1 times [2021-11-23 12:25:11,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:11,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270676598] [2021-11-23 12:25:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:11,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:12,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:12,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270676598] [2021-11-23 12:25:12,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270676598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:12,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:12,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:12,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109983144] [2021-11-23 12:25:12,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:12,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:12,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:12,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:12,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:12,423 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:12,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 143 transitions, 402 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:12,427 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:12,427 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:12,427 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:16,465 INFO L129 PetriNetUnfolder]: 367/1332 cut-off events. [2021-11-23 12:25:16,466 INFO L130 PetriNetUnfolder]: For 1824/1826 co-relation queries the response was YES. [2021-11-23 12:25:16,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 1332 events. 367/1332 cut-off events. For 1824/1826 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7731 event pairs, 11 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 3169. Up to 126 conditions per place. [2021-11-23 12:25:16,477 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 192 selfloop transitions, 33 changer transitions 49/361 dead transitions. [2021-11-23 12:25:16,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 361 transitions, 1995 flow [2021-11-23 12:25:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 12:25:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-11-23 12:25:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4974 transitions. [2021-11-23 12:25:16,483 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6423037190082644 [2021-11-23 12:25:16,483 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4974 transitions. [2021-11-23 12:25:16,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4974 transitions. [2021-11-23 12:25:16,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:16,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4974 transitions. [2021-11-23 12:25:16,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 113.04545454545455) internal successors, (4974), 44 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:16,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 176.0) internal successors, (7920), 45 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:16,497 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 176.0) internal successors, (7920), 45 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:16,497 INFO L186 Difference]: Start difference. First operand has 245 places, 143 transitions, 402 flow. Second operand 44 states and 4974 transitions. [2021-11-23 12:25:16,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 361 transitions, 1995 flow [2021-11-23 12:25:16,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 361 transitions, 1819 flow, removed 87 selfloop flow, removed 11 redundant places. [2021-11-23 12:25:16,515 INFO L242 Difference]: Finished difference. Result has 266 places, 166 transitions, 709 flow [2021-11-23 12:25:16,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=709, PETRI_PLACES=266, PETRI_TRANSITIONS=166} [2021-11-23 12:25:16,516 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 107 predicate places. [2021-11-23 12:25:16,516 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 166 transitions, 709 flow [2021-11-23 12:25:16,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:16,517 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:16,517 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:16,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-23 12:25:16,518 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:16,518 INFO L85 PathProgramCache]: Analyzing trace with hash 993358903, now seen corresponding path program 2 times [2021-11-23 12:25:16,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:16,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836027086] [2021-11-23 12:25:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:16,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:17,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:17,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836027086] [2021-11-23 12:25:17,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836027086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:17,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:17,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:17,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459089104] [2021-11-23 12:25:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:17,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:17,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:17,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:17,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:17,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:17,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 166 transitions, 709 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:17,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:17,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:17,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:20,718 INFO L129 PetriNetUnfolder]: 391/1430 cut-off events. [2021-11-23 12:25:20,718 INFO L130 PetriNetUnfolder]: For 5651/5653 co-relation queries the response was YES. [2021-11-23 12:25:20,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4460 conditions, 1430 events. 391/1430 cut-off events. For 5651/5653 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 8503 event pairs, 29 based on Foata normal form. 1/1381 useless extension candidates. Maximal degree in co-relation 4380. Up to 130 conditions per place. [2021-11-23 12:25:20,743 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 196 selfloop transitions, 44 changer transitions 40/367 dead transitions. [2021-11-23 12:25:20,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 367 transitions, 2517 flow [2021-11-23 12:25:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:25:20,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:25:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3991 transitions. [2021-11-23 12:25:20,748 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6478896103896103 [2021-11-23 12:25:20,749 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3991 transitions. [2021-11-23 12:25:20,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3991 transitions. [2021-11-23 12:25:20,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:20,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3991 transitions. [2021-11-23 12:25:20,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.02857142857142) internal successors, (3991), 35 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:20,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:20,765 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:20,765 INFO L186 Difference]: Start difference. First operand has 266 places, 166 transitions, 709 flow. Second operand 35 states and 3991 transitions. [2021-11-23 12:25:20,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 367 transitions, 2517 flow [2021-11-23 12:25:20,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 367 transitions, 2132 flow, removed 146 selfloop flow, removed 27 redundant places. [2021-11-23 12:25:20,796 INFO L242 Difference]: Finished difference. Result has 272 places, 188 transitions, 935 flow [2021-11-23 12:25:20,797 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=935, PETRI_PLACES=272, PETRI_TRANSITIONS=188} [2021-11-23 12:25:20,797 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 113 predicate places. [2021-11-23 12:25:20,798 INFO L470 AbstractCegarLoop]: Abstraction has has 272 places, 188 transitions, 935 flow [2021-11-23 12:25:20,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:20,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:20,799 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:20,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-23 12:25:20,799 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1725278923, now seen corresponding path program 3 times [2021-11-23 12:25:20,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:20,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653545654] [2021-11-23 12:25:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:20,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:21,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:21,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653545654] [2021-11-23 12:25:21,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653545654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:21,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:21,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:21,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536417063] [2021-11-23 12:25:21,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:21,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:21,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:21,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:21,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 188 transitions, 935 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:21,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:21,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:21,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:27,596 INFO L129 PetriNetUnfolder]: 434/1545 cut-off events. [2021-11-23 12:25:27,596 INFO L130 PetriNetUnfolder]: For 4884/4886 co-relation queries the response was YES. [2021-11-23 12:25:27,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4990 conditions, 1545 events. 434/1545 cut-off events. For 4884/4886 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9550 event pairs, 11 based on Foata normal form. 1/1520 useless extension candidates. Maximal degree in co-relation 4908. Up to 141 conditions per place. [2021-11-23 12:25:27,623 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 251 selfloop transitions, 34 changer transitions 124/496 dead transitions. [2021-11-23 12:25:27,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 496 transitions, 3808 flow [2021-11-23 12:25:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-23 12:25:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-11-23 12:25:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7313 transitions. [2021-11-23 12:25:27,630 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6392482517482517 [2021-11-23 12:25:27,630 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7313 transitions. [2021-11-23 12:25:27,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7313 transitions. [2021-11-23 12:25:27,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:27,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7313 transitions. [2021-11-23 12:25:27,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 112.50769230769231) internal successors, (7313), 65 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:27,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:27,653 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 176.0) internal successors, (11616), 66 states have internal predecessors, (11616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:27,654 INFO L186 Difference]: Start difference. First operand has 272 places, 188 transitions, 935 flow. Second operand 65 states and 7313 transitions. [2021-11-23 12:25:27,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 496 transitions, 3808 flow [2021-11-23 12:25:27,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 496 transitions, 3241 flow, removed 119 selfloop flow, removed 21 redundant places. [2021-11-23 12:25:27,697 INFO L242 Difference]: Finished difference. Result has 353 places, 188 transitions, 953 flow [2021-11-23 12:25:27,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=953, PETRI_PLACES=353, PETRI_TRANSITIONS=188} [2021-11-23 12:25:27,698 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 194 predicate places. [2021-11-23 12:25:27,699 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 188 transitions, 953 flow [2021-11-23 12:25:27,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:27,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:27,700 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:27,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-23 12:25:27,700 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:27,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:27,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1337364947, now seen corresponding path program 4 times [2021-11-23 12:25:27,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:27,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841400369] [2021-11-23 12:25:27,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:27,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:28,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:28,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841400369] [2021-11-23 12:25:28,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841400369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:28,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:28,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:28,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463476859] [2021-11-23 12:25:28,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:28,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:28,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:28,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:28,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:28,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 188 transitions, 953 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:28,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:28,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:28,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:32,057 INFO L129 PetriNetUnfolder]: 477/1682 cut-off events. [2021-11-23 12:25:32,058 INFO L130 PetriNetUnfolder]: For 12076/12078 co-relation queries the response was YES. [2021-11-23 12:25:32,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6753 conditions, 1682 events. 477/1682 cut-off events. For 12076/12078 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10448 event pairs, 51 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 6632. Up to 195 conditions per place. [2021-11-23 12:25:32,081 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 224 selfloop transitions, 45 changer transitions 44/400 dead transitions. [2021-11-23 12:25:32,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 400 transitions, 3395 flow [2021-11-23 12:25:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:25:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:25:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4007 transitions. [2021-11-23 12:25:32,085 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.650487012987013 [2021-11-23 12:25:32,085 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4007 transitions. [2021-11-23 12:25:32,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4007 transitions. [2021-11-23 12:25:32,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:32,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4007 transitions. [2021-11-23 12:25:32,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.48571428571428) internal successors, (4007), 35 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:32,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:32,094 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:32,094 INFO L186 Difference]: Start difference. First operand has 353 places, 188 transitions, 953 flow. Second operand 35 states and 4007 transitions. [2021-11-23 12:25:32,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 400 transitions, 3395 flow [2021-11-23 12:25:32,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 400 transitions, 2819 flow, removed 150 selfloop flow, removed 60 redundant places. [2021-11-23 12:25:32,143 INFO L242 Difference]: Finished difference. Result has 300 places, 212 transitions, 1241 flow [2021-11-23 12:25:32,143 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1241, PETRI_PLACES=300, PETRI_TRANSITIONS=212} [2021-11-23 12:25:32,144 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 141 predicate places. [2021-11-23 12:25:32,144 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 212 transitions, 1241 flow [2021-11-23 12:25:32,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:32,145 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:32,145 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:32,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-23 12:25:32,146 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:32,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1760046429, now seen corresponding path program 5 times [2021-11-23 12:25:32,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:32,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132540336] [2021-11-23 12:25:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:32,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:32,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:32,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:32,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132540336] [2021-11-23 12:25:32,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132540336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:32,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:32,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:32,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390620518] [2021-11-23 12:25:32,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:32,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:32,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:32,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:32,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:32,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:32,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 212 transitions, 1241 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:32,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:32,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:32,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:36,400 INFO L129 PetriNetUnfolder]: 561/1919 cut-off events. [2021-11-23 12:25:36,401 INFO L130 PetriNetUnfolder]: For 11675/11677 co-relation queries the response was YES. [2021-11-23 12:25:36,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7528 conditions, 1919 events. 561/1919 cut-off events. For 11675/11677 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 12337 event pairs, 57 based on Foata normal form. 1/1887 useless extension candidates. Maximal degree in co-relation 7431. Up to 213 conditions per place. [2021-11-23 12:25:36,425 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 260 selfloop transitions, 51 changer transitions 36/434 dead transitions. [2021-11-23 12:25:36,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 434 transitions, 3990 flow [2021-11-23 12:25:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:25:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:25:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4001 transitions. [2021-11-23 12:25:36,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.649512987012987 [2021-11-23 12:25:36,430 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4001 transitions. [2021-11-23 12:25:36,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4001 transitions. [2021-11-23 12:25:36,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:36,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4001 transitions. [2021-11-23 12:25:36,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.31428571428572) internal successors, (4001), 35 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:36,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:36,442 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:36,443 INFO L186 Difference]: Start difference. First operand has 300 places, 212 transitions, 1241 flow. Second operand 35 states and 4001 transitions. [2021-11-23 12:25:36,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 434 transitions, 3990 flow [2021-11-23 12:25:36,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 434 transitions, 3520 flow, removed 150 selfloop flow, removed 19 redundant places. [2021-11-23 12:25:36,503 INFO L242 Difference]: Finished difference. Result has 325 places, 236 transitions, 1600 flow [2021-11-23 12:25:36,503 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1600, PETRI_PLACES=325, PETRI_TRANSITIONS=236} [2021-11-23 12:25:36,504 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 166 predicate places. [2021-11-23 12:25:36,504 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 236 transitions, 1600 flow [2021-11-23 12:25:36,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:36,505 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:36,505 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:36,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-23 12:25:36,506 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:36,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:36,506 INFO L85 PathProgramCache]: Analyzing trace with hash -523807331, now seen corresponding path program 6 times [2021-11-23 12:25:36,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:36,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736577733] [2021-11-23 12:25:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:36,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:37,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:37,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736577733] [2021-11-23 12:25:37,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736577733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:37,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:37,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:37,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42667975] [2021-11-23 12:25:37,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:37,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:37,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:37,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:37,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:37,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:37,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 236 transitions, 1600 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:37,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:37,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:37,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:40,839 INFO L129 PetriNetUnfolder]: 702/2361 cut-off events. [2021-11-23 12:25:40,839 INFO L130 PetriNetUnfolder]: For 17721/17723 co-relation queries the response was YES. [2021-11-23 12:25:40,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9904 conditions, 2361 events. 702/2361 cut-off events. For 17721/17723 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16361 event pairs, 106 based on Foata normal form. 1/2286 useless extension candidates. Maximal degree in co-relation 9795. Up to 406 conditions per place. [2021-11-23 12:25:40,877 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 286 selfloop transitions, 46 changer transitions 44/463 dead transitions. [2021-11-23 12:25:40,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 463 transitions, 4669 flow [2021-11-23 12:25:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:25:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:25:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4011 transitions. [2021-11-23 12:25:40,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6511363636363636 [2021-11-23 12:25:40,881 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4011 transitions. [2021-11-23 12:25:40,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4011 transitions. [2021-11-23 12:25:40,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:40,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4011 transitions. [2021-11-23 12:25:40,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.6) internal successors, (4011), 35 states have internal predecessors, (4011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:40,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:40,891 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:40,891 INFO L186 Difference]: Start difference. First operand has 325 places, 236 transitions, 1600 flow. Second operand 35 states and 4011 transitions. [2021-11-23 12:25:40,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 463 transitions, 4669 flow [2021-11-23 12:25:40,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 463 transitions, 4209 flow, removed 140 selfloop flow, removed 19 redundant places. [2021-11-23 12:25:40,960 INFO L242 Difference]: Finished difference. Result has 352 places, 262 transitions, 1917 flow [2021-11-23 12:25:40,961 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1917, PETRI_PLACES=352, PETRI_TRANSITIONS=262} [2021-11-23 12:25:40,962 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 193 predicate places. [2021-11-23 12:25:40,962 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 262 transitions, 1917 flow [2021-11-23 12:25:40,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:40,963 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:40,963 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:40,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-23 12:25:40,964 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:40,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -993424271, now seen corresponding path program 7 times [2021-11-23 12:25:40,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:40,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469019037] [2021-11-23 12:25:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:40,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:41,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469019037] [2021-11-23 12:25:41,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469019037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:41,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:41,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:41,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666805998] [2021-11-23 12:25:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:41,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:41,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:41,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:41,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 262 transitions, 1917 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:41,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:41,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:41,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:45,658 INFO L129 PetriNetUnfolder]: 832/2728 cut-off events. [2021-11-23 12:25:45,658 INFO L130 PetriNetUnfolder]: For 27218/27220 co-relation queries the response was YES. [2021-11-23 12:25:45,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12615 conditions, 2728 events. 832/2728 cut-off events. For 27218/27220 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 19634 event pairs, 139 based on Foata normal form. 1/2681 useless extension candidates. Maximal degree in co-relation 12492. Up to 478 conditions per place. [2021-11-23 12:25:45,702 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 326 selfloop transitions, 53 changer transitions 36/502 dead transitions. [2021-11-23 12:25:45,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 502 transitions, 5540 flow [2021-11-23 12:25:45,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:25:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:25:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4004 transitions. [2021-11-23 12:25:45,706 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.65 [2021-11-23 12:25:45,706 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4004 transitions. [2021-11-23 12:25:45,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4004 transitions. [2021-11-23 12:25:45,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:45,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4004 transitions. [2021-11-23 12:25:45,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.4) internal successors, (4004), 35 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:45,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:45,715 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:45,716 INFO L186 Difference]: Start difference. First operand has 352 places, 262 transitions, 1917 flow. Second operand 35 states and 4004 transitions. [2021-11-23 12:25:45,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 502 transitions, 5540 flow [2021-11-23 12:25:45,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 502 transitions, 4975 flow, removed 222 selfloop flow, removed 19 redundant places. [2021-11-23 12:25:45,826 INFO L242 Difference]: Finished difference. Result has 379 places, 288 transitions, 2328 flow [2021-11-23 12:25:45,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2328, PETRI_PLACES=379, PETRI_TRANSITIONS=288} [2021-11-23 12:25:45,827 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 220 predicate places. [2021-11-23 12:25:45,827 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 288 transitions, 2328 flow [2021-11-23 12:25:45,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:45,828 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:45,829 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:45,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-23 12:25:45,829 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:45,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:45,830 INFO L85 PathProgramCache]: Analyzing trace with hash -796729207, now seen corresponding path program 8 times [2021-11-23 12:25:45,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:45,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939552118] [2021-11-23 12:25:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:45,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:46,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:46,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939552118] [2021-11-23 12:25:46,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939552118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:46,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:46,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:46,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851394897] [2021-11-23 12:25:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:46,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:46,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:46,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:46,499 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:46,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 288 transitions, 2328 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:46,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:46,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:46,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:51,114 INFO L129 PetriNetUnfolder]: 987/3247 cut-off events. [2021-11-23 12:25:51,114 INFO L130 PetriNetUnfolder]: For 38168/38170 co-relation queries the response was YES. [2021-11-23 12:25:51,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15815 conditions, 3247 events. 987/3247 cut-off events. For 38168/38170 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 24537 event pairs, 222 based on Foata normal form. 1/3140 useless extension candidates. Maximal degree in co-relation 15679. Up to 682 conditions per place. [2021-11-23 12:25:51,179 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 364 selfloop transitions, 46 changer transitions 44/541 dead transitions. [2021-11-23 12:25:51,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 541 transitions, 6341 flow [2021-11-23 12:25:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:25:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:25:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4027 transitions. [2021-11-23 12:25:51,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6537337662337662 [2021-11-23 12:25:51,184 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4027 transitions. [2021-11-23 12:25:51,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4027 transitions. [2021-11-23 12:25:51,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:51,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4027 transitions. [2021-11-23 12:25:51,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.05714285714286) internal successors, (4027), 35 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:51,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:51,196 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:51,196 INFO L186 Difference]: Start difference. First operand has 379 places, 288 transitions, 2328 flow. Second operand 35 states and 4027 transitions. [2021-11-23 12:25:51,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 541 transitions, 6341 flow [2021-11-23 12:25:51,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 541 transitions, 5770 flow, removed 221 selfloop flow, removed 19 redundant places. [2021-11-23 12:25:51,365 INFO L242 Difference]: Finished difference. Result has 408 places, 315 transitions, 2682 flow [2021-11-23 12:25:51,365 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2682, PETRI_PLACES=408, PETRI_TRANSITIONS=315} [2021-11-23 12:25:51,366 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 249 predicate places. [2021-11-23 12:25:51,366 INFO L470 AbstractCegarLoop]: Abstraction has has 408 places, 315 transitions, 2682 flow [2021-11-23 12:25:51,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:51,366 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:51,366 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:51,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-23 12:25:51,367 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:51,367 INFO L85 PathProgramCache]: Analyzing trace with hash 995822819, now seen corresponding path program 9 times [2021-11-23 12:25:51,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:51,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81221120] [2021-11-23 12:25:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:51,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:52,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:52,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81221120] [2021-11-23 12:25:52,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81221120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:52,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:52,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:52,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299193152] [2021-11-23 12:25:52,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:52,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:52,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:52,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:52,142 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:52,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 315 transitions, 2682 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:52,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:52,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:52,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:25:57,322 INFO L129 PetriNetUnfolder]: 1146/3803 cut-off events. [2021-11-23 12:25:57,322 INFO L130 PetriNetUnfolder]: For 54192/54194 co-relation queries the response was YES. [2021-11-23 12:25:57,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19630 conditions, 3803 events. 1146/3803 cut-off events. For 54192/54194 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 30263 event pairs, 319 based on Foata normal form. 1/3729 useless extension candidates. Maximal degree in co-relation 19479. Up to 901 conditions per place. [2021-11-23 12:25:57,419 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 406 selfloop transitions, 50 changer transitions 36/579 dead transitions. [2021-11-23 12:25:57,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 579 transitions, 7202 flow [2021-11-23 12:25:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:25:57,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:25:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4020 transitions. [2021-11-23 12:25:57,424 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6525974025974026 [2021-11-23 12:25:57,424 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4020 transitions. [2021-11-23 12:25:57,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4020 transitions. [2021-11-23 12:25:57,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:25:57,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4020 transitions. [2021-11-23 12:25:57,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.85714285714286) internal successors, (4020), 35 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:57,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:57,435 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:57,435 INFO L186 Difference]: Start difference. First operand has 408 places, 315 transitions, 2682 flow. Second operand 35 states and 4020 transitions. [2021-11-23 12:25:57,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 579 transitions, 7202 flow [2021-11-23 12:25:57,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 579 transitions, 6513 flow, removed 304 selfloop flow, removed 19 redundant places. [2021-11-23 12:25:57,745 INFO L242 Difference]: Finished difference. Result has 437 places, 342 transitions, 3118 flow [2021-11-23 12:25:57,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3118, PETRI_PLACES=437, PETRI_TRANSITIONS=342} [2021-11-23 12:25:57,746 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 278 predicate places. [2021-11-23 12:25:57,746 INFO L470 AbstractCegarLoop]: Abstraction has has 437 places, 342 transitions, 3118 flow [2021-11-23 12:25:57,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:57,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:25:57,747 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:25:57,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-23 12:25:57,747 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:25:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:25:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1306762977, now seen corresponding path program 10 times [2021-11-23 12:25:57,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:25:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144117871] [2021-11-23 12:25:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:25:57,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:25:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:25:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:25:58,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:25:58,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144117871] [2021-11-23 12:25:58,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144117871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:25:58,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:25:58,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:25:58,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383269125] [2021-11-23 12:25:58,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:25:58,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:25:58,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:25:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:25:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:25:58,458 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:25:58,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 342 transitions, 3118 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:25:58,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:25:58,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:25:58,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:26:03,925 INFO L129 PetriNetUnfolder]: 1367/4583 cut-off events. [2021-11-23 12:26:03,926 INFO L130 PetriNetUnfolder]: For 74080/74088 co-relation queries the response was YES. [2021-11-23 12:26:04,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24277 conditions, 4583 events. 1367/4583 cut-off events. For 74080/74088 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 39098 event pairs, 251 based on Foata normal form. 1/4462 useless extension candidates. Maximal degree in co-relation 24112. Up to 1251 conditions per place. [2021-11-23 12:26:04,022 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 462 selfloop transitions, 80 changer transitions 40/669 dead transitions. [2021-11-23 12:26:04,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 669 transitions, 9323 flow [2021-11-23 12:26:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:26:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:26:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4017 transitions. [2021-11-23 12:26:04,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6521103896103896 [2021-11-23 12:26:04,026 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4017 transitions. [2021-11-23 12:26:04,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4017 transitions. [2021-11-23 12:26:04,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:26:04,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4017 transitions. [2021-11-23 12:26:04,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.77142857142857) internal successors, (4017), 35 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:04,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:04,036 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:04,036 INFO L186 Difference]: Start difference. First operand has 437 places, 342 transitions, 3118 flow. Second operand 35 states and 4017 transitions. [2021-11-23 12:26:04,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 669 transitions, 9323 flow [2021-11-23 12:26:04,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 669 transitions, 8524 flow, removed 370 selfloop flow, removed 19 redundant places. [2021-11-23 12:26:04,423 INFO L242 Difference]: Finished difference. Result has 468 places, 372 transitions, 3696 flow [2021-11-23 12:26:04,423 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3696, PETRI_PLACES=468, PETRI_TRANSITIONS=372} [2021-11-23 12:26:04,424 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 309 predicate places. [2021-11-23 12:26:04,424 INFO L470 AbstractCegarLoop]: Abstraction has has 468 places, 372 transitions, 3696 flow [2021-11-23 12:26:04,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:04,425 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:26:04,425 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:04,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-23 12:26:04,426 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:26:04,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:04,426 INFO L85 PathProgramCache]: Analyzing trace with hash 542780185, now seen corresponding path program 11 times [2021-11-23 12:26:04,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:04,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477100924] [2021-11-23 12:26:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:04,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:05,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:05,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477100924] [2021-11-23 12:26:05,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477100924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:26:05,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:26:05,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:26:05,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940103370] [2021-11-23 12:26:05,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:26:05,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:26:05,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:05,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:26:05,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:26:05,157 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:26:05,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 372 transitions, 3696 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:05,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:26:05,160 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:26:05,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:26:11,209 INFO L129 PetriNetUnfolder]: 1568/5193 cut-off events. [2021-11-23 12:26:11,209 INFO L130 PetriNetUnfolder]: For 99248/99256 co-relation queries the response was YES. [2021-11-23 12:26:11,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29387 conditions, 5193 events. 1568/5193 cut-off events. For 99248/99256 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 45453 event pairs, 411 based on Foata normal form. 1/5017 useless extension candidates. Maximal degree in co-relation 29206. Up to 1562 conditions per place. [2021-11-23 12:26:11,330 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 464 selfloop transitions, 51 changer transitions 44/646 dead transitions. [2021-11-23 12:26:11,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 646 transitions, 8854 flow [2021-11-23 12:26:11,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:26:11,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:26:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4043 transitions. [2021-11-23 12:26:11,334 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6563311688311688 [2021-11-23 12:26:11,334 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4043 transitions. [2021-11-23 12:26:11,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4043 transitions. [2021-11-23 12:26:11,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:26:11,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4043 transitions. [2021-11-23 12:26:11,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.51428571428572) internal successors, (4043), 35 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:11,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:11,343 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:11,343 INFO L186 Difference]: Start difference. First operand has 468 places, 372 transitions, 3696 flow. Second operand 35 states and 4043 transitions. [2021-11-23 12:26:11,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 646 transitions, 8854 flow [2021-11-23 12:26:11,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 646 transitions, 8244 flow, removed 304 selfloop flow, removed 15 redundant places. [2021-11-23 12:26:11,962 INFO L242 Difference]: Finished difference. Result has 502 places, 401 transitions, 4145 flow [2021-11-23 12:26:11,963 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4145, PETRI_PLACES=502, PETRI_TRANSITIONS=401} [2021-11-23 12:26:11,963 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 343 predicate places. [2021-11-23 12:26:11,964 INFO L470 AbstractCegarLoop]: Abstraction has has 502 places, 401 transitions, 4145 flow [2021-11-23 12:26:11,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:11,964 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:26:11,965 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:11,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-23 12:26:11,965 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:26:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:11,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1070449241, now seen corresponding path program 12 times [2021-11-23 12:26:11,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:11,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614289530] [2021-11-23 12:26:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:11,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:12,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:12,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614289530] [2021-11-23 12:26:12,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614289530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:26:12,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:26:12,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:26:12,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255238446] [2021-11-23 12:26:12,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:26:12,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:26:12,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:12,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:26:12,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:26:12,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:26:12,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 401 transitions, 4145 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:12,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:26:12,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:26:12,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:26:19,238 INFO L129 PetriNetUnfolder]: 1772/5871 cut-off events. [2021-11-23 12:26:19,238 INFO L130 PetriNetUnfolder]: For 119084/119104 co-relation queries the response was YES. [2021-11-23 12:26:19,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33730 conditions, 5871 events. 1772/5871 cut-off events. For 119084/119104 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 52897 event pairs, 499 based on Foata normal form. 5/5772 useless extension candidates. Maximal degree in co-relation 33533. Up to 1992 conditions per place. [2021-11-23 12:26:19,389 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 512 selfloop transitions, 51 changer transitions 36/686 dead transitions. [2021-11-23 12:26:19,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 686 transitions, 9531 flow [2021-11-23 12:26:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:26:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:26:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4036 transitions. [2021-11-23 12:26:19,393 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6551948051948052 [2021-11-23 12:26:19,393 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4036 transitions. [2021-11-23 12:26:19,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4036 transitions. [2021-11-23 12:26:19,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:26:19,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4036 transitions. [2021-11-23 12:26:19,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 115.31428571428572) internal successors, (4036), 35 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:19,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:19,402 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:19,402 INFO L186 Difference]: Start difference. First operand has 502 places, 401 transitions, 4145 flow. Second operand 35 states and 4036 transitions. [2021-11-23 12:26:19,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 686 transitions, 9531 flow [2021-11-23 12:26:20,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 686 transitions, 8791 flow, removed 338 selfloop flow, removed 18 redundant places. [2021-11-23 12:26:20,273 INFO L242 Difference]: Finished difference. Result has 533 places, 429 transitions, 4625 flow [2021-11-23 12:26:20,274 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4625, PETRI_PLACES=533, PETRI_TRANSITIONS=429} [2021-11-23 12:26:20,274 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 374 predicate places. [2021-11-23 12:26:20,274 INFO L470 AbstractCegarLoop]: Abstraction has has 533 places, 429 transitions, 4625 flow [2021-11-23 12:26:20,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:20,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:26:20,275 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:20,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-23 12:26:20,275 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:26:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:20,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1367326681, now seen corresponding path program 13 times [2021-11-23 12:26:20,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:20,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155986294] [2021-11-23 12:26:20,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:20,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:21,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:21,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155986294] [2021-11-23 12:26:21,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155986294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:26:21,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:26:21,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:26:21,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946956304] [2021-11-23 12:26:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:26:21,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:26:21,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:26:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:26:21,021 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:26:21,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 429 transitions, 4625 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:21,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:26:21,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:26:21,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:26:28,329 INFO L129 PetriNetUnfolder]: 2040/6839 cut-off events. [2021-11-23 12:26:28,329 INFO L130 PetriNetUnfolder]: For 154434/154458 co-relation queries the response was YES. [2021-11-23 12:26:28,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39807 conditions, 6839 events. 2040/6839 cut-off events. For 154434/154458 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 64146 event pairs, 733 based on Foata normal form. 5/6606 useless extension candidates. Maximal degree in co-relation 39595. Up to 1903 conditions per place. [2021-11-23 12:26:28,539 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 556 selfloop transitions, 108 changer transitions 40/791 dead transitions. [2021-11-23 12:26:28,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 791 transitions, 12460 flow [2021-11-23 12:26:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:26:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:26:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4024 transitions. [2021-11-23 12:26:28,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6532467532467533 [2021-11-23 12:26:28,544 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4024 transitions. [2021-11-23 12:26:28,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4024 transitions. [2021-11-23 12:26:28,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:26:28,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4024 transitions. [2021-11-23 12:26:28,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.97142857142858) internal successors, (4024), 35 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:28,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:28,552 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:28,553 INFO L186 Difference]: Start difference. First operand has 533 places, 429 transitions, 4625 flow. Second operand 35 states and 4024 transitions. [2021-11-23 12:26:28,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 791 transitions, 12460 flow [2021-11-23 12:26:29,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 791 transitions, 11393 flow, removed 506 selfloop flow, removed 18 redundant places. [2021-11-23 12:26:29,691 INFO L242 Difference]: Finished difference. Result has 566 places, 460 transitions, 5333 flow [2021-11-23 12:26:29,692 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5333, PETRI_PLACES=566, PETRI_TRANSITIONS=460} [2021-11-23 12:26:29,693 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 407 predicate places. [2021-11-23 12:26:29,693 INFO L470 AbstractCegarLoop]: Abstraction has has 566 places, 460 transitions, 5333 flow [2021-11-23 12:26:29,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:29,694 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:26:29,694 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:29,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-23 12:26:29,694 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:26:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:29,695 INFO L85 PathProgramCache]: Analyzing trace with hash -822698879, now seen corresponding path program 14 times [2021-11-23 12:26:29,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:29,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452748644] [2021-11-23 12:26:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:29,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:30,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452748644] [2021-11-23 12:26:30,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452748644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:26:30,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:26:30,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:26:30,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536788897] [2021-11-23 12:26:30,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:26:30,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:26:30,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:30,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:26:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:26:30,353 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:26:30,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 460 transitions, 5333 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:30,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:26:30,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:26:30,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:26:40,393 INFO L129 PetriNetUnfolder]: 2071/6925 cut-off events. [2021-11-23 12:26:40,393 INFO L130 PetriNetUnfolder]: For 173524/173547 co-relation queries the response was YES. [2021-11-23 12:26:40,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42307 conditions, 6925 events. 2071/6925 cut-off events. For 173524/173547 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 64996 event pairs, 539 based on Foata normal form. 7/6812 useless extension candidates. Maximal degree in co-relation 42078. Up to 2457 conditions per place. [2021-11-23 12:26:40,749 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 605 selfloop transitions, 45 changer transitions 112/849 dead transitions. [2021-11-23 12:26:40,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 849 transitions, 12783 flow [2021-11-23 12:26:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-23 12:26:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-11-23 12:26:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 7022 transitions. [2021-11-23 12:26:40,754 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6435117302052786 [2021-11-23 12:26:40,754 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 7022 transitions. [2021-11-23 12:26:40,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 7022 transitions. [2021-11-23 12:26:40,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:26:40,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 7022 transitions. [2021-11-23 12:26:40,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 113.25806451612904) internal successors, (7022), 62 states have internal predecessors, (7022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:40,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:40,769 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 176.0) internal successors, (11088), 63 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:40,769 INFO L186 Difference]: Start difference. First operand has 566 places, 460 transitions, 5333 flow. Second operand 62 states and 7022 transitions. [2021-11-23 12:26:40,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 849 transitions, 12783 flow [2021-11-23 12:26:42,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 849 transitions, 12051 flow, removed 362 selfloop flow, removed 16 redundant places. [2021-11-23 12:26:42,216 INFO L242 Difference]: Finished difference. Result has 646 places, 462 transitions, 5088 flow [2021-11-23 12:26:42,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4797, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=5088, PETRI_PLACES=646, PETRI_TRANSITIONS=462} [2021-11-23 12:26:42,217 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 487 predicate places. [2021-11-23 12:26:42,217 INFO L470 AbstractCegarLoop]: Abstraction has has 646 places, 462 transitions, 5088 flow [2021-11-23 12:26:42,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:42,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:26:42,218 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:42,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-23 12:26:42,218 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:26:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1486202495, now seen corresponding path program 15 times [2021-11-23 12:26:42,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:42,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940073283] [2021-11-23 12:26:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:42,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:42,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:42,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940073283] [2021-11-23 12:26:42,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940073283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:26:42,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:26:42,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:26:42,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468987445] [2021-11-23 12:26:42,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:26:42,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:26:42,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:26:42,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:26:42,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:26:42,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 462 transitions, 5088 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:42,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:26:42,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:26:42,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:26:52,274 INFO L129 PetriNetUnfolder]: 2505/8387 cut-off events. [2021-11-23 12:26:52,275 INFO L130 PetriNetUnfolder]: For 236436/236459 co-relation queries the response was YES. [2021-11-23 12:26:52,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53209 conditions, 8387 events. 2505/8387 cut-off events. For 236436/236459 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 82323 event pairs, 896 based on Foata normal form. 5/8097 useless extension candidates. Maximal degree in co-relation 52945. Up to 2549 conditions per place. [2021-11-23 12:26:52,655 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 595 selfloop transitions, 49 changer transitions 48/779 dead transitions. [2021-11-23 12:26:52,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 779 transitions, 11921 flow [2021-11-23 12:26:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:26:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:26:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4089 transitions. [2021-11-23 12:26:52,658 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6637987012987013 [2021-11-23 12:26:52,659 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4089 transitions. [2021-11-23 12:26:52,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4089 transitions. [2021-11-23 12:26:52,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:26:52,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4089 transitions. [2021-11-23 12:26:52,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.82857142857142) internal successors, (4089), 35 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:52,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:52,667 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:52,667 INFO L186 Difference]: Start difference. First operand has 646 places, 462 transitions, 5088 flow. Second operand 35 states and 4089 transitions. [2021-11-23 12:26:52,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 779 transitions, 11921 flow [2021-11-23 12:26:54,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 779 transitions, 11537 flow, removed 134 selfloop flow, removed 53 redundant places. [2021-11-23 12:26:54,921 INFO L242 Difference]: Finished difference. Result has 610 places, 492 transitions, 5907 flow [2021-11-23 12:26:54,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5907, PETRI_PLACES=610, PETRI_TRANSITIONS=492} [2021-11-23 12:26:54,923 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 451 predicate places. [2021-11-23 12:26:54,923 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 492 transitions, 5907 flow [2021-11-23 12:26:54,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:54,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:26:54,924 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:26:54,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-23 12:26:54,925 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:26:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:26:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash -978790507, now seen corresponding path program 16 times [2021-11-23 12:26:54,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:26:54,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985632073] [2021-11-23 12:26:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:26:54,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:26:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:26:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:26:55,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:26:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985632073] [2021-11-23 12:26:55,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985632073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:26:55,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:26:55,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:26:55,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135941195] [2021-11-23 12:26:55,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:26:55,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:26:55,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:26:55,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:26:55,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:26:55,527 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:26:55,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 492 transitions, 5907 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:26:55,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:26:55,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:26:55,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:27:04,669 INFO L129 PetriNetUnfolder]: 2571/8695 cut-off events. [2021-11-23 12:27:04,670 INFO L130 PetriNetUnfolder]: For 257986/258009 co-relation queries the response was YES. [2021-11-23 12:27:04,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56002 conditions, 8695 events. 2571/8695 cut-off events. For 257986/258009 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 86351 event pairs, 658 based on Foata normal form. 7/8558 useless extension candidates. Maximal degree in co-relation 55752. Up to 3400 conditions per place. [2021-11-23 12:27:05,041 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 615 selfloop transitions, 66 changer transitions 38/806 dead transitions. [2021-11-23 12:27:05,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 806 transitions, 12732 flow [2021-11-23 12:27:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-23 12:27:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-23 12:27:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4257 transitions. [2021-11-23 12:27:05,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6537162162162162 [2021-11-23 12:27:05,045 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4257 transitions. [2021-11-23 12:27:05,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4257 transitions. [2021-11-23 12:27:05,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:27:05,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4257 transitions. [2021-11-23 12:27:05,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 115.05405405405405) internal successors, (4257), 37 states have internal predecessors, (4257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:05,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:05,054 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 176.0) internal successors, (6688), 38 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:05,054 INFO L186 Difference]: Start difference. First operand has 610 places, 492 transitions, 5907 flow. Second operand 37 states and 4257 transitions. [2021-11-23 12:27:05,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 806 transitions, 12732 flow [2021-11-23 12:27:07,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 806 transitions, 11974 flow, removed 361 selfloop flow, removed 17 redundant places. [2021-11-23 12:27:07,505 INFO L242 Difference]: Finished difference. Result has 641 places, 517 transitions, 6355 flow [2021-11-23 12:27:07,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5321, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6355, PETRI_PLACES=641, PETRI_TRANSITIONS=517} [2021-11-23 12:27:07,506 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 482 predicate places. [2021-11-23 12:27:07,506 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 517 transitions, 6355 flow [2021-11-23 12:27:07,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:07,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:27:07,507 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:27:07,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-23 12:27:07,507 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:27:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:27:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1194428631, now seen corresponding path program 17 times [2021-11-23 12:27:07,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:27:07,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897765479] [2021-11-23 12:27:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:27:07,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:27:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:27:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:27:08,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:27:08,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897765479] [2021-11-23 12:27:08,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897765479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:27:08,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:27:08,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:27:08,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493416377] [2021-11-23 12:27:08,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:27:08,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:27:08,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:27:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:27:08,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:27:08,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:27:08,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 517 transitions, 6355 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:08,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:27:08,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:27:08,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 12:27:18,453 INFO L129 PetriNetUnfolder]: 2848/9274 cut-off events. [2021-11-23 12:27:18,453 INFO L130 PetriNetUnfolder]: For 302853/302879 co-relation queries the response was YES. [2021-11-23 12:27:18,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63352 conditions, 9274 events. 2848/9274 cut-off events. For 302853/302879 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 92244 event pairs, 1715 based on Foata normal form. 5/9002 useless extension candidates. Maximal degree in co-relation 63090. Up to 2579 conditions per place. [2021-11-23 12:27:18,922 INFO L132 encePairwiseOnDemand]: 145/176 looper letters, 645 selfloop transitions, 43 changer transitions 44/819 dead transitions. [2021-11-23 12:27:18,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 819 transitions, 13280 flow [2021-11-23 12:27:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 12:27:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-23 12:27:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4092 transitions. [2021-11-23 12:27:18,925 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2021-11-23 12:27:18,925 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4092 transitions. [2021-11-23 12:27:18,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4092 transitions. [2021-11-23 12:27:18,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 12:27:18,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4092 transitions. [2021-11-23 12:27:18,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 116.91428571428571) internal successors, (4092), 35 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:18,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:18,934 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 176.0) internal successors, (6336), 36 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:18,934 INFO L186 Difference]: Start difference. First operand has 641 places, 517 transitions, 6355 flow. Second operand 35 states and 4092 transitions. [2021-11-23 12:27:18,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 819 transitions, 13280 flow [2021-11-23 12:27:22,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 819 transitions, 12697 flow, removed 242 selfloop flow, removed 22 redundant places. [2021-11-23 12:27:22,187 INFO L242 Difference]: Finished difference. Result has 668 places, 547 transitions, 6931 flow [2021-11-23 12:27:22,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6931, PETRI_PLACES=668, PETRI_TRANSITIONS=547} [2021-11-23 12:27:22,189 INFO L334 CegarLoopForPetriNet]: 159 programPoint places, 509 predicate places. [2021-11-23 12:27:22,189 INFO L470 AbstractCegarLoop]: Abstraction has has 668 places, 547 transitions, 6931 flow [2021-11-23 12:27:22,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:22,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 12:27:22,190 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:27:22,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-23 12:27:22,191 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-23 12:27:22,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:27:22,191 INFO L85 PathProgramCache]: Analyzing trace with hash 298829681, now seen corresponding path program 18 times [2021-11-23 12:27:22,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:27:22,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879124464] [2021-11-23 12:27:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:27:22,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:27:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:27:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:27:22,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:27:22,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879124464] [2021-11-23 12:27:22,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879124464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:27:22,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:27:22,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-23 12:27:22,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150330967] [2021-11-23 12:27:22,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:27:22,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-23 12:27:22,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:27:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 12:27:22,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:27:22,949 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 176 [2021-11-23 12:27:22,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 547 transitions, 6931 flow. Second operand has 26 states, 26 states have (on average 109.07692307692308) internal successors, (2836), 26 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:27:22,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 12:27:22,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 176 [2021-11-23 12:27:22,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand