./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3 --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 f5e490cdb414af150c1a875602a078da9d38c5d6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:16:36,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:16:36,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:16:36,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:16:36,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:16:36,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:16:36,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:16:36,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:16:36,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:16:36,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:16:36,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:16:36,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:16:36,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:16:36,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:16:36,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:16:36,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:16:36,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:16:36,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:16:36,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:16:36,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:16:36,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:16:36,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:16:36,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:16:36,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:16:36,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:16:36,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:16:36,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:16:36,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:16:36,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:16:36,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:16:36,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:16:36,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:16:36,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:16:36,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:16:36,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:16:36,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:16:36,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:16:36,816 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:16:36,816 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:16:36,817 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:16:36,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:16:36,819 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:16:36,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:16:36,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:16:36,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:16:36,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:16:36,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:16:36,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:16:36,871 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:16:36,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:16:36,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:16:36,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:16:36,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:16:36,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:16:36,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:16:36,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:16:36,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:16:36,881 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:16:36,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:16:36,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:16:36,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:16:36,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:16:36,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:16:36,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:16:36,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:36,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:16:36,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:16:36,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:16:36,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:16:36,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:16:36,885 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:16:36,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:16:36,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:16:36,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:16:36,887 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_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5e490cdb414af150c1a875602a078da9d38c5d6 [2021-10-15 20:16:37,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:16:37,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:16:37,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:16:37,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:16:37,158 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:16:37,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c [2021-10-15 20:16:37,219 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/data/a8fa8228c/0182a49cacd74b62ab9539864131969e/FLAGe12ceee9f [2021-10-15 20:16:37,817 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:16:37,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c [2021-10-15 20:16:37,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/data/a8fa8228c/0182a49cacd74b62ab9539864131969e/FLAGe12ceee9f [2021-10-15 20:16:38,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/data/a8fa8228c/0182a49cacd74b62ab9539864131969e [2021-10-15 20:16:38,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:16:38,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:16:38,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:38,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:16:38,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:16:38,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:38,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3695d840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38, skipping insertion in model container [2021-10-15 20:16:38,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:38,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:16:38,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:16:38,607 WARN L228 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_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c[48581,48594] [2021-10-15 20:16:38,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:38,629 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:16:38,745 WARN L228 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_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c[48581,48594] [2021-10-15 20:16:38,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:16:38,762 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:16:38,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38 WrapperNode [2021-10-15 20:16:38,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:16:38,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:38,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:16:38,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:16:38,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:38,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:38,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:16:38,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:16:38,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:16:38,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:16:38,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:38,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:38,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:38,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:38,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:39,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:39,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:39,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:16:39,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:16:39,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:16:39,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:16:39,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (1/1) ... [2021-10-15 20:16:39,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:16:39,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:16:39,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:16:39,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:16:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:16:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:16:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:16:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:16:39,510 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,530 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,534 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,541 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,543 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,544 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,550 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,556 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,560 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,563 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,565 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,567 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,574 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,581 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,582 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,588 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,591 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,596 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,599 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,599 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,601 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,605 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,612 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,618 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,620 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,622 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,626 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,627 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,628 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:39,631 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 20:16:40,818 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##658: assume !false; [2021-10-15 20:16:40,819 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##657: assume false; [2021-10-15 20:16:40,819 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##665: assume !false; [2021-10-15 20:16:40,819 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##664: assume false; [2021-10-15 20:16:40,819 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##683: assume false; [2021-10-15 20:16:40,819 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##684: assume !false; [2021-10-15 20:16:40,820 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##609: assume false; [2021-10-15 20:16:40,820 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##610: assume !false; [2021-10-15 20:16:40,820 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##639: assume false; [2021-10-15 20:16:40,820 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##640: assume !false; [2021-10-15 20:16:40,820 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##249: assume false; [2021-10-15 20:16:40,820 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##250: assume !false; [2021-10-15 20:16:40,821 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##279: assume false; [2021-10-15 20:16:40,821 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##280: assume !false; [2021-10-15 20:16:40,821 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume !false; [2021-10-15 20:16:40,821 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##284: assume false; [2021-10-15 20:16:40,821 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##229: assume !false; [2021-10-15 20:16:40,821 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume false; [2021-10-15 20:16:40,822 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##302: assume !false; [2021-10-15 20:16:40,822 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume false; [2021-10-15 20:16:40,822 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##369: assume !false; [2021-10-15 20:16:40,822 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##375: assume !false; [2021-10-15 20:16:40,822 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume false; [2021-10-15 20:16:40,823 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-10-15 20:16:40,823 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-10-15 20:16:40,823 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##357: assume false; [2021-10-15 20:16:40,823 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##358: assume !false; [2021-10-15 20:16:40,823 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##368: assume false; [2021-10-15 20:16:40,823 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##404: assume !false; [2021-10-15 20:16:40,824 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##403: assume false; [2021-10-15 20:16:40,824 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##427: assume !false; [2021-10-15 20:16:40,824 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##426: assume false; [2021-10-15 20:16:40,824 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##436: assume !false; [2021-10-15 20:16:40,824 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##435: assume false; [2021-10-15 20:16:40,825 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##439: assume false; [2021-10-15 20:16:40,825 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##440: assume !false; [2021-10-15 20:16:40,825 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##463: assume false; [2021-10-15 20:16:40,825 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##464: assume !false; [2021-10-15 20:16:40,825 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##485: assume !false; [2021-10-15 20:16:40,825 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##484: assume false; [2021-10-15 20:16:40,826 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##524: assume !false; [2021-10-15 20:16:40,826 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##523: assume false; [2021-10-15 20:16:40,826 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##558: assume !false; [2021-10-15 20:16:40,826 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##557: assume false; [2021-10-15 20:16:40,826 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##187: assume !false; [2021-10-15 20:16:40,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##186: assume false; [2021-10-15 20:16:40,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##68: assume !false; [2021-10-15 20:16:40,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume false; [2021-10-15 20:16:40,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##144: assume false; [2021-10-15 20:16:40,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##145: assume !false; [2021-10-15 20:16:40,827 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-10-15 20:16:40,828 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-10-15 20:16:40,828 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##154: assume !false; [2021-10-15 20:16:40,828 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume false; [2021-10-15 20:16:40,828 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##158: assume !false; [2021-10-15 20:16:40,828 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume false; [2021-10-15 20:16:40,828 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##588: assume !false; [2021-10-15 20:16:40,829 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##587: assume false; [2021-10-15 20:16:40,829 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume !false; [2021-10-15 20:16:40,829 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume false; [2021-10-15 20:16:40,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:16:40,842 INFO L299 CfgBuilder]: Removed 277 assume(true) statements. [2021-10-15 20:16:40,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:40 BoogieIcfgContainer [2021-10-15 20:16:40,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:16:40,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:16:40,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:16:40,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:16:40,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:16:38" (1/3) ... [2021-10-15 20:16:40,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bfc120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:40, skipping insertion in model container [2021-10-15 20:16:40,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:16:38" (2/3) ... [2021-10-15 20:16:40,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bfc120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:16:40, skipping insertion in model container [2021-10-15 20:16:40,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:40" (3/3) ... [2021-10-15 20:16:40,853 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2021-10-15 20:16:40,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:16:40,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-10-15 20:16:40,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:16:40,913 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, mConcurrency=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 [2021-10-15 20:16:40,914 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-10-15 20:16:40,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 572 places, 829 transitions, 1658 flow [2021-10-15 20:16:41,092 INFO L129 PetriNetUnfolder]: 258/829 cut-off events. [2021-10-15 20:16:41,092 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:41,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 829 events. 258/829 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4318 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-10-15 20:16:41,102 INFO L82 GeneralOperation]: Start removeDead. Operand has 572 places, 829 transitions, 1658 flow [2021-10-15 20:16:41,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 567 places, 812 transitions, 1624 flow [2021-10-15 20:16:41,123 INFO L129 PetriNetUnfolder]: 6/34 cut-off events. [2021-10-15 20:16:41,123 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:41,123 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:41,124 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:41,125 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:41,130 INFO L82 PathProgramCache]: Analyzing trace with hash 538056098, now seen corresponding path program 1 times [2021-10-15 20:16:41,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:41,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961418527] [2021-10-15 20:16:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:41,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:41,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:41,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961418527] [2021-10-15 20:16:41,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961418527] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:41,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:41,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:41,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352027921] [2021-10-15 20:16:41,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:41,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:41,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:41,431 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:41,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 812 transitions, 1624 flow. Second operand has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:41,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:41,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:41,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:41,924 INFO L129 PetriNetUnfolder]: 239/931 cut-off events. [2021-10-15 20:16:41,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:41,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 931 events. 239/931 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5328 event pairs, 0 based on Foata normal form. 37/702 useless extension candidates. Maximal degree in co-relation 198. Up to 147 conditions per place. [2021-10-15 20:16:41,942 INFO L132 encePairwiseOnDemand]: 727/829 looper letters, 159 selfloop transitions, 43 changer transitions 0/756 dead transitions. [2021-10-15 20:16:41,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 756 transitions, 1916 flow [2021-10-15 20:16:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2015 transitions. [2021-10-15 20:16:41,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8102131081624447 [2021-10-15 20:16:41,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2015 transitions. [2021-10-15 20:16:41,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2015 transitions. [2021-10-15 20:16:41,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:41,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2015 transitions. [2021-10-15 20:16:41,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 671.6666666666666) internal successors, (2015), 3 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,013 INFO L186 Difference]: Start difference. First operand has 567 places, 812 transitions, 1624 flow. Second operand 3 states and 2015 transitions. [2021-10-15 20:16:42,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 756 transitions, 1916 flow [2021-10-15 20:16:42,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 756 transitions, 1916 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:16:42,051 INFO L242 Difference]: Finished difference. Result has 533 places, 734 transitions, 1678 flow [2021-10-15 20:16:42,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1678, PETRI_PLACES=533, PETRI_TRANSITIONS=734} [2021-10-15 20:16:42,055 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -34 predicate places. [2021-10-15 20:16:42,055 INFO L470 AbstractCegarLoop]: Abstraction has has 533 places, 734 transitions, 1678 flow [2021-10-15 20:16:42,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,057 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:42,058 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:42,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:16:42,058 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:42,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:42,059 INFO L82 PathProgramCache]: Analyzing trace with hash 370233074, now seen corresponding path program 1 times [2021-10-15 20:16:42,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:42,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164336011] [2021-10-15 20:16:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:42,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:42,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:42,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164336011] [2021-10-15 20:16:42,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164336011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:42,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:42,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:42,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510966771] [2021-10-15 20:16:42,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:42,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:42,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 829 [2021-10-15 20:16:42,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 734 transitions, 1678 flow. Second operand has 3 states, 3 states have (on average 756.3333333333334) internal successors, (2269), 3 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:42,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 829 [2021-10-15 20:16:42,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:42,258 INFO L129 PetriNetUnfolder]: 238/930 cut-off events. [2021-10-15 20:16:42,258 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-10-15 20:16:42,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 930 events. 238/930 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5410 event pairs, 0 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 966. Up to 38 conditions per place. [2021-10-15 20:16:42,265 INFO L132 encePairwiseOnDemand]: 823/829 looper letters, 6 selfloop transitions, 5 changer transitions 0/733 dead transitions. [2021-10-15 20:16:42,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 733 transitions, 1698 flow [2021-10-15 20:16:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2277 transitions. [2021-10-15 20:16:42,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9155609167671894 [2021-10-15 20:16:42,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2277 transitions. [2021-10-15 20:16:42,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2277 transitions. [2021-10-15 20:16:42,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:42,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2277 transitions. [2021-10-15 20:16:42,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 759.0) internal successors, (2277), 3 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,297 INFO L186 Difference]: Start difference. First operand has 533 places, 734 transitions, 1678 flow. Second operand 3 states and 2277 transitions. [2021-10-15 20:16:42,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 733 transitions, 1698 flow [2021-10-15 20:16:42,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 733 transitions, 1612 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:42,342 INFO L242 Difference]: Finished difference. Result has 533 places, 733 transitions, 1600 flow [2021-10-15 20:16:42,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1600, PETRI_PLACES=533, PETRI_TRANSITIONS=733} [2021-10-15 20:16:42,344 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -34 predicate places. [2021-10-15 20:16:42,345 INFO L470 AbstractCegarLoop]: Abstraction has has 533 places, 733 transitions, 1600 flow [2021-10-15 20:16:42,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 756.3333333333334) internal successors, (2269), 3 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:42,347 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:42,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 20:16:42,348 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:42,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:42,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1535696421, now seen corresponding path program 1 times [2021-10-15 20:16:42,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:42,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281099042] [2021-10-15 20:16:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:42,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:42,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:42,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281099042] [2021-10-15 20:16:42,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281099042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:42,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:42,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:42,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385515038] [2021-10-15 20:16:42,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:42,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:42,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:42,482 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 757 out of 829 [2021-10-15 20:16:42,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 733 transitions, 1600 flow. Second operand has 3 states, 3 states have (on average 758.6666666666666) internal successors, (2276), 3 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:42,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 757 of 829 [2021-10-15 20:16:42,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:42,578 INFO L129 PetriNetUnfolder]: 256/1033 cut-off events. [2021-10-15 20:16:42,578 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:42,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 1033 events. 256/1033 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6380 event pairs, 0 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 1004. Up to 41 conditions per place. [2021-10-15 20:16:42,584 INFO L132 encePairwiseOnDemand]: 819/829 looper letters, 12 selfloop transitions, 4 changer transitions 0/730 dead transitions. [2021-10-15 20:16:42,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 730 transitions, 1626 flow [2021-10-15 20:16:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2293 transitions. [2021-10-15 20:16:42,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9219943707277845 [2021-10-15 20:16:42,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2293 transitions. [2021-10-15 20:16:42,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2293 transitions. [2021-10-15 20:16:42,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:42,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2293 transitions. [2021-10-15 20:16:42,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 764.3333333333334) internal successors, (2293), 3 states have internal predecessors, (2293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,617 INFO L186 Difference]: Start difference. First operand has 533 places, 733 transitions, 1600 flow. Second operand 3 states and 2293 transitions. [2021-10-15 20:16:42,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 730 transitions, 1626 flow [2021-10-15 20:16:42,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 730 transitions, 1616 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:42,638 INFO L242 Difference]: Finished difference. Result has 528 places, 727 transitions, 1596 flow [2021-10-15 20:16:42,640 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1596, PETRI_PLACES=528, PETRI_TRANSITIONS=727} [2021-10-15 20:16:42,640 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -39 predicate places. [2021-10-15 20:16:42,640 INFO L470 AbstractCegarLoop]: Abstraction has has 528 places, 727 transitions, 1596 flow [2021-10-15 20:16:42,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 758.6666666666666) internal successors, (2276), 3 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,642 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:42,643 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:42,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 20:16:42,644 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:42,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:42,645 INFO L82 PathProgramCache]: Analyzing trace with hash 98463890, now seen corresponding path program 1 times [2021-10-15 20:16:42,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:42,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840471686] [2021-10-15 20:16:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:42,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:42,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:42,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840471686] [2021-10-15 20:16:42,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840471686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:42,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:42,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:42,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205130054] [2021-10-15 20:16:42,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:42,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:42,759 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 743 out of 829 [2021-10-15 20:16:42,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 727 transitions, 1596 flow. Second operand has 3 states, 3 states have (on average 744.6666666666666) internal successors, (2234), 3 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:42,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 743 of 829 [2021-10-15 20:16:42,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:42,878 INFO L129 PetriNetUnfolder]: 303/1228 cut-off events. [2021-10-15 20:16:42,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:16:42,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 1228 events. 303/1228 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7746 event pairs, 0 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1208. Up to 52 conditions per place. [2021-10-15 20:16:42,887 INFO L132 encePairwiseOnDemand]: 812/829 looper letters, 15 selfloop transitions, 6 changer transitions 0/660 dead transitions. [2021-10-15 20:16:42,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 660 transitions, 1504 flow [2021-10-15 20:16:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2261 transitions. [2021-10-15 20:16:42,895 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9091274628065943 [2021-10-15 20:16:42,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2261 transitions. [2021-10-15 20:16:42,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2261 transitions. [2021-10-15 20:16:42,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:42,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2261 transitions. [2021-10-15 20:16:42,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 753.6666666666666) internal successors, (2261), 3 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,914 INFO L186 Difference]: Start difference. First operand has 528 places, 727 transitions, 1596 flow. Second operand 3 states and 2261 transitions. [2021-10-15 20:16:42,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 660 transitions, 1504 flow [2021-10-15 20:16:42,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 660 transitions, 1496 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:42,932 INFO L242 Difference]: Finished difference. Result has 478 places, 660 transitions, 1482 flow [2021-10-15 20:16:42,933 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1482, PETRI_PLACES=478, PETRI_TRANSITIONS=660} [2021-10-15 20:16:42,933 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -89 predicate places. [2021-10-15 20:16:42,933 INFO L470 AbstractCegarLoop]: Abstraction has has 478 places, 660 transitions, 1482 flow [2021-10-15 20:16:42,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 744.6666666666666) internal successors, (2234), 3 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:42,935 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:42,936 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:42,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 20:16:42,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:42,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:42,937 INFO L82 PathProgramCache]: Analyzing trace with hash 107438083, now seen corresponding path program 1 times [2021-10-15 20:16:42,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:42,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549117649] [2021-10-15 20:16:42,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:42,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:42,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:42,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549117649] [2021-10-15 20:16:42,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549117649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:43,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:43,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:43,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868912227] [2021-10-15 20:16:43,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:43,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:43,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:43,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:43,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 660 transitions, 1482 flow. Second operand has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:43,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:43,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:43,298 INFO L129 PetriNetUnfolder]: 311/1270 cut-off events. [2021-10-15 20:16:43,298 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2021-10-15 20:16:43,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1681 conditions, 1270 events. 311/1270 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8122 event pairs, 0 based on Foata normal form. 0/963 useless extension candidates. Maximal degree in co-relation 871. Up to 237 conditions per place. [2021-10-15 20:16:43,306 INFO L132 encePairwiseOnDemand]: 814/829 looper letters, 158 selfloop transitions, 15 changer transitions 0/669 dead transitions. [2021-10-15 20:16:43,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 669 transitions, 1848 flow [2021-10-15 20:16:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:43,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1912 transitions. [2021-10-15 20:16:43,314 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7687977482911138 [2021-10-15 20:16:43,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1912 transitions. [2021-10-15 20:16:43,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1912 transitions. [2021-10-15 20:16:43,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:43,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1912 transitions. [2021-10-15 20:16:43,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,334 INFO L186 Difference]: Start difference. First operand has 478 places, 660 transitions, 1482 flow. Second operand 3 states and 1912 transitions. [2021-10-15 20:16:43,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 669 transitions, 1848 flow [2021-10-15 20:16:43,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 669 transitions, 1836 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:43,352 INFO L242 Difference]: Finished difference. Result has 480 places, 662 transitions, 1542 flow [2021-10-15 20:16:43,353 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1542, PETRI_PLACES=480, PETRI_TRANSITIONS=662} [2021-10-15 20:16:43,354 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -87 predicate places. [2021-10-15 20:16:43,354 INFO L470 AbstractCegarLoop]: Abstraction has has 480 places, 662 transitions, 1542 flow [2021-10-15 20:16:43,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,374 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:43,375 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] [2021-10-15 20:16:43,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 20:16:43,375 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:43,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:43,376 INFO L82 PathProgramCache]: Analyzing trace with hash -946806949, now seen corresponding path program 1 times [2021-10-15 20:16:43,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:43,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733601340] [2021-10-15 20:16:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:43,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:43,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:43,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733601340] [2021-10-15 20:16:43,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733601340] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:43,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:43,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:43,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261375254] [2021-10-15 20:16:43,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:43,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:43,470 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:43,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 662 transitions, 1542 flow. Second operand has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:43,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:43,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:43,770 INFO L129 PetriNetUnfolder]: 308/1267 cut-off events. [2021-10-15 20:16:43,771 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-10-15 20:16:43,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 1267 events. 308/1267 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8131 event pairs, 0 based on Foata normal form. 0/973 useless extension candidates. Maximal degree in co-relation 1480. Up to 236 conditions per place. [2021-10-15 20:16:43,779 INFO L132 encePairwiseOnDemand]: 816/829 looper letters, 158 selfloop transitions, 14 changer transitions 0/668 dead transitions. [2021-10-15 20:16:43,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 668 transitions, 1900 flow [2021-10-15 20:16:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2493 transitions. [2021-10-15 20:16:43,789 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7518094089264173 [2021-10-15 20:16:43,789 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2493 transitions. [2021-10-15 20:16:43,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2493 transitions. [2021-10-15 20:16:43,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:43,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2493 transitions. [2021-10-15 20:16:43,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 623.25) internal successors, (2493), 4 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,811 INFO L186 Difference]: Start difference. First operand has 480 places, 662 transitions, 1542 flow. Second operand 4 states and 2493 transitions. [2021-10-15 20:16:43,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 668 transitions, 1900 flow [2021-10-15 20:16:43,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 668 transitions, 1870 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:43,832 INFO L242 Difference]: Finished difference. Result has 482 places, 662 transitions, 1555 flow [2021-10-15 20:16:43,833 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1555, PETRI_PLACES=482, PETRI_TRANSITIONS=662} [2021-10-15 20:16:43,834 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -85 predicate places. [2021-10-15 20:16:43,834 INFO L470 AbstractCegarLoop]: Abstraction has has 482 places, 662 transitions, 1555 flow [2021-10-15 20:16:43,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:43,836 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:43,836 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] [2021-10-15 20:16:43,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 20:16:43,837 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash 180793810, now seen corresponding path program 1 times [2021-10-15 20:16:43,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:43,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782857710] [2021-10-15 20:16:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:43,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:43,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:43,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782857710] [2021-10-15 20:16:43,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782857710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:43,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:43,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:43,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428281102] [2021-10-15 20:16:43,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:43,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:43,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:43,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:43,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:43,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 662 transitions, 1555 flow. Second operand has 4 states, 4 states have (on average 585.25) internal successors, (2341), 4 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) [2021-10-15 20:16:43,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:43,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:43,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:44,223 INFO L129 PetriNetUnfolder]: 305/1264 cut-off events. [2021-10-15 20:16:44,224 INFO L130 PetriNetUnfolder]: For 248/248 co-relation queries the response was YES. [2021-10-15 20:16:44,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1264 events. 305/1264 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8134 event pairs, 0 based on Foata normal form. 0/977 useless extension candidates. Maximal degree in co-relation 1484. Up to 236 conditions per place. [2021-10-15 20:16:44,231 INFO L132 encePairwiseOnDemand]: 816/829 looper letters, 157 selfloop transitions, 14 changer transitions 0/667 dead transitions. [2021-10-15 20:16:44,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 667 transitions, 1909 flow [2021-10-15 20:16:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2492 transitions. [2021-10-15 20:16:44,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7515078407720145 [2021-10-15 20:16:44,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2492 transitions. [2021-10-15 20:16:44,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2492 transitions. [2021-10-15 20:16:44,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:44,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2492 transitions. [2021-10-15 20:16:44,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,257 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,257 INFO L186 Difference]: Start difference. First operand has 482 places, 662 transitions, 1555 flow. Second operand 4 states and 2492 transitions. [2021-10-15 20:16:44,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 667 transitions, 1909 flow [2021-10-15 20:16:44,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 667 transitions, 1908 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:44,276 INFO L242 Difference]: Finished difference. Result has 485 places, 662 transitions, 1597 flow [2021-10-15 20:16:44,277 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1597, PETRI_PLACES=485, PETRI_TRANSITIONS=662} [2021-10-15 20:16:44,277 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -82 predicate places. [2021-10-15 20:16:44,278 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 662 transitions, 1597 flow [2021-10-15 20:16:44,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 585.25) internal successors, (2341), 4 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) [2021-10-15 20:16:44,279 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:44,279 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] [2021-10-15 20:16:44,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 20:16:44,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:44,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:44,280 INFO L82 PathProgramCache]: Analyzing trace with hash 945683314, now seen corresponding path program 1 times [2021-10-15 20:16:44,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:44,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627338477] [2021-10-15 20:16:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:44,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:44,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:44,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627338477] [2021-10-15 20:16:44,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627338477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:44,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:44,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:44,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347807284] [2021-10-15 20:16:44,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:44,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:44,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:44,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:44,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 751 out of 829 [2021-10-15 20:16:44,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 662 transitions, 1597 flow. Second operand has 4 states, 4 states have (on average 753.0) internal successors, (3012), 4 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) [2021-10-15 20:16:44,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:44,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 751 of 829 [2021-10-15 20:16:44,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:44,436 INFO L129 PetriNetUnfolder]: 304/1273 cut-off events. [2021-10-15 20:16:44,436 INFO L130 PetriNetUnfolder]: For 336/336 co-relation queries the response was YES. [2021-10-15 20:16:44,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1540 conditions, 1273 events. 304/1273 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8219 event pairs, 0 based on Foata normal form. 1/987 useless extension candidates. Maximal degree in co-relation 1276. Up to 53 conditions per place. [2021-10-15 20:16:44,444 INFO L132 encePairwiseOnDemand]: 823/829 looper letters, 6 selfloop transitions, 3 changer transitions 11/663 dead transitions. [2021-10-15 20:16:44,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 663 transitions, 1631 flow [2021-10-15 20:16:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3021 transitions. [2021-10-15 20:16:44,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.911037394451146 [2021-10-15 20:16:44,453 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3021 transitions. [2021-10-15 20:16:44,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3021 transitions. [2021-10-15 20:16:44,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:44,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3021 transitions. [2021-10-15 20:16:44,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 755.25) internal successors, (3021), 4 states have internal predecessors, (3021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,472 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,472 INFO L186 Difference]: Start difference. First operand has 485 places, 662 transitions, 1597 flow. Second operand 4 states and 3021 transitions. [2021-10-15 20:16:44,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 663 transitions, 1631 flow [2021-10-15 20:16:44,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 663 transitions, 1616 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:44,492 INFO L242 Difference]: Finished difference. Result has 487 places, 652 transitions, 1552 flow [2021-10-15 20:16:44,493 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1552, PETRI_PLACES=487, PETRI_TRANSITIONS=652} [2021-10-15 20:16:44,494 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -80 predicate places. [2021-10-15 20:16:44,494 INFO L470 AbstractCegarLoop]: Abstraction has has 487 places, 652 transitions, 1552 flow [2021-10-15 20:16:44,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 753.0) internal successors, (3012), 4 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) [2021-10-15 20:16:44,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:44,495 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:44,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 20:16:44,496 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:44,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2136813194, now seen corresponding path program 1 times [2021-10-15 20:16:44,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:44,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64138923] [2021-10-15 20:16:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:44,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:44,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:44,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64138923] [2021-10-15 20:16:44,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64138923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:44,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:44,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:44,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247373251] [2021-10-15 20:16:44,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:44,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:44,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:44,561 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:44,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 652 transitions, 1552 flow. Second operand has 3 states, 3 states have (on average 585.6666666666666) internal successors, (1757), 3 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:44,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:44,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:44,779 INFO L129 PetriNetUnfolder]: 303/1236 cut-off events. [2021-10-15 20:16:44,780 INFO L130 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2021-10-15 20:16:44,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 1236 events. 303/1236 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7893 event pairs, 0 based on Foata normal form. 0/964 useless extension candidates. Maximal degree in co-relation 1714. Up to 234 conditions per place. [2021-10-15 20:16:44,788 INFO L132 encePairwiseOnDemand]: 779/829 looper letters, 114 selfloop transitions, 42 changer transitions 0/636 dead transitions. [2021-10-15 20:16:44,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 636 transitions, 1832 flow [2021-10-15 20:16:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1899 transitions. [2021-10-15 20:16:44,794 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635705669481303 [2021-10-15 20:16:44,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1899 transitions. [2021-10-15 20:16:44,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1899 transitions. [2021-10-15 20:16:44,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:44,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1899 transitions. [2021-10-15 20:16:44,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 633.0) internal successors, (1899), 3 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,808 INFO L186 Difference]: Start difference. First operand has 487 places, 652 transitions, 1552 flow. Second operand 3 states and 1899 transitions. [2021-10-15 20:16:44,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 636 transitions, 1832 flow [2021-10-15 20:16:44,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 636 transitions, 1824 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-15 20:16:44,829 INFO L242 Difference]: Finished difference. Result has 461 places, 636 transitions, 1596 flow [2021-10-15 20:16:44,830 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1596, PETRI_PLACES=461, PETRI_TRANSITIONS=636} [2021-10-15 20:16:44,830 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -106 predicate places. [2021-10-15 20:16:44,831 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 636 transitions, 1596 flow [2021-10-15 20:16:44,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 585.6666666666666) internal successors, (1757), 3 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:44,832 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] [2021-10-15 20:16:44,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 20:16:44,833 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:44,833 INFO L82 PathProgramCache]: Analyzing trace with hash -691702651, now seen corresponding path program 1 times [2021-10-15 20:16:44,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:44,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863504229] [2021-10-15 20:16:44,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:44,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:44,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:44,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863504229] [2021-10-15 20:16:44,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863504229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:44,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:44,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:44,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601548855] [2021-10-15 20:16:44,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:44,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:44,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:44,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 754 out of 829 [2021-10-15 20:16:44,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 636 transitions, 1596 flow. Second operand has 3 states, 3 states have (on average 755.3333333333334) internal successors, (2266), 3 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:44,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:44,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 754 of 829 [2021-10-15 20:16:44,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:45,019 INFO L129 PetriNetUnfolder]: 355/1527 cut-off events. [2021-10-15 20:16:45,019 INFO L130 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2021-10-15 20:16:45,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 1527 events. 355/1527 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10609 event pairs, 0 based on Foata normal form. 0/1221 useless extension candidates. Maximal degree in co-relation 1572. Up to 58 conditions per place. [2021-10-15 20:16:45,029 INFO L132 encePairwiseOnDemand]: 826/829 looper letters, 18 selfloop transitions, 2 changer transitions 0/637 dead transitions. [2021-10-15 20:16:45,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 637 transitions, 1638 flow [2021-10-15 20:16:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2283 transitions. [2021-10-15 20:16:45,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9179734620024126 [2021-10-15 20:16:45,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2283 transitions. [2021-10-15 20:16:45,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2283 transitions. [2021-10-15 20:16:45,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:45,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2283 transitions. [2021-10-15 20:16:45,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,055 INFO L186 Difference]: Start difference. First operand has 461 places, 636 transitions, 1596 flow. Second operand 3 states and 2283 transitions. [2021-10-15 20:16:45,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 637 transitions, 1638 flow [2021-10-15 20:16:45,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 637 transitions, 1554 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:45,082 INFO L242 Difference]: Finished difference. Result has 463 places, 637 transitions, 1526 flow [2021-10-15 20:16:45,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1526, PETRI_PLACES=463, PETRI_TRANSITIONS=637} [2021-10-15 20:16:45,085 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -104 predicate places. [2021-10-15 20:16:45,085 INFO L470 AbstractCegarLoop]: Abstraction has has 463 places, 637 transitions, 1526 flow [2021-10-15 20:16:45,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 755.3333333333334) internal successors, (2266), 3 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,086 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:45,086 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] [2021-10-15 20:16:45,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 20:16:45,087 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:45,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:45,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1371761021, now seen corresponding path program 1 times [2021-10-15 20:16:45,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:45,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814246674] [2021-10-15 20:16:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:45,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:45,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:45,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814246674] [2021-10-15 20:16:45,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814246674] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:45,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:45,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:45,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063213762] [2021-10-15 20:16:45,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:45,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:45,160 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 758 out of 829 [2021-10-15 20:16:45,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 637 transitions, 1526 flow. Second operand has 4 states, 4 states have (on average 759.25) internal successors, (3037), 4 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:45,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 758 of 829 [2021-10-15 20:16:45,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:45,322 INFO L129 PetriNetUnfolder]: 355/1650 cut-off events. [2021-10-15 20:16:45,322 INFO L130 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2021-10-15 20:16:45,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 1650 events. 355/1650 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12083 event pairs, 0 based on Foata normal form. 0/1338 useless extension candidates. Maximal degree in co-relation 1586. Up to 66 conditions per place. [2021-10-15 20:16:45,334 INFO L132 encePairwiseOnDemand]: 822/829 looper letters, 12 selfloop transitions, 6 changer transitions 0/640 dead transitions. [2021-10-15 20:16:45,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 640 transitions, 1568 flow [2021-10-15 20:16:45,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:16:45,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:16:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3809 transitions. [2021-10-15 20:16:45,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9189384800965018 [2021-10-15 20:16:45,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3809 transitions. [2021-10-15 20:16:45,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3809 transitions. [2021-10-15 20:16:45,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:45,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3809 transitions. [2021-10-15 20:16:45,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 761.8) internal successors, (3809), 5 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:45,376 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:45,376 INFO L186 Difference]: Start difference. First operand has 463 places, 637 transitions, 1526 flow. Second operand 5 states and 3809 transitions. [2021-10-15 20:16:45,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 640 transitions, 1568 flow [2021-10-15 20:16:45,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 640 transitions, 1566 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:45,402 INFO L242 Difference]: Finished difference. Result has 469 places, 639 transitions, 1557 flow [2021-10-15 20:16:45,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1557, PETRI_PLACES=469, PETRI_TRANSITIONS=639} [2021-10-15 20:16:45,404 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -98 predicate places. [2021-10-15 20:16:45,404 INFO L470 AbstractCegarLoop]: Abstraction has has 469 places, 639 transitions, 1557 flow [2021-10-15 20:16:45,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 759.25) internal successors, (3037), 4 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,407 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:45,407 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] [2021-10-15 20:16:45,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 20:16:45,407 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:45,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:45,408 INFO L82 PathProgramCache]: Analyzing trace with hash 458344375, now seen corresponding path program 1 times [2021-10-15 20:16:45,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:45,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615892495] [2021-10-15 20:16:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:45,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:45,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:45,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615892495] [2021-10-15 20:16:45,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615892495] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:45,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:45,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:45,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905224117] [2021-10-15 20:16:45,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:45,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:45,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:45,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:45,472 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 749 out of 829 [2021-10-15 20:16:45,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 639 transitions, 1557 flow. Second operand has 4 states, 4 states have (on average 751.0) internal successors, (3004), 4 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:45,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 749 of 829 [2021-10-15 20:16:45,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:45,617 INFO L129 PetriNetUnfolder]: 354/1660 cut-off events. [2021-10-15 20:16:45,617 INFO L130 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2021-10-15 20:16:45,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 1660 events. 354/1660 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12224 event pairs, 0 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 1831. Up to 95 conditions per place. [2021-10-15 20:16:45,628 INFO L132 encePairwiseOnDemand]: 826/829 looper letters, 14 selfloop transitions, 0 changer transitions 5/641 dead transitions. [2021-10-15 20:16:45,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 641 transitions, 1595 flow [2021-10-15 20:16:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:45,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3014 transitions. [2021-10-15 20:16:45,638 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9089264173703256 [2021-10-15 20:16:45,638 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3014 transitions. [2021-10-15 20:16:45,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3014 transitions. [2021-10-15 20:16:45,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:45,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3014 transitions. [2021-10-15 20:16:45,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 753.5) internal successors, (3014), 4 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,658 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,658 INFO L186 Difference]: Start difference. First operand has 469 places, 639 transitions, 1557 flow. Second operand 4 states and 3014 transitions. [2021-10-15 20:16:45,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 641 transitions, 1595 flow [2021-10-15 20:16:45,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 641 transitions, 1595 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:16:45,679 INFO L242 Difference]: Finished difference. Result has 474 places, 636 transitions, 1546 flow [2021-10-15 20:16:45,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1546, PETRI_PLACES=474, PETRI_TRANSITIONS=636} [2021-10-15 20:16:45,681 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -93 predicate places. [2021-10-15 20:16:45,681 INFO L470 AbstractCegarLoop]: Abstraction has has 474 places, 636 transitions, 1546 flow [2021-10-15 20:16:45,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 751.0) internal successors, (3004), 4 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:45,683 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] [2021-10-15 20:16:45,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 20:16:45,683 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:45,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2044140679, now seen corresponding path program 1 times [2021-10-15 20:16:45,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:45,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802957140] [2021-10-15 20:16:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:45,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:45,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:45,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802957140] [2021-10-15 20:16:45,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802957140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:45,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:45,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:45,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550927058] [2021-10-15 20:16:45,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:45,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:45,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:45,757 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 749 out of 829 [2021-10-15 20:16:45,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 636 transitions, 1546 flow. Second operand has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:45,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 749 of 829 [2021-10-15 20:16:45,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:45,899 INFO L129 PetriNetUnfolder]: 353/1663 cut-off events. [2021-10-15 20:16:45,900 INFO L130 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2021-10-15 20:16:45,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 1663 events. 353/1663 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12300 event pairs, 0 based on Foata normal form. 0/1363 useless extension candidates. Maximal degree in co-relation 2091. Up to 68 conditions per place. [2021-10-15 20:16:45,911 INFO L132 encePairwiseOnDemand]: 815/829 looper letters, 14 selfloop transitions, 13 changer transitions 0/639 dead transitions. [2021-10-15 20:16:45,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 639 transitions, 1606 flow [2021-10-15 20:16:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3024 transitions. [2021-10-15 20:16:45,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9119420989143546 [2021-10-15 20:16:45,920 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3024 transitions. [2021-10-15 20:16:45,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3024 transitions. [2021-10-15 20:16:45,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:45,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3024 transitions. [2021-10-15 20:16:45,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 756.0) internal successors, (3024), 4 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,941 INFO L186 Difference]: Start difference. First operand has 474 places, 636 transitions, 1546 flow. Second operand 4 states and 3024 transitions. [2021-10-15 20:16:45,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 639 transitions, 1606 flow [2021-10-15 20:16:45,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 639 transitions, 1602 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:45,963 INFO L242 Difference]: Finished difference. Result has 473 places, 637 transitions, 1588 flow [2021-10-15 20:16:45,965 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1588, PETRI_PLACES=473, PETRI_TRANSITIONS=637} [2021-10-15 20:16:45,965 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -94 predicate places. [2021-10-15 20:16:45,965 INFO L470 AbstractCegarLoop]: Abstraction has has 473 places, 637 transitions, 1588 flow [2021-10-15 20:16:45,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:45,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:45,967 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] [2021-10-15 20:16:45,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-15 20:16:45,967 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:45,968 INFO L82 PathProgramCache]: Analyzing trace with hash -610986493, now seen corresponding path program 1 times [2021-10-15 20:16:45,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:45,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943597221] [2021-10-15 20:16:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:45,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:46,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:46,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943597221] [2021-10-15 20:16:46,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943597221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:46,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:46,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:46,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964017132] [2021-10-15 20:16:46,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:46,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:46,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:46,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 757 out of 829 [2021-10-15 20:16:46,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 637 transitions, 1588 flow. Second operand has 3 states, 3 states have (on average 759.3333333333334) internal successors, (2278), 3 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:46,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 757 of 829 [2021-10-15 20:16:46,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:46,160 INFO L129 PetriNetUnfolder]: 335/1571 cut-off events. [2021-10-15 20:16:46,160 INFO L130 PetriNetUnfolder]: For 308/308 co-relation queries the response was YES. [2021-10-15 20:16:46,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 1571 events. 335/1571 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11458 event pairs, 0 based on Foata normal form. 18/1294 useless extension candidates. Maximal degree in co-relation 1980. Up to 62 conditions per place. [2021-10-15 20:16:46,171 INFO L132 encePairwiseOnDemand]: 823/829 looper letters, 10 selfloop transitions, 2 changer transitions 3/637 dead transitions. [2021-10-15 20:16:46,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 637 transitions, 1614 flow [2021-10-15 20:16:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2287 transitions. [2021-10-15 20:16:46,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9195818254925613 [2021-10-15 20:16:46,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2287 transitions. [2021-10-15 20:16:46,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2287 transitions. [2021-10-15 20:16:46,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:46,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2287 transitions. [2021-10-15 20:16:46,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 762.3333333333334) internal successors, (2287), 3 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,193 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,194 INFO L186 Difference]: Start difference. First operand has 473 places, 637 transitions, 1588 flow. Second operand 3 states and 2287 transitions. [2021-10-15 20:16:46,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 637 transitions, 1614 flow [2021-10-15 20:16:46,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 637 transitions, 1602 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:46,216 INFO L242 Difference]: Finished difference. Result has 475 places, 634 transitions, 1581 flow [2021-10-15 20:16:46,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1581, PETRI_PLACES=475, PETRI_TRANSITIONS=634} [2021-10-15 20:16:46,218 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -92 predicate places. [2021-10-15 20:16:46,218 INFO L470 AbstractCegarLoop]: Abstraction has has 475 places, 634 transitions, 1581 flow [2021-10-15 20:16:46,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 759.3333333333334) internal successors, (2278), 3 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:46,219 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] [2021-10-15 20:16:46,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-15 20:16:46,220 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:46,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1636712997, now seen corresponding path program 1 times [2021-10-15 20:16:46,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:46,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522807982] [2021-10-15 20:16:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:46,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:46,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:46,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522807982] [2021-10-15 20:16:46,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522807982] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:46,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:46,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:46,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690668792] [2021-10-15 20:16:46,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:46,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:46,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:46,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:46,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 749 out of 829 [2021-10-15 20:16:46,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 634 transitions, 1581 flow. Second operand has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:46,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 749 of 829 [2021-10-15 20:16:46,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:46,416 INFO L129 PetriNetUnfolder]: 333/1582 cut-off events. [2021-10-15 20:16:46,416 INFO L130 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2021-10-15 20:16:46,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 1582 events. 333/1582 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11655 event pairs, 0 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 2021. Up to 63 conditions per place. [2021-10-15 20:16:46,426 INFO L132 encePairwiseOnDemand]: 823/829 looper letters, 23 selfloop transitions, 5 changer transitions 0/637 dead transitions. [2021-10-15 20:16:46,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 637 transitions, 1645 flow [2021-10-15 20:16:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3024 transitions. [2021-10-15 20:16:46,435 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9119420989143546 [2021-10-15 20:16:46,436 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3024 transitions. [2021-10-15 20:16:46,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3024 transitions. [2021-10-15 20:16:46,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:46,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3024 transitions. [2021-10-15 20:16:46,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 756.0) internal successors, (3024), 4 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,452 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,452 INFO L186 Difference]: Start difference. First operand has 475 places, 634 transitions, 1581 flow. Second operand 4 states and 3024 transitions. [2021-10-15 20:16:46,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 637 transitions, 1645 flow [2021-10-15 20:16:46,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 637 transitions, 1643 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:46,475 INFO L242 Difference]: Finished difference. Result has 477 places, 635 transitions, 1603 flow [2021-10-15 20:16:46,476 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1603, PETRI_PLACES=477, PETRI_TRANSITIONS=635} [2021-10-15 20:16:46,477 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -90 predicate places. [2021-10-15 20:16:46,477 INFO L470 AbstractCegarLoop]: Abstraction has has 477 places, 635 transitions, 1603 flow [2021-10-15 20:16:46,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 750.25) internal successors, (3001), 4 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:46,479 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] [2021-10-15 20:16:46,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-15 20:16:46,479 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:46,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1706944907, now seen corresponding path program 1 times [2021-10-15 20:16:46,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:46,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570243575] [2021-10-15 20:16:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:46,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:46,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:46,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570243575] [2021-10-15 20:16:46,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570243575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:46,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:46,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:46,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732096239] [2021-10-15 20:16:46,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:46,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:46,557 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 751 out of 829 [2021-10-15 20:16:46,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 635 transitions, 1603 flow. Second operand has 4 states, 4 states have (on average 753.0) internal successors, (3012), 4 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) [2021-10-15 20:16:46,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:46,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 751 of 829 [2021-10-15 20:16:46,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:46,697 INFO L129 PetriNetUnfolder]: 332/1592 cut-off events. [2021-10-15 20:16:46,698 INFO L130 PetriNetUnfolder]: For 298/298 co-relation queries the response was YES. [2021-10-15 20:16:46,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 1592 events. 332/1592 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11788 event pairs, 0 based on Foata normal form. 1/1300 useless extension candidates. Maximal degree in co-relation 2100. Up to 93 conditions per place. [2021-10-15 20:16:46,710 INFO L132 encePairwiseOnDemand]: 826/829 looper letters, 12 selfloop transitions, 0 changer transitions 5/637 dead transitions. [2021-10-15 20:16:46,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 637 transitions, 1637 flow [2021-10-15 20:16:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3020 transitions. [2021-10-15 20:16:46,721 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9107358262967431 [2021-10-15 20:16:46,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3020 transitions. [2021-10-15 20:16:46,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3020 transitions. [2021-10-15 20:16:46,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:46,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3020 transitions. [2021-10-15 20:16:46,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 755.0) internal successors, (3020), 4 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,744 INFO L186 Difference]: Start difference. First operand has 477 places, 635 transitions, 1603 flow. Second operand 4 states and 3020 transitions. [2021-10-15 20:16:46,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 637 transitions, 1637 flow [2021-10-15 20:16:46,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 637 transitions, 1631 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:46,766 INFO L242 Difference]: Finished difference. Result has 481 places, 632 transitions, 1586 flow [2021-10-15 20:16:46,767 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=635, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1586, PETRI_PLACES=481, PETRI_TRANSITIONS=632} [2021-10-15 20:16:46,768 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -86 predicate places. [2021-10-15 20:16:46,768 INFO L470 AbstractCegarLoop]: Abstraction has has 481 places, 632 transitions, 1586 flow [2021-10-15 20:16:46,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 753.0) internal successors, (3012), 4 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) [2021-10-15 20:16:46,769 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:46,770 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] [2021-10-15 20:16:46,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-15 20:16:46,770 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:46,771 INFO L82 PathProgramCache]: Analyzing trace with hash 830792837, now seen corresponding path program 1 times [2021-10-15 20:16:46,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:46,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693714025] [2021-10-15 20:16:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:46,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:46,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:46,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693714025] [2021-10-15 20:16:46,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693714025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:46,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:46,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:46,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5167574] [2021-10-15 20:16:46,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:46,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:46,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:46,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:46,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 632 transitions, 1586 flow. Second operand has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:46,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:46,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:46,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:47,132 INFO L129 PetriNetUnfolder]: 434/1968 cut-off events. [2021-10-15 20:16:47,133 INFO L130 PetriNetUnfolder]: For 593/593 co-relation queries the response was YES. [2021-10-15 20:16:47,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2929 conditions, 1968 events. 434/1968 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14823 event pairs, 0 based on Foata normal form. 0/1595 useless extension candidates. Maximal degree in co-relation 2908. Up to 361 conditions per place. [2021-10-15 20:16:47,150 INFO L132 encePairwiseOnDemand]: 802/829 looper letters, 162 selfloop transitions, 30 changer transitions 0/670 dead transitions. [2021-10-15 20:16:47,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 670 transitions, 2129 flow [2021-10-15 20:16:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1923 transitions. [2021-10-15 20:16:47,157 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.773220747889023 [2021-10-15 20:16:47,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1923 transitions. [2021-10-15 20:16:47,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1923 transitions. [2021-10-15 20:16:47,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:47,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1923 transitions. [2021-10-15 20:16:47,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 641.0) internal successors, (1923), 3 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,170 INFO L186 Difference]: Start difference. First operand has 481 places, 632 transitions, 1586 flow. Second operand 3 states and 1923 transitions. [2021-10-15 20:16:47,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 670 transitions, 2129 flow [2021-10-15 20:16:47,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 670 transitions, 2125 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:47,191 INFO L242 Difference]: Finished difference. Result has 479 places, 655 transitions, 1862 flow [2021-10-15 20:16:47,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1862, PETRI_PLACES=479, PETRI_TRANSITIONS=655} [2021-10-15 20:16:47,194 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -88 predicate places. [2021-10-15 20:16:47,194 INFO L470 AbstractCegarLoop]: Abstraction has has 479 places, 655 transitions, 1862 flow [2021-10-15 20:16:47,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,195 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:47,195 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] [2021-10-15 20:16:47,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-15 20:16:47,196 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:47,196 INFO L82 PathProgramCache]: Analyzing trace with hash -22883762, now seen corresponding path program 1 times [2021-10-15 20:16:47,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:47,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537747569] [2021-10-15 20:16:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:47,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:47,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:47,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537747569] [2021-10-15 20:16:47,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537747569] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:47,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:47,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:47,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073420952] [2021-10-15 20:16:47,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:47,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:47,271 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:47,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 655 transitions, 1862 flow. Second operand has 4 states, 4 states have (on average 584.5) internal successors, (2338), 4 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:47,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:47,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:47,662 INFO L129 PetriNetUnfolder]: 410/1904 cut-off events. [2021-10-15 20:16:47,662 INFO L130 PetriNetUnfolder]: For 924/924 co-relation queries the response was YES. [2021-10-15 20:16:47,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2966 conditions, 1904 events. 410/1904 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14290 event pairs, 0 based on Foata normal form. 8/1577 useless extension candidates. Maximal degree in co-relation 2945. Up to 312 conditions per place. [2021-10-15 20:16:47,680 INFO L132 encePairwiseOnDemand]: 787/829 looper letters, 135 selfloop transitions, 47 changer transitions 0/658 dead transitions. [2021-10-15 20:16:47,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 658 transitions, 2248 flow [2021-10-15 20:16:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2497 transitions. [2021-10-15 20:16:47,688 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.753015681544029 [2021-10-15 20:16:47,689 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2497 transitions. [2021-10-15 20:16:47,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2497 transitions. [2021-10-15 20:16:47,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:47,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2497 transitions. [2021-10-15 20:16:47,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 624.25) internal successors, (2497), 4 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,700 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,701 INFO L186 Difference]: Start difference. First operand has 479 places, 655 transitions, 1862 flow. Second operand 4 states and 2497 transitions. [2021-10-15 20:16:47,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 658 transitions, 2248 flow [2021-10-15 20:16:47,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 658 transitions, 2182 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:47,724 INFO L242 Difference]: Finished difference. Result has 478 places, 642 transitions, 1896 flow [2021-10-15 20:16:47,725 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1896, PETRI_PLACES=478, PETRI_TRANSITIONS=642} [2021-10-15 20:16:47,725 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -89 predicate places. [2021-10-15 20:16:47,726 INFO L470 AbstractCegarLoop]: Abstraction has has 478 places, 642 transitions, 1896 flow [2021-10-15 20:16:47,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 584.5) internal successors, (2338), 4 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:47,727 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] [2021-10-15 20:16:47,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-15 20:16:47,727 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash -879074465, now seen corresponding path program 1 times [2021-10-15 20:16:47,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:47,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637967208] [2021-10-15 20:16:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:47,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:47,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:47,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637967208] [2021-10-15 20:16:47,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637967208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:47,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:47,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:16:47,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610918391] [2021-10-15 20:16:47,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:16:47,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:47,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:16:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:16:47,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 730 out of 829 [2021-10-15 20:16:47,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 642 transitions, 1896 flow. Second operand has 5 states, 5 states have (on average 732.2) internal successors, (3661), 5 states have internal predecessors, (3661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:47,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:47,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 730 of 829 [2021-10-15 20:16:47,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:47,990 INFO L129 PetriNetUnfolder]: 410/1902 cut-off events. [2021-10-15 20:16:47,990 INFO L130 PetriNetUnfolder]: For 736/736 co-relation queries the response was YES. [2021-10-15 20:16:47,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 1902 events. 410/1902 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14271 event pairs, 0 based on Foata normal form. 1/1562 useless extension candidates. Maximal degree in co-relation 2719. Up to 97 conditions per place. [2021-10-15 20:16:48,001 INFO L132 encePairwiseOnDemand]: 814/829 looper letters, 22 selfloop transitions, 0 changer transitions 17/646 dead transitions. [2021-10-15 20:16:48,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 646 transitions, 1982 flow [2021-10-15 20:16:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:16:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:16:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3689 transitions. [2021-10-15 20:16:48,011 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8899879372738239 [2021-10-15 20:16:48,012 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3689 transitions. [2021-10-15 20:16:48,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3689 transitions. [2021-10-15 20:16:48,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:48,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3689 transitions. [2021-10-15 20:16:48,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 737.8) internal successors, (3689), 5 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:48,028 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:48,028 INFO L186 Difference]: Start difference. First operand has 478 places, 642 transitions, 1896 flow. Second operand 5 states and 3689 transitions. [2021-10-15 20:16:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 646 transitions, 1982 flow [2021-10-15 20:16:48,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 646 transitions, 1981 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:48,050 INFO L242 Difference]: Finished difference. Result has 484 places, 629 transitions, 1845 flow [2021-10-15 20:16:48,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1845, PETRI_PLACES=484, PETRI_TRANSITIONS=629} [2021-10-15 20:16:48,052 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -83 predicate places. [2021-10-15 20:16:48,053 INFO L470 AbstractCegarLoop]: Abstraction has has 484 places, 629 transitions, 1845 flow [2021-10-15 20:16:48,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 732.2) internal successors, (3661), 5 states have internal predecessors, (3661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,054 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:48,054 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] [2021-10-15 20:16:48,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-15 20:16:48,055 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:48,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 932056973, now seen corresponding path program 1 times [2021-10-15 20:16:48,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:48,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398876864] [2021-10-15 20:16:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:48,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:48,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:48,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398876864] [2021-10-15 20:16:48,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398876864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:48,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:48,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:48,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394970260] [2021-10-15 20:16:48,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:48,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:48,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:48,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 629 transitions, 1845 flow. Second operand has 4 states, 4 states have (on average 585.5) internal successors, (2342), 4 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:48,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:48,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:48,478 INFO L129 PetriNetUnfolder]: 387/1864 cut-off events. [2021-10-15 20:16:48,478 INFO L130 PetriNetUnfolder]: For 1079/1079 co-relation queries the response was YES. [2021-10-15 20:16:48,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 1864 events. 387/1864 cut-off events. For 1079/1079 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14046 event pairs, 0 based on Foata normal form. 0/1535 useless extension candidates. Maximal degree in co-relation 2958. Up to 265 conditions per place. [2021-10-15 20:16:48,489 INFO L132 encePairwiseOnDemand]: 771/829 looper letters, 112 selfloop transitions, 54 changer transitions 0/629 dead transitions. [2021-10-15 20:16:48,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 629 transitions, 2192 flow [2021-10-15 20:16:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2476 transitions. [2021-10-15 20:16:48,499 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7466827503015682 [2021-10-15 20:16:48,499 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2476 transitions. [2021-10-15 20:16:48,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2476 transitions. [2021-10-15 20:16:48,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:48,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2476 transitions. [2021-10-15 20:16:48,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 619.0) internal successors, (2476), 4 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,511 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,512 INFO L186 Difference]: Start difference. First operand has 484 places, 629 transitions, 1845 flow. Second operand 4 states and 2476 transitions. [2021-10-15 20:16:48,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 629 transitions, 2192 flow [2021-10-15 20:16:48,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 629 transitions, 2182 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-10-15 20:16:48,535 INFO L242 Difference]: Finished difference. Result has 477 places, 621 transitions, 1927 flow [2021-10-15 20:16:48,537 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1927, PETRI_PLACES=477, PETRI_TRANSITIONS=621} [2021-10-15 20:16:48,537 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -90 predicate places. [2021-10-15 20:16:48,537 INFO L470 AbstractCegarLoop]: Abstraction has has 477 places, 621 transitions, 1927 flow [2021-10-15 20:16:48,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 585.5) internal successors, (2342), 4 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:48,538 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] [2021-10-15 20:16:48,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-15 20:16:48,539 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:48,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1700782205, now seen corresponding path program 1 times [2021-10-15 20:16:48,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:48,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560840877] [2021-10-15 20:16:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:48,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:48,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:48,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560840877] [2021-10-15 20:16:48,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560840877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:48,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:48,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:48,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659155645] [2021-10-15 20:16:48,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:48,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:48,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:48,590 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:48,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 621 transitions, 1927 flow. Second operand has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:48,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:48,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:48,857 INFO L129 PetriNetUnfolder]: 388/1867 cut-off events. [2021-10-15 20:16:48,858 INFO L130 PetriNetUnfolder]: For 1246/1246 co-relation queries the response was YES. [2021-10-15 20:16:48,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 1867 events. 388/1867 cut-off events. For 1246/1246 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14066 event pairs, 0 based on Foata normal form. 0/1542 useless extension candidates. Maximal degree in co-relation 3020. Up to 358 conditions per place. [2021-10-15 20:16:48,870 INFO L132 encePairwiseOnDemand]: 787/829 looper letters, 111 selfloop transitions, 44 changer transitions 0/616 dead transitions. [2021-10-15 20:16:48,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 616 transitions, 2231 flow [2021-10-15 20:16:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1880 transitions. [2021-10-15 20:16:48,879 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7559308403699236 [2021-10-15 20:16:48,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1880 transitions. [2021-10-15 20:16:48,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1880 transitions. [2021-10-15 20:16:48,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:48,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1880 transitions. [2021-10-15 20:16:48,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 626.6666666666666) internal successors, (1880), 3 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,889 INFO L186 Difference]: Start difference. First operand has 477 places, 621 transitions, 1927 flow. Second operand 3 states and 1880 transitions. [2021-10-15 20:16:48,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 616 transitions, 2231 flow [2021-10-15 20:16:48,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 616 transitions, 2125 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:16:48,913 INFO L242 Difference]: Finished difference. Result has 472 places, 615 transitions, 1993 flow [2021-10-15 20:16:48,914 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1993, PETRI_PLACES=472, PETRI_TRANSITIONS=615} [2021-10-15 20:16:48,914 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -95 predicate places. [2021-10-15 20:16:48,914 INFO L470 AbstractCegarLoop]: Abstraction has has 472 places, 615 transitions, 1993 flow [2021-10-15 20:16:48,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:48,915 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] [2021-10-15 20:16:48,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-15 20:16:48,916 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:48,916 INFO L82 PathProgramCache]: Analyzing trace with hash -191087949, now seen corresponding path program 1 times [2021-10-15 20:16:48,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:48,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610212622] [2021-10-15 20:16:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:48,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:48,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:48,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610212622] [2021-10-15 20:16:48,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610212622] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:48,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:48,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:16:48,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733739892] [2021-10-15 20:16:48,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:16:48,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:16:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:16:48,984 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 729 out of 829 [2021-10-15 20:16:48,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 615 transitions, 1993 flow. Second operand has 6 states, 6 states have (on average 730.8333333333334) internal successors, (4385), 6 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:48,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:48,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 729 of 829 [2021-10-15 20:16:48,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:49,221 INFO L129 PetriNetUnfolder]: 386/1900 cut-off events. [2021-10-15 20:16:49,221 INFO L130 PetriNetUnfolder]: For 796/796 co-relation queries the response was YES. [2021-10-15 20:16:49,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2859 conditions, 1900 events. 386/1900 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14499 event pairs, 0 based on Foata normal form. 4/1595 useless extension candidates. Maximal degree in co-relation 2837. Up to 87 conditions per place. [2021-10-15 20:16:49,231 INFO L132 encePairwiseOnDemand]: 816/829 looper letters, 18 selfloop transitions, 8 changer transitions 16/625 dead transitions. [2021-10-15 20:16:49,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 625 transitions, 2081 flow [2021-10-15 20:16:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:16:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 20:16:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5866 transitions. [2021-10-15 20:16:49,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8844993968636912 [2021-10-15 20:16:49,247 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5866 transitions. [2021-10-15 20:16:49,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5866 transitions. [2021-10-15 20:16:49,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:49,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5866 transitions. [2021-10-15 20:16:49,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 733.25) internal successors, (5866), 8 states have internal predecessors, (5866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 829.0) internal successors, (7461), 9 states have internal predecessors, (7461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,273 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 829.0) internal successors, (7461), 9 states have internal predecessors, (7461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,273 INFO L186 Difference]: Start difference. First operand has 472 places, 615 transitions, 1993 flow. Second operand 8 states and 5866 transitions. [2021-10-15 20:16:49,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 625 transitions, 2081 flow [2021-10-15 20:16:49,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 625 transitions, 1993 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:49,295 INFO L242 Difference]: Finished difference. Result has 480 places, 605 transitions, 1908 flow [2021-10-15 20:16:49,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1908, PETRI_PLACES=480, PETRI_TRANSITIONS=605} [2021-10-15 20:16:49,296 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -87 predicate places. [2021-10-15 20:16:49,297 INFO L470 AbstractCegarLoop]: Abstraction has has 480 places, 605 transitions, 1908 flow [2021-10-15 20:16:49,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 730.8333333333334) internal successors, (4385), 6 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,298 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:49,298 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:49,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-15 20:16:49,299 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:49,300 INFO L82 PathProgramCache]: Analyzing trace with hash -311747134, now seen corresponding path program 1 times [2021-10-15 20:16:49,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:49,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848405778] [2021-10-15 20:16:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:49,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:49,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:49,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848405778] [2021-10-15 20:16:49,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848405778] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:49,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:49,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:16:49,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522361301] [2021-10-15 20:16:49,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:16:49,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:49,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:16:49,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:16:49,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 745 out of 829 [2021-10-15 20:16:49,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 605 transitions, 1908 flow. Second operand has 6 states, 6 states have (on average 746.8333333333334) internal successors, (4481), 6 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:49,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 745 of 829 [2021-10-15 20:16:49,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:49,585 INFO L129 PetriNetUnfolder]: 381/1880 cut-off events. [2021-10-15 20:16:49,585 INFO L130 PetriNetUnfolder]: For 812/812 co-relation queries the response was YES. [2021-10-15 20:16:49,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2816 conditions, 1880 events. 381/1880 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 14384 event pairs, 0 based on Foata normal form. 1/1573 useless extension candidates. Maximal degree in co-relation 2792. Up to 86 conditions per place. [2021-10-15 20:16:49,596 INFO L132 encePairwiseOnDemand]: 821/829 looper letters, 10 selfloop transitions, 7 changer transitions 13/607 dead transitions. [2021-10-15 20:16:49,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 607 transitions, 1961 flow [2021-10-15 20:16:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:16:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:16:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4490 transitions. [2021-10-15 20:16:49,608 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9026940088459992 [2021-10-15 20:16:49,608 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4490 transitions. [2021-10-15 20:16:49,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4490 transitions. [2021-10-15 20:16:49,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:49,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4490 transitions. [2021-10-15 20:16:49,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 748.3333333333334) internal successors, (4490), 6 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,640 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,640 INFO L186 Difference]: Start difference. First operand has 480 places, 605 transitions, 1908 flow. Second operand 6 states and 4490 transitions. [2021-10-15 20:16:49,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 607 transitions, 1961 flow [2021-10-15 20:16:49,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 607 transitions, 1955 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:49,663 INFO L242 Difference]: Finished difference. Result has 473 places, 594 transitions, 1884 flow [2021-10-15 20:16:49,664 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1884, PETRI_PLACES=473, PETRI_TRANSITIONS=594} [2021-10-15 20:16:49,664 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -94 predicate places. [2021-10-15 20:16:49,664 INFO L470 AbstractCegarLoop]: Abstraction has has 473 places, 594 transitions, 1884 flow [2021-10-15 20:16:49,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 746.8333333333334) internal successors, (4481), 6 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,666 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:49,666 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] [2021-10-15 20:16:49,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-15 20:16:49,667 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:49,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:49,667 INFO L82 PathProgramCache]: Analyzing trace with hash -909472821, now seen corresponding path program 1 times [2021-10-15 20:16:49,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:49,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638009812] [2021-10-15 20:16:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:49,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:49,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:49,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638009812] [2021-10-15 20:16:49,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638009812] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:49,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:49,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:49,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486939529] [2021-10-15 20:16:49,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:49,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:49,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:49,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:49,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 743 out of 829 [2021-10-15 20:16:49,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 594 transitions, 1884 flow. Second operand has 3 states, 3 states have (on average 745.0) internal successors, (2235), 3 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:49,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 743 of 829 [2021-10-15 20:16:49,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:49,876 INFO L129 PetriNetUnfolder]: 272/1454 cut-off events. [2021-10-15 20:16:49,876 INFO L130 PetriNetUnfolder]: For 618/618 co-relation queries the response was YES. [2021-10-15 20:16:49,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2208 conditions, 1454 events. 272/1454 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10543 event pairs, 0 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 2184. Up to 66 conditions per place. [2021-10-15 20:16:49,883 INFO L132 encePairwiseOnDemand]: 824/829 looper letters, 15 selfloop transitions, 2 changer transitions 0/590 dead transitions. [2021-10-15 20:16:49,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 590 transitions, 1902 flow [2021-10-15 20:16:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2249 transitions. [2021-10-15 20:16:49,887 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.904302372336148 [2021-10-15 20:16:49,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2249 transitions. [2021-10-15 20:16:49,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2249 transitions. [2021-10-15 20:16:49,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:49,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2249 transitions. [2021-10-15 20:16:49,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 749.6666666666666) internal successors, (2249), 3 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,897 INFO L186 Difference]: Start difference. First operand has 473 places, 594 transitions, 1884 flow. Second operand 3 states and 2249 transitions. [2021-10-15 20:16:49,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 590 transitions, 1902 flow [2021-10-15 20:16:49,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 590 transitions, 1878 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-10-15 20:16:49,918 INFO L242 Difference]: Finished difference. Result has 459 places, 590 transitions, 1848 flow [2021-10-15 20:16:49,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1848, PETRI_PLACES=459, PETRI_TRANSITIONS=590} [2021-10-15 20:16:49,919 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -108 predicate places. [2021-10-15 20:16:49,920 INFO L470 AbstractCegarLoop]: Abstraction has has 459 places, 590 transitions, 1848 flow [2021-10-15 20:16:49,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 745.0) internal successors, (2235), 3 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:49,921 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] [2021-10-15 20:16:49,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-15 20:16:49,921 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:49,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:49,922 INFO L82 PathProgramCache]: Analyzing trace with hash -353842307, now seen corresponding path program 1 times [2021-10-15 20:16:49,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:49,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024402575] [2021-10-15 20:16:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:49,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:49,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:49,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024402575] [2021-10-15 20:16:49,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024402575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:49,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:49,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:16:49,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064664199] [2021-10-15 20:16:49,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:16:49,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:16:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:16:49,981 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 738 out of 829 [2021-10-15 20:16:49,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 590 transitions, 1848 flow. Second operand has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:49,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:49,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 738 of 829 [2021-10-15 20:16:49,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:50,132 INFO L129 PetriNetUnfolder]: 271/1507 cut-off events. [2021-10-15 20:16:50,132 INFO L130 PetriNetUnfolder]: For 615/615 co-relation queries the response was YES. [2021-10-15 20:16:50,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 1507 events. 271/1507 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11179 event pairs, 0 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 2262. Up to 69 conditions per place. [2021-10-15 20:16:50,140 INFO L132 encePairwiseOnDemand]: 824/829 looper letters, 19 selfloop transitions, 1 changer transitions 5/595 dead transitions. [2021-10-15 20:16:50,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 595 transitions, 1921 flow [2021-10-15 20:16:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:16:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:16:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3714 transitions. [2021-10-15 20:16:50,146 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8960193003618818 [2021-10-15 20:16:50,146 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3714 transitions. [2021-10-15 20:16:50,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3714 transitions. [2021-10-15 20:16:50,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:50,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3714 transitions. [2021-10-15 20:16:50,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 742.8) internal successors, (3714), 5 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:50,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:50,160 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:50,160 INFO L186 Difference]: Start difference. First operand has 459 places, 590 transitions, 1848 flow. Second operand 5 states and 3714 transitions. [2021-10-15 20:16:50,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 595 transitions, 1921 flow [2021-10-15 20:16:50,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 595 transitions, 1919 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:50,181 INFO L242 Difference]: Finished difference. Result has 465 places, 589 transitions, 1849 flow [2021-10-15 20:16:50,182 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1849, PETRI_PLACES=465, PETRI_TRANSITIONS=589} [2021-10-15 20:16:50,182 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -102 predicate places. [2021-10-15 20:16:50,183 INFO L470 AbstractCegarLoop]: Abstraction has has 465 places, 589 transitions, 1849 flow [2021-10-15 20:16:50,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:50,184 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:50,184 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] [2021-10-15 20:16:50,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-15 20:16:50,185 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:50,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:50,185 INFO L82 PathProgramCache]: Analyzing trace with hash -56726392, now seen corresponding path program 1 times [2021-10-15 20:16:50,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:50,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164897918] [2021-10-15 20:16:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:50,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:50,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:50,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164897918] [2021-10-15 20:16:50,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164897918] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:50,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:50,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:50,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15722357] [2021-10-15 20:16:50,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:50,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:50,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:50,222 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:50,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 589 transitions, 1849 flow. Second operand has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:50,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:50,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:50,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:50,499 INFO L129 PetriNetUnfolder]: 303/1737 cut-off events. [2021-10-15 20:16:50,499 INFO L130 PetriNetUnfolder]: For 1046/1046 co-relation queries the response was YES. [2021-10-15 20:16:50,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1737 events. 303/1737 cut-off events. For 1046/1046 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13218 event pairs, 0 based on Foata normal form. 4/1487 useless extension candidates. Maximal degree in co-relation 2905. Up to 327 conditions per place. [2021-10-15 20:16:50,549 INFO L132 encePairwiseOnDemand]: 813/829 looper letters, 152 selfloop transitions, 18 changer transitions 0/606 dead transitions. [2021-10-15 20:16:50,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 606 transitions, 2291 flow [2021-10-15 20:16:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1886 transitions. [2021-10-15 20:16:50,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7583433856051468 [2021-10-15 20:16:50,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1886 transitions. [2021-10-15 20:16:50,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1886 transitions. [2021-10-15 20:16:50,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:50,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1886 transitions. [2021-10-15 20:16:50,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:50,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:50,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:50,563 INFO L186 Difference]: Start difference. First operand has 465 places, 589 transitions, 1849 flow. Second operand 3 states and 1886 transitions. [2021-10-15 20:16:50,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 606 transitions, 2291 flow [2021-10-15 20:16:50,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 606 transitions, 2283 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-15 20:16:50,588 INFO L242 Difference]: Finished difference. Result has 463 places, 595 transitions, 1982 flow [2021-10-15 20:16:50,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1982, PETRI_PLACES=463, PETRI_TRANSITIONS=595} [2021-10-15 20:16:50,589 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -104 predicate places. [2021-10-15 20:16:50,589 INFO L470 AbstractCegarLoop]: Abstraction has has 463 places, 595 transitions, 1982 flow [2021-10-15 20:16:50,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:50,590 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:50,590 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] [2021-10-15 20:16:50,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-15 20:16:50,591 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:50,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1257835912, now seen corresponding path program 1 times [2021-10-15 20:16:50,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:50,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840682132] [2021-10-15 20:16:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:50,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:50,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:50,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840682132] [2021-10-15 20:16:50,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840682132] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:50,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:50,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:50,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133193559] [2021-10-15 20:16:50,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:50,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:50,630 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 674 out of 829 [2021-10-15 20:16:50,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 595 transitions, 1982 flow. Second operand has 3 states, 3 states have (on average 675.3333333333334) internal successors, (2026), 3 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:50,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:50,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 674 of 829 [2021-10-15 20:16:50,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:50,983 INFO L129 PetriNetUnfolder]: 454/2530 cut-off events. [2021-10-15 20:16:50,983 INFO L130 PetriNetUnfolder]: For 1397/1397 co-relation queries the response was YES. [2021-10-15 20:16:50,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 2530 events. 454/2530 cut-off events. For 1397/1397 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 21305 event pairs, 0 based on Foata normal form. 16/2174 useless extension candidates. Maximal degree in co-relation 4028. Up to 163 conditions per place. [2021-10-15 20:16:50,999 INFO L132 encePairwiseOnDemand]: 806/829 looper letters, 129 selfloop transitions, 12 changer transitions 0/638 dead transitions. [2021-10-15 20:16:50,999 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 638 transitions, 2530 flow [2021-10-15 20:16:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2157 transitions. [2021-10-15 20:16:51,002 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673100120627262 [2021-10-15 20:16:51,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2157 transitions. [2021-10-15 20:16:51,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2157 transitions. [2021-10-15 20:16:51,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:51,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2157 transitions. [2021-10-15 20:16:51,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 719.0) internal successors, (2157), 3 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,012 INFO L186 Difference]: Start difference. First operand has 463 places, 595 transitions, 1982 flow. Second operand 3 states and 2157 transitions. [2021-10-15 20:16:51,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 638 transitions, 2530 flow [2021-10-15 20:16:51,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 638 transitions, 2474 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:51,046 INFO L242 Difference]: Finished difference. Result has 464 places, 596 transitions, 2010 flow [2021-10-15 20:16:51,047 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2010, PETRI_PLACES=464, PETRI_TRANSITIONS=596} [2021-10-15 20:16:51,047 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -103 predicate places. [2021-10-15 20:16:51,047 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 596 transitions, 2010 flow [2021-10-15 20:16:51,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 675.3333333333334) internal successors, (2026), 3 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,048 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:51,048 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] [2021-10-15 20:16:51,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-15 20:16:51,049 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:51,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:51,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1516001350, now seen corresponding path program 1 times [2021-10-15 20:16:51,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:51,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145564782] [2021-10-15 20:16:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:51,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:51,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:51,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145564782] [2021-10-15 20:16:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145564782] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:51,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:51,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:51,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036361841] [2021-10-15 20:16:51,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:51,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:51,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:51,097 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:51,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 596 transitions, 2010 flow. Second operand has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 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) [2021-10-15 20:16:51,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:51,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:51,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:51,414 INFO L129 PetriNetUnfolder]: 396/2100 cut-off events. [2021-10-15 20:16:51,414 INFO L130 PetriNetUnfolder]: For 1458/1458 co-relation queries the response was YES. [2021-10-15 20:16:51,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 2100 events. 396/2100 cut-off events. For 1458/1458 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 16382 event pairs, 0 based on Foata normal form. 24/1776 useless extension candidates. Maximal degree in co-relation 3462. Up to 359 conditions per place. [2021-10-15 20:16:51,426 INFO L132 encePairwiseOnDemand]: 803/829 looper letters, 116 selfloop transitions, 19 changer transitions 0/572 dead transitions. [2021-10-15 20:16:51,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 572 transitions, 2128 flow [2021-10-15 20:16:51,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2438 transitions. [2021-10-15 20:16:51,431 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7352231604342582 [2021-10-15 20:16:51,431 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2438 transitions. [2021-10-15 20:16:51,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2438 transitions. [2021-10-15 20:16:51,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:51,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2438 transitions. [2021-10-15 20:16:51,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 609.5) internal successors, (2438), 4 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,441 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,441 INFO L186 Difference]: Start difference. First operand has 464 places, 596 transitions, 2010 flow. Second operand 4 states and 2438 transitions. [2021-10-15 20:16:51,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 572 transitions, 2128 flow [2021-10-15 20:16:51,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 572 transitions, 2116 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:51,495 INFO L242 Difference]: Finished difference. Result has 458 places, 572 transitions, 1884 flow [2021-10-15 20:16:51,496 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1884, PETRI_PLACES=458, PETRI_TRANSITIONS=572} [2021-10-15 20:16:51,496 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -109 predicate places. [2021-10-15 20:16:51,497 INFO L470 AbstractCegarLoop]: Abstraction has has 458 places, 572 transitions, 1884 flow [2021-10-15 20:16:51,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 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) [2021-10-15 20:16:51,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:51,498 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] [2021-10-15 20:16:51,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-15 20:16:51,499 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:51,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1740926462, now seen corresponding path program 1 times [2021-10-15 20:16:51,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:51,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56042404] [2021-10-15 20:16:51,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:51,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:51,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:51,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56042404] [2021-10-15 20:16:51,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56042404] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:51,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:51,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:16:51,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979682004] [2021-10-15 20:16:51,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:16:51,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:16:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:16:51,557 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 639 out of 829 [2021-10-15 20:16:51,560 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 572 transitions, 1884 flow. Second operand has 6 states, 6 states have (on average 641.3333333333334) internal successors, (3848), 6 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,560 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:51,560 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 639 of 829 [2021-10-15 20:16:51,560 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:51,936 INFO L129 PetriNetUnfolder]: 394/2120 cut-off events. [2021-10-15 20:16:51,936 INFO L130 PetriNetUnfolder]: For 1189/1189 co-relation queries the response was YES. [2021-10-15 20:16:51,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3454 conditions, 2120 events. 394/2120 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 16675 event pairs, 0 based on Foata normal form. 2/1774 useless extension candidates. Maximal degree in co-relation 3430. Up to 141 conditions per place. [2021-10-15 20:16:51,949 INFO L132 encePairwiseOnDemand]: 793/829 looper letters, 73 selfloop transitions, 45 changer transitions 0/579 dead transitions. [2021-10-15 20:16:51,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 579 transitions, 2144 flow [2021-10-15 20:16:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:16:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:16:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4579 transitions. [2021-10-15 20:16:51,955 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7890746165776322 [2021-10-15 20:16:51,955 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4579 transitions. [2021-10-15 20:16:51,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4579 transitions. [2021-10-15 20:16:51,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:51,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4579 transitions. [2021-10-15 20:16:51,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 654.1428571428571) internal successors, (4579), 7 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,973 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:51,973 INFO L186 Difference]: Start difference. First operand has 458 places, 572 transitions, 1884 flow. Second operand 7 states and 4579 transitions. [2021-10-15 20:16:51,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 579 transitions, 2144 flow [2021-10-15 20:16:51,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 579 transitions, 2106 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:16:51,997 INFO L242 Difference]: Finished difference. Result has 462 places, 572 transitions, 1939 flow [2021-10-15 20:16:51,997 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1939, PETRI_PLACES=462, PETRI_TRANSITIONS=572} [2021-10-15 20:16:52,000 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -105 predicate places. [2021-10-15 20:16:52,000 INFO L470 AbstractCegarLoop]: Abstraction has has 462 places, 572 transitions, 1939 flow [2021-10-15 20:16:52,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 641.3333333333334) internal successors, (3848), 6 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,002 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:52,002 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:52,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-15 20:16:52,002 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:52,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1740938378, now seen corresponding path program 1 times [2021-10-15 20:16:52,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:52,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644727557] [2021-10-15 20:16:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:52,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:52,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:52,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644727557] [2021-10-15 20:16:52,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644727557] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:52,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:52,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:16:52,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485039425] [2021-10-15 20:16:52,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:16:52,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:16:52,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:16:52,065 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 641 out of 829 [2021-10-15 20:16:52,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 572 transitions, 1939 flow. Second operand has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:52,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 641 of 829 [2021-10-15 20:16:52,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:52,464 INFO L129 PetriNetUnfolder]: 394/2118 cut-off events. [2021-10-15 20:16:52,465 INFO L130 PetriNetUnfolder]: For 1288/1288 co-relation queries the response was YES. [2021-10-15 20:16:52,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3527 conditions, 2118 events. 394/2118 cut-off events. For 1288/1288 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 16641 event pairs, 0 based on Foata normal form. 1/1771 useless extension candidates. Maximal degree in co-relation 3502. Up to 143 conditions per place. [2021-10-15 20:16:52,477 INFO L132 encePairwiseOnDemand]: 800/829 looper letters, 126 selfloop transitions, 25 changer transitions 12/624 dead transitions. [2021-10-15 20:16:52,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 624 transitions, 2557 flow [2021-10-15 20:16:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:16:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:16:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4628 transitions. [2021-10-15 20:16:52,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7975185249009134 [2021-10-15 20:16:52,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4628 transitions. [2021-10-15 20:16:52,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4628 transitions. [2021-10-15 20:16:52,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:52,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4628 transitions. [2021-10-15 20:16:52,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 661.1428571428571) internal successors, (4628), 7 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,541 INFO L186 Difference]: Start difference. First operand has 462 places, 572 transitions, 1939 flow. Second operand 7 states and 4628 transitions. [2021-10-15 20:16:52,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 624 transitions, 2557 flow [2021-10-15 20:16:52,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 624 transitions, 2393 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-15 20:16:52,565 INFO L242 Difference]: Finished difference. Result has 466 places, 578 transitions, 1965 flow [2021-10-15 20:16:52,566 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1965, PETRI_PLACES=466, PETRI_TRANSITIONS=578} [2021-10-15 20:16:52,567 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -101 predicate places. [2021-10-15 20:16:52,567 INFO L470 AbstractCegarLoop]: Abstraction has has 466 places, 578 transitions, 1965 flow [2021-10-15 20:16:52,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 643.0) internal successors, (3858), 6 states have internal predecessors, (3858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:52,568 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] [2021-10-15 20:16:52,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-15 20:16:52,569 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:52,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:52,569 INFO L82 PathProgramCache]: Analyzing trace with hash -935530627, now seen corresponding path program 1 times [2021-10-15 20:16:52,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:52,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697633242] [2021-10-15 20:16:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:52,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:52,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:52,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697633242] [2021-10-15 20:16:52,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697633242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:52,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:52,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:52,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486177308] [2021-10-15 20:16:52,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:52,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:52,630 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:52,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 578 transitions, 1965 flow. Second operand has 4 states, 4 states have (on average 585.75) internal successors, (2343), 4 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:52,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:52,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:52,953 INFO L129 PetriNetUnfolder]: 393/2074 cut-off events. [2021-10-15 20:16:52,954 INFO L130 PetriNetUnfolder]: For 1545/1545 co-relation queries the response was YES. [2021-10-15 20:16:52,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 2074 events. 393/2074 cut-off events. For 1545/1545 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 16107 event pairs, 0 based on Foata normal form. 7/1735 useless extension candidates. Maximal degree in co-relation 3527. Up to 335 conditions per place. [2021-10-15 20:16:52,967 INFO L132 encePairwiseOnDemand]: 811/829 looper letters, 119 selfloop transitions, 18 changer transitions 37/588 dead transitions. [2021-10-15 20:16:52,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 588 transitions, 2293 flow [2021-10-15 20:16:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2444 transitions. [2021-10-15 20:16:52,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7370325693606755 [2021-10-15 20:16:52,971 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2444 transitions. [2021-10-15 20:16:52,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2444 transitions. [2021-10-15 20:16:52,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:52,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2444 transitions. [2021-10-15 20:16:52,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,980 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:52,980 INFO L186 Difference]: Start difference. First operand has 466 places, 578 transitions, 1965 flow. Second operand 4 states and 2444 transitions. [2021-10-15 20:16:52,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 588 transitions, 2293 flow [2021-10-15 20:16:52,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 588 transitions, 2255 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-10-15 20:16:53,004 INFO L242 Difference]: Finished difference. Result has 464 places, 542 transitions, 1910 flow [2021-10-15 20:16:53,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1910, PETRI_PLACES=464, PETRI_TRANSITIONS=542} [2021-10-15 20:16:53,005 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -103 predicate places. [2021-10-15 20:16:53,005 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 542 transitions, 1910 flow [2021-10-15 20:16:53,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 585.75) internal successors, (2343), 4 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:53,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:53,006 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] [2021-10-15 20:16:53,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-15 20:16:53,007 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:53,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1333490113, now seen corresponding path program 1 times [2021-10-15 20:16:53,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:53,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772509011] [2021-10-15 20:16:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:53,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:53,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:53,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772509011] [2021-10-15 20:16:53,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772509011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:53,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:53,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:16:53,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366870367] [2021-10-15 20:16:53,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:16:53,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:53,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:16:53,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:16:53,071 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 660 out of 829 [2021-10-15 20:16:53,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 542 transitions, 1910 flow. Second operand has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:53,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:53,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 660 of 829 [2021-10-15 20:16:53,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:53,476 INFO L129 PetriNetUnfolder]: 577/2749 cut-off events. [2021-10-15 20:16:53,476 INFO L130 PetriNetUnfolder]: For 1871/1871 co-relation queries the response was YES. [2021-10-15 20:16:53,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4295 conditions, 2749 events. 577/2749 cut-off events. For 1871/1871 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 21819 event pairs, 0 based on Foata normal form. 0/2231 useless extension candidates. Maximal degree in co-relation 4267. Up to 135 conditions per place. [2021-10-15 20:16:53,491 INFO L132 encePairwiseOnDemand]: 808/829 looper letters, 119 selfloop transitions, 22 changer transitions 0/591 dead transitions. [2021-10-15 20:16:53,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 591 transitions, 2509 flow [2021-10-15 20:16:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:16:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:16:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4741 transitions. [2021-10-15 20:16:53,497 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169912114423574 [2021-10-15 20:16:53,498 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4741 transitions. [2021-10-15 20:16:53,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4741 transitions. [2021-10-15 20:16:53,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:53,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4741 transitions. [2021-10-15 20:16:53,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 677.2857142857143) internal successors, (4741), 7 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:53,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:53,517 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:53,518 INFO L186 Difference]: Start difference. First operand has 464 places, 542 transitions, 1910 flow. Second operand 7 states and 4741 transitions. [2021-10-15 20:16:53,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 591 transitions, 2509 flow [2021-10-15 20:16:53,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 591 transitions, 2506 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-15 20:16:53,546 INFO L242 Difference]: Finished difference. Result has 438 places, 545 transitions, 1981 flow [2021-10-15 20:16:53,546 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1981, PETRI_PLACES=438, PETRI_TRANSITIONS=545} [2021-10-15 20:16:53,547 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -129 predicate places. [2021-10-15 20:16:53,547 INFO L470 AbstractCegarLoop]: Abstraction has has 438 places, 545 transitions, 1981 flow [2021-10-15 20:16:53,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:53,548 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:53,548 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] [2021-10-15 20:16:53,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-15 20:16:53,548 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash -901089383, now seen corresponding path program 1 times [2021-10-15 20:16:53,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:53,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004159574] [2021-10-15 20:16:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:53,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:53,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:53,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004159574] [2021-10-15 20:16:53,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004159574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:53,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:53,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:16:53,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745082952] [2021-10-15 20:16:53,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:16:53,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:53,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:16:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:16:53,620 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 660 out of 829 [2021-10-15 20:16:53,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 545 transitions, 1981 flow. Second operand has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:53,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:53,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 660 of 829 [2021-10-15 20:16:53,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:54,190 INFO L129 PetriNetUnfolder]: 1086/4807 cut-off events. [2021-10-15 20:16:54,190 INFO L130 PetriNetUnfolder]: For 3491/3491 co-relation queries the response was YES. [2021-10-15 20:16:54,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 4807 events. 1086/4807 cut-off events. For 3491/3491 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 42889 event pairs, 0 based on Foata normal form. 8/3834 useless extension candidates. Maximal degree in co-relation 7236. Up to 222 conditions per place. [2021-10-15 20:16:54,213 INFO L132 encePairwiseOnDemand]: 804/829 looper letters, 129 selfloop transitions, 23 changer transitions 0/602 dead transitions. [2021-10-15 20:16:54,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 602 transitions, 2621 flow [2021-10-15 20:16:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:16:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:16:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4746 transitions. [2021-10-15 20:16:54,220 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178528347406514 [2021-10-15 20:16:54,220 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4746 transitions. [2021-10-15 20:16:54,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4746 transitions. [2021-10-15 20:16:54,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:54,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4746 transitions. [2021-10-15 20:16:54,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,242 INFO L186 Difference]: Start difference. First operand has 438 places, 545 transitions, 1981 flow. Second operand 7 states and 4746 transitions. [2021-10-15 20:16:54,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 602 transitions, 2621 flow [2021-10-15 20:16:54,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 602 transitions, 2599 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:54,291 INFO L242 Difference]: Finished difference. Result has 448 places, 559 transitions, 2140 flow [2021-10-15 20:16:54,292 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2140, PETRI_PLACES=448, PETRI_TRANSITIONS=559} [2021-10-15 20:16:54,293 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -119 predicate places. [2021-10-15 20:16:54,293 INFO L470 AbstractCegarLoop]: Abstraction has has 448 places, 559 transitions, 2140 flow [2021-10-15 20:16:54,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,294 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:54,294 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] [2021-10-15 20:16:54,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-15 20:16:54,294 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash -593051815, now seen corresponding path program 1 times [2021-10-15 20:16:54,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:54,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573012571] [2021-10-15 20:16:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:54,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:54,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:54,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573012571] [2021-10-15 20:16:54,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573012571] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:54,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:54,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:54,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632838415] [2021-10-15 20:16:54,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:54,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:54,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:54,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:54,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 750 out of 829 [2021-10-15 20:16:54,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 559 transitions, 2140 flow. Second operand has 3 states, 3 states have (on average 752.0) internal successors, (2256), 3 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:54,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 750 of 829 [2021-10-15 20:16:54,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:54,853 INFO L129 PetriNetUnfolder]: 1174/5326 cut-off events. [2021-10-15 20:16:54,853 INFO L130 PetriNetUnfolder]: For 3317/3317 co-relation queries the response was YES. [2021-10-15 20:16:54,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7627 conditions, 5326 events. 1174/5326 cut-off events. For 3317/3317 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 49222 event pairs, 0 based on Foata normal form. 22/4249 useless extension candidates. Maximal degree in co-relation 7593. Up to 252 conditions per place. [2021-10-15 20:16:54,896 INFO L132 encePairwiseOnDemand]: 820/829 looper letters, 5 selfloop transitions, 7 changer transitions 0/544 dead transitions. [2021-10-15 20:16:54,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 544 transitions, 2086 flow [2021-10-15 20:16:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2264 transitions. [2021-10-15 20:16:54,899 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9103337354242059 [2021-10-15 20:16:54,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2264 transitions. [2021-10-15 20:16:54,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2264 transitions. [2021-10-15 20:16:54,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:54,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2264 transitions. [2021-10-15 20:16:54,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 754.6666666666666) internal successors, (2264), 3 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,908 INFO L186 Difference]: Start difference. First operand has 448 places, 559 transitions, 2140 flow. Second operand 3 states and 2264 transitions. [2021-10-15 20:16:54,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 544 transitions, 2086 flow [2021-10-15 20:16:54,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 544 transitions, 2056 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-10-15 20:16:54,967 INFO L242 Difference]: Finished difference. Result has 445 places, 544 transitions, 2055 flow [2021-10-15 20:16:54,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2055, PETRI_PLACES=445, PETRI_TRANSITIONS=544} [2021-10-15 20:16:54,968 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -122 predicate places. [2021-10-15 20:16:54,969 INFO L470 AbstractCegarLoop]: Abstraction has has 445 places, 544 transitions, 2055 flow [2021-10-15 20:16:54,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 752.0) internal successors, (2256), 3 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:54,969 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:54,970 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] [2021-10-15 20:16:54,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-15 20:16:54,970 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1515937655, now seen corresponding path program 1 times [2021-10-15 20:16:54,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:54,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431216783] [2021-10-15 20:16:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:54,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:55,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:55,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431216783] [2021-10-15 20:16:55,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431216783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:55,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:55,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:16:55,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231894273] [2021-10-15 20:16:55,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:16:55,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:55,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:16:55,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:16:55,012 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 740 out of 829 [2021-10-15 20:16:55,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 544 transitions, 2055 flow. Second operand has 5 states, 5 states have (on average 742.0) internal successors, (3710), 5 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:55,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:55,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 740 of 829 [2021-10-15 20:16:55,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:55,499 INFO L129 PetriNetUnfolder]: 1174/5314 cut-off events. [2021-10-15 20:16:55,499 INFO L130 PetriNetUnfolder]: For 3424/3424 co-relation queries the response was YES. [2021-10-15 20:16:55,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 5314 events. 1174/5314 cut-off events. For 3424/3424 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 49032 event pairs, 0 based on Foata normal form. 6/4221 useless extension candidates. Maximal degree in co-relation 7777. Up to 252 conditions per place. [2021-10-15 20:16:55,529 INFO L132 encePairwiseOnDemand]: 825/829 looper letters, 27 selfloop transitions, 3 changer transitions 4/548 dead transitions. [2021-10-15 20:16:55,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 548 transitions, 2132 flow [2021-10-15 20:16:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:16:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:16:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3728 transitions. [2021-10-15 20:16:55,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8993968636911942 [2021-10-15 20:16:55,534 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3728 transitions. [2021-10-15 20:16:55,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3728 transitions. [2021-10-15 20:16:55,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:55,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3728 transitions. [2021-10-15 20:16:55,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 745.6) internal successors, (3728), 5 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:55,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:55,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:55,548 INFO L186 Difference]: Start difference. First operand has 445 places, 544 transitions, 2055 flow. Second operand 5 states and 3728 transitions. [2021-10-15 20:16:55,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 548 transitions, 2132 flow [2021-10-15 20:16:55,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 548 transitions, 2125 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:55,599 INFO L242 Difference]: Finished difference. Result has 451 places, 542 transitions, 2049 flow [2021-10-15 20:16:55,600 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2049, PETRI_PLACES=451, PETRI_TRANSITIONS=542} [2021-10-15 20:16:55,600 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -116 predicate places. [2021-10-15 20:16:55,600 INFO L470 AbstractCegarLoop]: Abstraction has has 451 places, 542 transitions, 2049 flow [2021-10-15 20:16:55,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 742.0) internal successors, (3710), 5 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:55,601 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:55,601 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] [2021-10-15 20:16:55,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-15 20:16:55,602 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:55,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:55,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1640201414, now seen corresponding path program 1 times [2021-10-15 20:16:55,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:55,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306192782] [2021-10-15 20:16:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:55,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:55,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:55,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306192782] [2021-10-15 20:16:55,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306192782] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:55,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:55,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:16:55,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916814499] [2021-10-15 20:16:55,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:16:55,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:55,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:16:55,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:16:55,631 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 754 out of 829 [2021-10-15 20:16:55,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 542 transitions, 2049 flow. Second operand has 3 states, 3 states have (on average 756.0) internal successors, (2268), 3 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:55,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:55,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 754 of 829 [2021-10-15 20:16:55,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:56,137 INFO L129 PetriNetUnfolder]: 1209/5618 cut-off events. [2021-10-15 20:16:56,137 INFO L130 PetriNetUnfolder]: For 3680/3680 co-relation queries the response was YES. [2021-10-15 20:16:56,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8192 conditions, 5618 events. 1209/5618 cut-off events. For 3680/3680 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 53036 event pairs, 0 based on Foata normal form. 0/4488 useless extension candidates. Maximal degree in co-relation 8153. Up to 262 conditions per place. [2021-10-15 20:16:56,164 INFO L132 encePairwiseOnDemand]: 826/829 looper letters, 19 selfloop transitions, 2 changer transitions 0/543 dead transitions. [2021-10-15 20:16:56,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 543 transitions, 2093 flow [2021-10-15 20:16:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:16:56,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:16:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2283 transitions. [2021-10-15 20:16:56,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9179734620024126 [2021-10-15 20:16:56,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2283 transitions. [2021-10-15 20:16:56,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2283 transitions. [2021-10-15 20:16:56,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:56,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2283 transitions. [2021-10-15 20:16:56,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,176 INFO L186 Difference]: Start difference. First operand has 451 places, 542 transitions, 2049 flow. Second operand 3 states and 2283 transitions. [2021-10-15 20:16:56,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 543 transitions, 2093 flow [2021-10-15 20:16:56,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 543 transitions, 2085 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-10-15 20:16:56,241 INFO L242 Difference]: Finished difference. Result has 449 places, 543 transitions, 2055 flow [2021-10-15 20:16:56,242 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2055, PETRI_PLACES=449, PETRI_TRANSITIONS=543} [2021-10-15 20:16:56,242 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -118 predicate places. [2021-10-15 20:16:56,243 INFO L470 AbstractCegarLoop]: Abstraction has has 449 places, 543 transitions, 2055 flow [2021-10-15 20:16:56,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 756.0) internal successors, (2268), 3 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,243 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:56,243 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] [2021-10-15 20:16:56,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-15 20:16:56,244 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash 48742328, now seen corresponding path program 1 times [2021-10-15 20:16:56,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:56,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224302761] [2021-10-15 20:16:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:56,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:56,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:56,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224302761] [2021-10-15 20:16:56,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224302761] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:56,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:56,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:56,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682607866] [2021-10-15 20:16:56,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:56,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:56,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 707 out of 829 [2021-10-15 20:16:56,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 543 transitions, 2055 flow. Second operand has 4 states, 4 states have (on average 708.25) internal successors, (2833), 4 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:56,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 707 of 829 [2021-10-15 20:16:56,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:56,675 INFO L129 PetriNetUnfolder]: 890/4468 cut-off events. [2021-10-15 20:16:56,675 INFO L130 PetriNetUnfolder]: For 2543/2543 co-relation queries the response was YES. [2021-10-15 20:16:56,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6566 conditions, 4468 events. 890/4468 cut-off events. For 2543/2543 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 40298 event pairs, 0 based on Foata normal form. 0/3630 useless extension candidates. Maximal degree in co-relation 6529. Up to 187 conditions per place. [2021-10-15 20:16:56,702 INFO L132 encePairwiseOnDemand]: 818/829 looper letters, 13 selfloop transitions, 11 changer transitions 0/522 dead transitions. [2021-10-15 20:16:56,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 522 transitions, 1930 flow [2021-10-15 20:16:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2852 transitions. [2021-10-15 20:16:56,706 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8600723763570567 [2021-10-15 20:16:56,706 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2852 transitions. [2021-10-15 20:16:56,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2852 transitions. [2021-10-15 20:16:56,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:56,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2852 transitions. [2021-10-15 20:16:56,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,716 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,716 INFO L186 Difference]: Start difference. First operand has 449 places, 543 transitions, 2055 flow. Second operand 4 states and 2852 transitions. [2021-10-15 20:16:56,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 522 transitions, 1930 flow [2021-10-15 20:16:56,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 522 transitions, 1855 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-10-15 20:16:56,764 INFO L242 Difference]: Finished difference. Result has 445 places, 522 transitions, 1829 flow [2021-10-15 20:16:56,765 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1829, PETRI_PLACES=445, PETRI_TRANSITIONS=522} [2021-10-15 20:16:56,765 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -122 predicate places. [2021-10-15 20:16:56,765 INFO L470 AbstractCegarLoop]: Abstraction has has 445 places, 522 transitions, 1829 flow [2021-10-15 20:16:56,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 708.25) internal successors, (2833), 4 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,766 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:56,766 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] [2021-10-15 20:16:56,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-15 20:16:56,767 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:56,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:56,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1967560492, now seen corresponding path program 1 times [2021-10-15 20:16:56,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:56,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310355776] [2021-10-15 20:16:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:56,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:56,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:56,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:56,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310355776] [2021-10-15 20:16:56,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310355776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:56,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:56,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:56,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138214699] [2021-10-15 20:16:56,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:56,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:56,832 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:16:56,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 522 transitions, 1829 flow. Second operand has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:56,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:56,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:16:56,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:57,259 INFO L129 PetriNetUnfolder]: 584/3205 cut-off events. [2021-10-15 20:16:57,259 INFO L130 PetriNetUnfolder]: For 2204/2204 co-relation queries the response was YES. [2021-10-15 20:16:57,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5204 conditions, 3205 events. 584/3205 cut-off events. For 2204/2204 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 26601 event pairs, 0 based on Foata normal form. 0/2640 useless extension candidates. Maximal degree in co-relation 5168. Up to 368 conditions per place. [2021-10-15 20:16:57,275 INFO L132 encePairwiseOnDemand]: 799/829 looper letters, 73 selfloop transitions, 30 changer transitions 0/524 dead transitions. [2021-10-15 20:16:57,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 524 transitions, 2045 flow [2021-10-15 20:16:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:16:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:16:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2421 transitions. [2021-10-15 20:16:57,279 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7300965018094089 [2021-10-15 20:16:57,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2421 transitions. [2021-10-15 20:16:57,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2421 transitions. [2021-10-15 20:16:57,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:57,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2421 transitions. [2021-10-15 20:16:57,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 605.25) internal successors, (2421), 4 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:57,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:57,288 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 829.0) internal successors, (4145), 5 states have internal predecessors, (4145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:57,288 INFO L186 Difference]: Start difference. First operand has 445 places, 522 transitions, 1829 flow. Second operand 4 states and 2421 transitions. [2021-10-15 20:16:57,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 524 transitions, 2045 flow [2021-10-15 20:16:57,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 524 transitions, 2023 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:16:57,320 INFO L242 Difference]: Finished difference. Result has 445 places, 519 transitions, 1861 flow [2021-10-15 20:16:57,321 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1861, PETRI_PLACES=445, PETRI_TRANSITIONS=519} [2021-10-15 20:16:57,321 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -122 predicate places. [2021-10-15 20:16:57,321 INFO L470 AbstractCegarLoop]: Abstraction has has 445 places, 519 transitions, 1861 flow [2021-10-15 20:16:57,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:57,322 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:57,322 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 20:16:57,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-15 20:16:57,322 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:57,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:57,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2061375645, now seen corresponding path program 1 times [2021-10-15 20:16:57,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:57,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886361453] [2021-10-15 20:16:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:57,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:57,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:57,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:57,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886361453] [2021-10-15 20:16:57,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886361453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:57,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:57,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 20:16:57,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902529771] [2021-10-15 20:16:57,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:16:57,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:57,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:16:57,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:16:57,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 640 out of 829 [2021-10-15 20:16:57,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 519 transitions, 1861 flow. Second operand has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:57,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:57,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 640 of 829 [2021-10-15 20:16:57,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:57,957 INFO L129 PetriNetUnfolder]: 583/3226 cut-off events. [2021-10-15 20:16:57,957 INFO L130 PetriNetUnfolder]: For 2267/2267 co-relation queries the response was YES. [2021-10-15 20:16:57,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 3226 events. 583/3226 cut-off events. For 2267/2267 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 26926 event pairs, 0 based on Foata normal form. 2/2662 useless extension candidates. Maximal degree in co-relation 5174. Up to 249 conditions per place. [2021-10-15 20:16:57,970 INFO L132 encePairwiseOnDemand]: 793/829 looper letters, 99 selfloop transitions, 37 changer transitions 7/551 dead transitions. [2021-10-15 20:16:57,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 551 transitions, 2315 flow [2021-10-15 20:16:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 20:16:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 20:16:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5888 transitions. [2021-10-15 20:16:57,977 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7891703524996649 [2021-10-15 20:16:57,977 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5888 transitions. [2021-10-15 20:16:57,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5888 transitions. [2021-10-15 20:16:57,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:57,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5888 transitions. [2021-10-15 20:16:57,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 654.2222222222222) internal successors, (5888), 9 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 829.0) internal successors, (8290), 10 states have internal predecessors, (8290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,042 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 829.0) internal successors, (8290), 10 states have internal predecessors, (8290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,042 INFO L186 Difference]: Start difference. First operand has 445 places, 519 transitions, 1861 flow. Second operand 9 states and 5888 transitions. [2021-10-15 20:16:58,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 551 transitions, 2315 flow [2021-10-15 20:16:58,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 551 transitions, 2231 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 20:16:58,077 INFO L242 Difference]: Finished difference. Result has 454 places, 527 transitions, 1999 flow [2021-10-15 20:16:58,078 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1999, PETRI_PLACES=454, PETRI_TRANSITIONS=527} [2021-10-15 20:16:58,079 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -113 predicate places. [2021-10-15 20:16:58,079 INFO L470 AbstractCegarLoop]: Abstraction has has 454 places, 527 transitions, 1999 flow [2021-10-15 20:16:58,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 642.0) internal successors, (4494), 7 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,080 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:58,080 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] [2021-10-15 20:16:58,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-15 20:16:58,081 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:58,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:58,081 INFO L82 PathProgramCache]: Analyzing trace with hash 767839690, now seen corresponding path program 1 times [2021-10-15 20:16:58,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:58,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390003348] [2021-10-15 20:16:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:58,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:58,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:58,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390003348] [2021-10-15 20:16:58,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390003348] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:58,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:58,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:16:58,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359227712] [2021-10-15 20:16:58,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:16:58,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:16:58,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:16:58,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 640 out of 829 [2021-10-15 20:16:58,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 527 transitions, 1999 flow. Second operand has 6 states, 6 states have (on average 642.3333333333334) internal successors, (3854), 6 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:58,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 640 of 829 [2021-10-15 20:16:58,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:58,662 INFO L129 PetriNetUnfolder]: 579/3228 cut-off events. [2021-10-15 20:16:58,662 INFO L130 PetriNetUnfolder]: For 2446/2446 co-relation queries the response was YES. [2021-10-15 20:16:58,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 3228 events. 579/3228 cut-off events. For 2446/2446 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 26992 event pairs, 0 based on Foata normal form. 4/2668 useless extension candidates. Maximal degree in co-relation 5251. Up to 232 conditions per place. [2021-10-15 20:16:58,685 INFO L132 encePairwiseOnDemand]: 802/829 looper letters, 64 selfloop transitions, 52 changer transitions 18/533 dead transitions. [2021-10-15 20:16:58,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 533 transitions, 2274 flow [2021-10-15 20:16:58,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:16:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:16:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4567 transitions. [2021-10-15 20:16:58,691 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7870067206617267 [2021-10-15 20:16:58,692 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4567 transitions. [2021-10-15 20:16:58,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4567 transitions. [2021-10-15 20:16:58,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:58,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4567 transitions. [2021-10-15 20:16:58,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 652.4285714285714) internal successors, (4567), 7 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,705 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,706 INFO L186 Difference]: Start difference. First operand has 454 places, 527 transitions, 1999 flow. Second operand 7 states and 4567 transitions. [2021-10-15 20:16:58,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 533 transitions, 2274 flow [2021-10-15 20:16:58,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 533 transitions, 2260 flow, removed 7 selfloop flow, removed 1 redundant places. [2021-10-15 20:16:58,740 INFO L242 Difference]: Finished difference. Result has 459 places, 511 transitions, 2040 flow [2021-10-15 20:16:58,741 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2040, PETRI_PLACES=459, PETRI_TRANSITIONS=511} [2021-10-15 20:16:58,742 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -108 predicate places. [2021-10-15 20:16:58,742 INFO L470 AbstractCegarLoop]: Abstraction has has 459 places, 511 transitions, 2040 flow [2021-10-15 20:16:58,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 642.3333333333334) internal successors, (3854), 6 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,743 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:58,743 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] [2021-10-15 20:16:58,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-15 20:16:58,743 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:58,744 INFO L82 PathProgramCache]: Analyzing trace with hash -436735014, now seen corresponding path program 1 times [2021-10-15 20:16:58,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:58,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295921602] [2021-10-15 20:16:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:58,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:58,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:58,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295921602] [2021-10-15 20:16:58,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295921602] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:58,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:58,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:16:58,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874980674] [2021-10-15 20:16:58,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:16:58,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:58,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:16:58,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:16:58,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 738 out of 829 [2021-10-15 20:16:58,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 511 transitions, 2040 flow. Second operand has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:58,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:58,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 738 of 829 [2021-10-15 20:16:58,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:59,132 INFO L129 PetriNetUnfolder]: 579/3140 cut-off events. [2021-10-15 20:16:59,133 INFO L130 PetriNetUnfolder]: For 2199/2199 co-relation queries the response was YES. [2021-10-15 20:16:59,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 3140 events. 579/3140 cut-off events. For 2199/2199 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 25937 event pairs, 0 based on Foata normal form. 1/2582 useless extension candidates. Maximal degree in co-relation 4826. Up to 108 conditions per place. [2021-10-15 20:16:59,148 INFO L132 encePairwiseOnDemand]: 823/829 looper letters, 11 selfloop transitions, 2 changer transitions 12/515 dead transitions. [2021-10-15 20:16:59,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 515 transitions, 2089 flow [2021-10-15 20:16:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:16:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:16:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4449 transitions. [2021-10-15 20:16:59,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8944511459589868 [2021-10-15 20:16:59,155 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4449 transitions. [2021-10-15 20:16:59,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4449 transitions. [2021-10-15 20:16:59,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:59,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4449 transitions. [2021-10-15 20:16:59,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 741.5) internal successors, (4449), 6 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:59,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:59,171 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:59,171 INFO L186 Difference]: Start difference. First operand has 459 places, 511 transitions, 2040 flow. Second operand 6 states and 4449 transitions. [2021-10-15 20:16:59,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 515 transitions, 2089 flow [2021-10-15 20:16:59,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 515 transitions, 1969 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-10-15 20:16:59,209 INFO L242 Difference]: Finished difference. Result has 443 places, 502 transitions, 1881 flow [2021-10-15 20:16:59,210 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1881, PETRI_PLACES=443, PETRI_TRANSITIONS=502} [2021-10-15 20:16:59,210 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -124 predicate places. [2021-10-15 20:16:59,210 INFO L470 AbstractCegarLoop]: Abstraction has has 443 places, 502 transitions, 1881 flow [2021-10-15 20:16:59,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 739.4) internal successors, (3697), 5 states have internal predecessors, (3697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:59,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:59,211 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] [2021-10-15 20:16:59,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-15 20:16:59,212 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:59,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1643790660, now seen corresponding path program 1 times [2021-10-15 20:16:59,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:59,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222830363] [2021-10-15 20:16:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:59,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:59,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:59,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222830363] [2021-10-15 20:16:59,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222830363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:59,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:59,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:16:59,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788694879] [2021-10-15 20:16:59,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:16:59,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:16:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:16:59,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 758 out of 829 [2021-10-15 20:16:59,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 502 transitions, 1881 flow. Second operand has 4 states, 4 states have (on average 759.25) internal successors, (3037), 4 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:59,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:59,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 758 of 829 [2021-10-15 20:16:59,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:16:59,599 INFO L129 PetriNetUnfolder]: 576/3108 cut-off events. [2021-10-15 20:16:59,600 INFO L130 PetriNetUnfolder]: For 1762/1762 co-relation queries the response was YES. [2021-10-15 20:16:59,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 3108 events. 576/3108 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 25561 event pairs, 0 based on Foata normal form. 2/2551 useless extension candidates. Maximal degree in co-relation 4539. Up to 108 conditions per place. [2021-10-15 20:16:59,625 INFO L132 encePairwiseOnDemand]: 825/829 looper letters, 9 selfloop transitions, 3 changer transitions 4/504 dead transitions. [2021-10-15 20:16:59,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 504 transitions, 1911 flow [2021-10-15 20:16:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:16:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:16:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3804 transitions. [2021-10-15 20:16:59,631 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9177322074788903 [2021-10-15 20:16:59,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3804 transitions. [2021-10-15 20:16:59,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3804 transitions. [2021-10-15 20:16:59,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:16:59,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3804 transitions. [2021-10-15 20:16:59,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 760.8) internal successors, (3804), 5 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:59,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:59,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 829.0) internal successors, (4974), 6 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) [2021-10-15 20:16:59,650 INFO L186 Difference]: Start difference. First operand has 443 places, 502 transitions, 1881 flow. Second operand 5 states and 3804 transitions. [2021-10-15 20:16:59,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 504 transitions, 1911 flow [2021-10-15 20:16:59,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 504 transitions, 1896 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-10-15 20:16:59,686 INFO L242 Difference]: Finished difference. Result has 436 places, 500 transitions, 1848 flow [2021-10-15 20:16:59,687 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1848, PETRI_PLACES=436, PETRI_TRANSITIONS=500} [2021-10-15 20:16:59,687 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -131 predicate places. [2021-10-15 20:16:59,687 INFO L470 AbstractCegarLoop]: Abstraction has has 436 places, 500 transitions, 1848 flow [2021-10-15 20:16:59,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 759.25) internal successors, (3037), 4 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:59,688 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:16:59,688 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] [2021-10-15 20:16:59,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-15 20:16:59,689 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:16:59,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:16:59,689 INFO L82 PathProgramCache]: Analyzing trace with hash 160458813, now seen corresponding path program 1 times [2021-10-15 20:16:59,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:16:59,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857234818] [2021-10-15 20:16:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:16:59,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:16:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:16:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:16:59,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:16:59,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857234818] [2021-10-15 20:16:59,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857234818] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:16:59,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:16:59,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:16:59,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583379821] [2021-10-15 20:16:59,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:16:59,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:16:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:16:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:16:59,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 660 out of 829 [2021-10-15 20:16:59,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 500 transitions, 1848 flow. Second operand has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:16:59,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:16:59,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 660 of 829 [2021-10-15 20:16:59,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:00,222 INFO L129 PetriNetUnfolder]: 505/2923 cut-off events. [2021-10-15 20:17:00,223 INFO L130 PetriNetUnfolder]: For 1956/1956 co-relation queries the response was YES. [2021-10-15 20:17:00,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4488 conditions, 2923 events. 505/2923 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 24033 event pairs, 0 based on Foata normal form. 6/2420 useless extension candidates. Maximal degree in co-relation 4450. Up to 144 conditions per place. [2021-10-15 20:17:00,241 INFO L132 encePairwiseOnDemand]: 806/829 looper letters, 90 selfloop transitions, 19 changer transitions 0/510 dead transitions. [2021-10-15 20:17:00,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 510 transitions, 2104 flow [2021-10-15 20:17:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:17:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:17:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4049 transitions. [2021-10-15 20:17:00,248 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8140329714515481 [2021-10-15 20:17:00,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4049 transitions. [2021-10-15 20:17:00,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4049 transitions. [2021-10-15 20:17:00,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:00,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4049 transitions. [2021-10-15 20:17:00,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 674.8333333333334) internal successors, (4049), 6 states have internal predecessors, (4049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,261 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,261 INFO L186 Difference]: Start difference. First operand has 436 places, 500 transitions, 1848 flow. Second operand 6 states and 4049 transitions. [2021-10-15 20:17:00,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 510 transitions, 2104 flow [2021-10-15 20:17:00,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 510 transitions, 2096 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-10-15 20:17:00,291 INFO L242 Difference]: Finished difference. Result has 437 places, 499 transitions, 1905 flow [2021-10-15 20:17:00,292 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1905, PETRI_PLACES=437, PETRI_TRANSITIONS=499} [2021-10-15 20:17:00,292 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -130 predicate places. [2021-10-15 20:17:00,292 INFO L470 AbstractCegarLoop]: Abstraction has has 437 places, 499 transitions, 1905 flow [2021-10-15 20:17:00,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,293 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:00,293 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] [2021-10-15 20:17:00,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-15 20:17:00,294 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:17:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash -81749273, now seen corresponding path program 1 times [2021-10-15 20:17:00,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:00,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36037754] [2021-10-15 20:17:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:00,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:00,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:00,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36037754] [2021-10-15 20:17:00,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36037754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:00,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:00,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 20:17:00,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264846478] [2021-10-15 20:17:00,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 20:17:00,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:00,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 20:17:00,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 20:17:00,346 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 728 out of 829 [2021-10-15 20:17:00,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 499 transitions, 1905 flow. Second operand has 6 states, 6 states have (on average 729.5) internal successors, (4377), 6 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:00,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 728 of 829 [2021-10-15 20:17:00,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:00,598 INFO L129 PetriNetUnfolder]: 503/2869 cut-off events. [2021-10-15 20:17:00,598 INFO L130 PetriNetUnfolder]: For 1638/1638 co-relation queries the response was YES. [2021-10-15 20:17:00,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4205 conditions, 2869 events. 503/2869 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 23340 event pairs, 0 based on Foata normal form. 2/2366 useless extension candidates. Maximal degree in co-relation 4166. Up to 103 conditions per place. [2021-10-15 20:17:00,611 INFO L132 encePairwiseOnDemand]: 821/829 looper letters, 8 selfloop transitions, 2 changer transitions 62/489 dead transitions. [2021-10-15 20:17:00,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 489 transitions, 1884 flow [2021-10-15 20:17:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 20:17:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 20:17:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4389 transitions. [2021-10-15 20:17:00,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882388419782871 [2021-10-15 20:17:00,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4389 transitions. [2021-10-15 20:17:00,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4389 transitions. [2021-10-15 20:17:00,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:00,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4389 transitions. [2021-10-15 20:17:00,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 731.5) internal successors, (4389), 6 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,629 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 829.0) internal successors, (5803), 7 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,629 INFO L186 Difference]: Start difference. First operand has 437 places, 499 transitions, 1905 flow. Second operand 6 states and 4389 transitions. [2021-10-15 20:17:00,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 489 transitions, 1884 flow [2021-10-15 20:17:00,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 489 transitions, 1801 flow, removed 10 selfloop flow, removed 6 redundant places. [2021-10-15 20:17:00,655 INFO L242 Difference]: Finished difference. Result has 430 places, 427 transitions, 1639 flow [2021-10-15 20:17:00,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1639, PETRI_PLACES=430, PETRI_TRANSITIONS=427} [2021-10-15 20:17:00,656 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -137 predicate places. [2021-10-15 20:17:00,657 INFO L470 AbstractCegarLoop]: Abstraction has has 430 places, 427 transitions, 1639 flow [2021-10-15 20:17:00,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 729.5) internal successors, (4377), 6 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:00,658 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] [2021-10-15 20:17:00,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-15 20:17:00,658 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:17:00,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:00,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1579373080, now seen corresponding path program 1 times [2021-10-15 20:17:00,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:00,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017138285] [2021-10-15 20:17:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:00,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:00,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:00,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017138285] [2021-10-15 20:17:00,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017138285] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:00,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:00,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 20:17:00,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342691051] [2021-10-15 20:17:00,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:17:00,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:17:00,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:17:00,710 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 635 out of 829 [2021-10-15 20:17:00,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 427 transitions, 1639 flow. Second operand has 7 states, 7 states have (on average 637.1428571428571) internal successors, (4460), 7 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:00,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:00,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 635 of 829 [2021-10-15 20:17:00,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:01,110 INFO L129 PetriNetUnfolder]: 488/2808 cut-off events. [2021-10-15 20:17:01,110 INFO L130 PetriNetUnfolder]: For 1047/1047 co-relation queries the response was YES. [2021-10-15 20:17:01,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4470 conditions, 2808 events. 488/2808 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 22881 event pairs, 0 based on Foata normal form. 12/2332 useless extension candidates. Maximal degree in co-relation 4434. Up to 177 conditions per place. [2021-10-15 20:17:01,122 INFO L132 encePairwiseOnDemand]: 797/829 looper letters, 38 selfloop transitions, 39 changer transitions 106/431 dead transitions. [2021-10-15 20:17:01,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 431 transitions, 1889 flow [2021-10-15 20:17:01,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 20:17:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 20:17:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5160 transitions. [2021-10-15 20:17:01,128 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7780458383594693 [2021-10-15 20:17:01,129 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5160 transitions. [2021-10-15 20:17:01,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5160 transitions. [2021-10-15 20:17:01,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:01,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5160 transitions. [2021-10-15 20:17:01,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 645.0) internal successors, (5160), 8 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 829.0) internal successors, (7461), 9 states have internal predecessors, (7461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,145 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 829.0) internal successors, (7461), 9 states have internal predecessors, (7461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,146 INFO L186 Difference]: Start difference. First operand has 430 places, 427 transitions, 1639 flow. Second operand 8 states and 5160 transitions. [2021-10-15 20:17:01,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 431 transitions, 1889 flow [2021-10-15 20:17:01,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 431 transitions, 1886 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 20:17:01,164 INFO L242 Difference]: Finished difference. Result has 384 places, 322 transitions, 1322 flow [2021-10-15 20:17:01,165 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1322, PETRI_PLACES=384, PETRI_TRANSITIONS=322} [2021-10-15 20:17:01,165 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -183 predicate places. [2021-10-15 20:17:01,165 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 322 transitions, 1322 flow [2021-10-15 20:17:01,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 637.1428571428571) internal successors, (4460), 7 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,166 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:01,166 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] [2021-10-15 20:17:01,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-15 20:17:01,167 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:17:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1536215993, now seen corresponding path program 1 times [2021-10-15 20:17:01,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:01,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081098222] [2021-10-15 20:17:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:01,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:01,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:01,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081098222] [2021-10-15 20:17:01,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081098222] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:01,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:01,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 20:17:01,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97195612] [2021-10-15 20:17:01,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 20:17:01,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 20:17:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 20:17:01,230 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 660 out of 829 [2021-10-15 20:17:01,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 322 transitions, 1322 flow. Second operand has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:01,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 660 of 829 [2021-10-15 20:17:01,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:01,519 INFO L129 PetriNetUnfolder]: 440/2354 cut-off events. [2021-10-15 20:17:01,520 INFO L130 PetriNetUnfolder]: For 930/930 co-relation queries the response was YES. [2021-10-15 20:17:01,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3573 conditions, 2354 events. 440/2354 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 18177 event pairs, 0 based on Foata normal form. 1/1921 useless extension candidates. Maximal degree in co-relation 3535. Up to 96 conditions per place. [2021-10-15 20:17:01,536 INFO L132 encePairwiseOnDemand]: 818/829 looper letters, 58 selfloop transitions, 12 changer transitions 0/333 dead transitions. [2021-10-15 20:17:01,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 333 transitions, 1553 flow [2021-10-15 20:17:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 20:17:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 20:17:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4674 transitions. [2021-10-15 20:17:01,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.805445459245218 [2021-10-15 20:17:01,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4674 transitions. [2021-10-15 20:17:01,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4674 transitions. [2021-10-15 20:17:01,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:01,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4674 transitions. [2021-10-15 20:17:01,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 667.7142857142857) internal successors, (4674), 7 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,556 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 829.0) internal successors, (6632), 8 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,556 INFO L186 Difference]: Start difference. First operand has 384 places, 322 transitions, 1322 flow. Second operand 7 states and 4674 transitions. [2021-10-15 20:17:01,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 333 transitions, 1553 flow [2021-10-15 20:17:01,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 333 transitions, 1440 flow, removed 2 selfloop flow, removed 11 redundant places. [2021-10-15 20:17:01,571 INFO L242 Difference]: Finished difference. Result has 304 places, 323 transitions, 1262 flow [2021-10-15 20:17:01,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1262, PETRI_PLACES=304, PETRI_TRANSITIONS=323} [2021-10-15 20:17:01,572 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -263 predicate places. [2021-10-15 20:17:01,573 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 323 transitions, 1262 flow [2021-10-15 20:17:01,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:01,574 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] [2021-10-15 20:17:01,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-15 20:17:01,574 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:17:01,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:01,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1318642262, now seen corresponding path program 1 times [2021-10-15 20:17:01,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:01,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206192678] [2021-10-15 20:17:01,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:01,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:01,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:01,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206192678] [2021-10-15 20:17:01,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206192678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:01,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:01,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:17:01,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568709730] [2021-10-15 20:17:01,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:17:01,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:01,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:17:01,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:17:01,608 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 583 out of 829 [2021-10-15 20:17:01,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 323 transitions, 1262 flow. Second operand has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:01,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 583 of 829 [2021-10-15 20:17:01,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:01,830 INFO L129 PetriNetUnfolder]: 334/1920 cut-off events. [2021-10-15 20:17:01,831 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2021-10-15 20:17:01,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 1920 events. 334/1920 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 13898 event pairs, 0 based on Foata normal form. 6/1586 useless extension candidates. Maximal degree in co-relation 3060. Up to 291 conditions per place. [2021-10-15 20:17:01,843 INFO L132 encePairwiseOnDemand]: 817/829 looper letters, 51 selfloop transitions, 10 changer transitions 0/310 dead transitions. [2021-10-15 20:17:01,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 310 transitions, 1315 flow [2021-10-15 20:17:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:17:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:17:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1804 transitions. [2021-10-15 20:17:01,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7253719340570969 [2021-10-15 20:17:01,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1804 transitions. [2021-10-15 20:17:01,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1804 transitions. [2021-10-15 20:17:01,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:01,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1804 transitions. [2021-10-15 20:17:01,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 601.3333333333334) internal successors, (1804), 3 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,852 INFO L186 Difference]: Start difference. First operand has 304 places, 323 transitions, 1262 flow. Second operand 3 states and 1804 transitions. [2021-10-15 20:17:01,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 310 transitions, 1315 flow [2021-10-15 20:17:01,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 310 transitions, 1264 flow, removed 5 selfloop flow, removed 4 redundant places. [2021-10-15 20:17:01,864 INFO L242 Difference]: Finished difference. Result has 297 places, 310 transitions, 1176 flow [2021-10-15 20:17:01,865 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1176, PETRI_PLACES=297, PETRI_TRANSITIONS=310} [2021-10-15 20:17:01,865 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -270 predicate places. [2021-10-15 20:17:01,865 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 310 transitions, 1176 flow [2021-10-15 20:17:01,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 587.0) internal successors, (1761), 3 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,866 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:01,866 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] [2021-10-15 20:17:01,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-15 20:17:01,866 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:17:01,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:01,867 INFO L82 PathProgramCache]: Analyzing trace with hash -624384568, now seen corresponding path program 1 times [2021-10-15 20:17:01,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:01,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963280827] [2021-10-15 20:17:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:01,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:01,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:01,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963280827] [2021-10-15 20:17:01,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963280827] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:01,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:01,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 20:17:01,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516077724] [2021-10-15 20:17:01,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 20:17:01,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 20:17:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 20:17:01,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 637 out of 829 [2021-10-15 20:17:01,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 310 transitions, 1176 flow. Second operand has 7 states, 7 states have (on average 639.0) internal successors, (4473), 7 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:01,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:01,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 637 of 829 [2021-10-15 20:17:01,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:02,244 INFO L129 PetriNetUnfolder]: 334/1912 cut-off events. [2021-10-15 20:17:02,244 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2021-10-15 20:17:02,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 1912 events. 334/1912 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13809 event pairs, 0 based on Foata normal form. 4/1576 useless extension candidates. Maximal degree in co-relation 2972. Up to 72 conditions per place. [2021-10-15 20:17:02,257 INFO L132 encePairwiseOnDemand]: 805/829 looper letters, 51 selfloop transitions, 37 changer transitions 2/325 dead transitions. [2021-10-15 20:17:02,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 325 transitions, 1406 flow [2021-10-15 20:17:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 20:17:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 20:17:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 6437 transitions. [2021-10-15 20:17:02,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7764776839565742 [2021-10-15 20:17:02,264 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 6437 transitions. [2021-10-15 20:17:02,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 6437 transitions. [2021-10-15 20:17:02,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:02,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 6437 transitions. [2021-10-15 20:17:02,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 643.7) internal successors, (6437), 10 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 829.0) internal successors, (9119), 11 states have internal predecessors, (9119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,284 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 829.0) internal successors, (9119), 11 states have internal predecessors, (9119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,284 INFO L186 Difference]: Start difference. First operand has 297 places, 310 transitions, 1176 flow. Second operand 10 states and 6437 transitions. [2021-10-15 20:17:02,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 325 transitions, 1406 flow [2021-10-15 20:17:02,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 325 transitions, 1372 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-15 20:17:02,298 INFO L242 Difference]: Finished difference. Result has 309 places, 316 transitions, 1290 flow [2021-10-15 20:17:02,298 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=309, PETRI_TRANSITIONS=316} [2021-10-15 20:17:02,298 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -258 predicate places. [2021-10-15 20:17:02,299 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 316 transitions, 1290 flow [2021-10-15 20:17:02,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 639.0) internal successors, (4473), 7 states have internal predecessors, (4473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,300 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:02,300 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] [2021-10-15 20:17:02,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-15 20:17:02,300 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:17:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:02,301 INFO L82 PathProgramCache]: Analyzing trace with hash -97808277, now seen corresponding path program 1 times [2021-10-15 20:17:02,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:02,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262419848] [2021-10-15 20:17:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:02,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:17:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:17:02,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:17:02,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262419848] [2021-10-15 20:17:02,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262419848] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:17:02,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:17:02,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 20:17:02,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888451540] [2021-10-15 20:17:02,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 20:17:02,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:17:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 20:17:02,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 20:17:02,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 760 out of 829 [2021-10-15 20:17:02,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 316 transitions, 1290 flow. Second operand has 3 states, 3 states have (on average 761.6666666666666) internal successors, (2285), 3 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:17:02,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 760 of 829 [2021-10-15 20:17:02,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:17:02,547 INFO L129 PetriNetUnfolder]: 394/2158 cut-off events. [2021-10-15 20:17:02,547 INFO L130 PetriNetUnfolder]: For 661/661 co-relation queries the response was YES. [2021-10-15 20:17:02,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 2158 events. 394/2158 cut-off events. For 661/661 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16186 event pairs, 0 based on Foata normal form. 6/1752 useless extension candidates. Maximal degree in co-relation 3123. Up to 96 conditions per place. [2021-10-15 20:17:02,555 INFO L132 encePairwiseOnDemand]: 824/829 looper letters, 6 selfloop transitions, 3 changer transitions 0/313 dead transitions. [2021-10-15 20:17:02,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 313 transitions, 1293 flow [2021-10-15 20:17:02,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 20:17:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 20:17:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2291 transitions. [2021-10-15 20:17:02,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9211901889827101 [2021-10-15 20:17:02,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2291 transitions. [2021-10-15 20:17:02,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2291 transitions. [2021-10-15 20:17:02,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:17:02,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2291 transitions. [2021-10-15 20:17:02,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 763.6666666666666) internal successors, (2291), 3 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 829.0) internal successors, (3316), 4 states have internal predecessors, (3316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,564 INFO L186 Difference]: Start difference. First operand has 309 places, 316 transitions, 1290 flow. Second operand 3 states and 2291 transitions. [2021-10-15 20:17:02,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 313 transitions, 1293 flow [2021-10-15 20:17:02,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 313 transitions, 1285 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-15 20:17:02,579 INFO L242 Difference]: Finished difference. Result has 309 places, 313 transitions, 1273 flow [2021-10-15 20:17:02,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=829, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1273, PETRI_PLACES=309, PETRI_TRANSITIONS=313} [2021-10-15 20:17:02,580 INFO L334 CegarLoopForPetriNet]: 567 programPoint places, -258 predicate places. [2021-10-15 20:17:02,580 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 313 transitions, 1273 flow [2021-10-15 20:17:02,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 761.6666666666666) internal successors, (2285), 3 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:17:02,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:17:02,581 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] [2021-10-15 20:17:02,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-15 20:17:02,581 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-10-15 20:17:02,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:17:02,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1347026648, now seen corresponding path program 1 times [2021-10-15 20:17:02,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:17:02,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692929783] [2021-10-15 20:17:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:17:02,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:17:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:17:02,600 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:17:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:17:02,662 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:17:02,662 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 20:17:02,663 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,667 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,668 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,669 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,670 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,671 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,673 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,674 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,675 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:17:02,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-15 20:17:02,683 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:17:02,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:17:02 BoogieIcfgContainer [2021-10-15 20:17:02,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:17:02,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:17:02,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:17:02,798 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:17:02,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:16:40" (3/4) ... [2021-10-15 20:17:02,801 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 20:17:02,941 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:17:02,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:17:02,943 INFO L168 Benchmark]: Toolchain (without parser) took 24822.62 ms. Allocated memory was 104.9 MB in the beginning and 822.1 MB in the end (delta: 717.2 MB). Free memory was 71.0 MB in the beginning and 650.5 MB in the end (delta: -579.5 MB). Peak memory consumption was 137.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:02,944 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 57.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:17:02,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.21 ms. Allocated memory is still 104.9 MB. Free memory was 70.7 MB in the beginning and 63.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:02,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 138.88 ms. Allocated memory is still 104.9 MB. Free memory was 63.9 MB in the beginning and 53.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:02,945 INFO L168 Benchmark]: Boogie Preprocessor took 165.20 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 53.3 MB in the beginning and 100.6 MB in the end (delta: -47.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:02,945 INFO L168 Benchmark]: RCFGBuilder took 1775.93 ms. Allocated memory is still 132.1 MB. Free memory was 100.6 MB in the beginning and 88.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:02,946 INFO L168 Benchmark]: TraceAbstraction took 21951.31 ms. Allocated memory was 132.1 MB in the beginning and 822.1 MB in the end (delta: 690.0 MB). Free memory was 88.4 MB in the beginning and 667.3 MB in the end (delta: -578.9 MB). Peak memory consumption was 111.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:02,946 INFO L168 Benchmark]: Witness Printer took 143.45 ms. Allocated memory is still 822.1 MB. Free memory was 667.3 MB in the beginning and 650.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-15 20:17:02,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 104.9 MB. Free memory is still 57.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 640.21 ms. Allocated memory is still 104.9 MB. Free memory was 70.7 MB in the beginning and 63.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 138.88 ms. Allocated memory is still 104.9 MB. Free memory was 63.9 MB in the beginning and 53.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 165.20 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 53.3 MB in the beginning and 100.6 MB in the end (delta: -47.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1775.93 ms. Allocated memory is still 132.1 MB. Free memory was 100.6 MB in the beginning and 88.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21951.31 ms. Allocated memory was 132.1 MB in the beginning and 822.1 MB in the end (delta: 690.0 MB). Free memory was 88.4 MB in the beginning and 667.3 MB in the end (delta: -578.9 MB). Peak memory consumption was 111.6 MB. Max. memory is 16.1 GB. * Witness Printer took 143.45 ms. Allocated memory is still 822.1 MB. Free memory was 667.3 MB in the beginning and 650.5 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1627]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int FloppyThread ; [L43] int KernelMode ; [L44] int Suspended ; [L45] int Executive ; [L46] int DiskController ; [L47] int FloppyDiskPeripheral ; [L48] int FlConfigCallBack ; [L49] int MaximumInterfaceType ; [L50] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L51] int myStatus ; [L52] int s ; [L53] int UNLOADED ; [L54] int NP ; [L55] int DC ; [L56] int SKIP1 ; [L57] int SKIP2 ; [L58] int MPR1 ; [L59] int MPR3 ; [L60] int IPC ; [L61] int pended ; [L62] int compRegistered ; [L63] int lowerDriverReturn ; [L64] int setEventCalled ; [L65] int customIrp ; [L88] int PagingReferenceCount = 0; [L89] int PagingMutex = 0; VAL [compRegistered=0, customIrp=0, DC=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=0, MPR3=0, myStatus=0, NP=0, PagingMutex=0, PagingReferenceCount=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L668] int status ; [L669] int irp = __VERIFIER_nondet_int() ; [L670] int pirp ; [L671] int pirp__IoStatus__Status ; [L672] int irp_choice = __VERIFIER_nondet_int() ; [L673] int devobj = __VERIFIER_nondet_int() ; [L674] int __cil_tmp8 ; [L676] FloppyThread = 0 [L677] KernelMode = 0 [L678] Suspended = 0 [L679] Executive = 0 [L680] DiskController = 0 [L681] FloppyDiskPeripheral = 0 [L682] FlConfigCallBack = 0 [L683] MaximumInterfaceType = 0 [L684] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L685] myStatus = 0 [L686] s = 0 [L687] UNLOADED = 0 [L688] NP = 0 [L689] DC = 0 [L690] SKIP1 = 0 [L691] SKIP2 = 0 [L692] MPR1 = 0 [L693] MPR3 = 0 [L694] IPC = 0 [L695] pended = 0 [L696] compRegistered = 0 [L697] lowerDriverReturn = 0 [L698] setEventCalled = 0 [L699] customIrp = 0 [L703] status = 0 [L704] pirp = irp [L71] UNLOADED = 0 [L72] NP = 1 [L73] DC = 2 [L74] SKIP1 = 3 [L75] SKIP2 = 4 [L76] MPR1 = 5 [L77] MPR3 = 6 [L78] IPC = 7 [L79] s = UNLOADED [L80] pended = 0 [L81] compRegistered = 0 [L82] lowerDriverReturn = 0 [L83] setEventCalled = 0 [L84] customIrp = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L707] COND TRUE status >= 0 [L708] s = NP [L709] customIrp = 0 [L710] setEventCalled = customIrp [L711] lowerDriverReturn = setEventCalled [L712] compRegistered = lowerDriverReturn [L713] pended = compRegistered [L714] pirp__IoStatus__Status = 0 [L715] myStatus = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L716] COND TRUE irp_choice == 0 [L717] pirp__IoStatus__Status = -1073741637 [L718] myStatus = -1073741637 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L658] s = NP [L659] pended = 0 [L660] compRegistered = 0 [L661] lowerDriverReturn = 0 [L662] setEventCalled = 0 [L663] customIrp = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L724] COND FALSE !(status < 0) [L728] int tmp_ndt_1; [L729] tmp_ndt_1 = __VERIFIER_nondet_int() [L730] COND FALSE !(tmp_ndt_1 == 0) [L733] int tmp_ndt_2; [L734] tmp_ndt_2 = __VERIFIER_nondet_int() [L735] COND FALSE !(tmp_ndt_2 == 1) [L738] int tmp_ndt_3; [L739] tmp_ndt_3 = __VERIFIER_nondet_int() [L740] COND FALSE !(tmp_ndt_3 == 2) [L743] int tmp_ndt_4; [L744] tmp_ndt_4 = __VERIFIER_nondet_int() [L745] COND TRUE tmp_ndt_4 == 3 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L161] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L162] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L163] int Irp__IoStatus__Information ; [L164] int Irp__IoStatus__Status ; [L165] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L166] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L167] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L168] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L169] int disketteExtension__HoldNewRequests ; [L170] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L171] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L172] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L173] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L174] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L175] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L176] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L177] int irpSp ; [L178] int disketteExtension ; [L179] int ntStatus ; [L180] int doneEvent = __VERIFIER_nondet_int() ; [L181] int irpSp___0 ; [L182] int nextIrpSp ; [L183] int nextIrpSp__Control ; [L184] int irpSp___1 ; [L185] int irpSp__Context ; [L186] int irpSp__Control ; [L187] long __cil_tmp29 ; [L188] long __cil_tmp30 ; [L191] ntStatus = 0 [L192] PagingReferenceCount ++ VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L193] COND TRUE PagingReferenceCount == 1 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L196] disketteExtension = DeviceObject__DeviceExtension [L197] irpSp = Irp__Tail__Overlay__CurrentStackLocation VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L198] COND FALSE !(\read(disketteExtension__IsRemoved)) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L207] COND FALSE !(irpSp__MinorFunction == 0) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L210] COND TRUE irpSp__MinorFunction == 5 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L236] COND TRUE irpSp__MinorFunction == 5 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L239] COND FALSE !(! disketteExtension__IsStarted) [L255] disketteExtension__HoldNewRequests = 1 [L98] int status ; [L99] int threadHandle = __VERIFIER_nondet_int() ; [L100] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L101] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L102] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L103] int Irp__IoStatus__Status ; [L104] int Irp__IoStatus__Information ; [L105] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L106] int ObjAttributes = __VERIFIER_nondet_int() ; [L107] int __cil_tmp12 ; [L108] int __cil_tmp13 ; VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L111] COND FALSE !(DisketteExtension__PoweringDown == 1) [L117] DisketteExtension__ThreadReferenceCount ++ VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L118] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L150] COND TRUE pended == 0 [L151] pended = 1 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L157] return (259); VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L256] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L259] __cil_tmp29 = (long )ntStatus VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L260] COND TRUE __cil_tmp29 == 259L [L1066] COND FALSE !(s == MPR3) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1075] COND FALSE !(customIrp == 1) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1079] COND FALSE !(s == MPR3) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1086] int tmp_ndt_12; [L1087] tmp_ndt_12 = __VERIFIER_nondet_int() [L1088] COND TRUE tmp_ndt_12 == 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1094] return (0); VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L265] COND FALSE !(disketteExtension__FloppyThread != 0) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L268] disketteExtension__FloppyThread = 0 [L269] Irp__IoStatus__Status = 0 [L270] myStatus = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L271] COND TRUE s == NP [L272] s = SKIP1 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L279] Irp__CurrentLocation ++ [L280] Irp__Tail__Overlay__CurrentStackLocation ++ [L968] int returnVal2 ; [L969] int compRetStatus1 ; [L970] int lcontext = __VERIFIER_nondet_int() ; [L971] unsigned long __cil_tmp7 ; VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L974] COND FALSE !(\read(compRegistered)) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L987] int tmp_ndt_10; [L988] tmp_ndt_10 = __VERIFIER_nondet_int() [L989] COND TRUE tmp_ndt_10 == 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1000] returnVal2 = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1013] COND FALSE !(s == NP) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1017] COND FALSE !(s == MPR1) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1026] COND TRUE s == SKIP1 [L1027] s = SKIP2 [L1028] lowerDriverReturn = returnVal2 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1036] return (returnVal2); VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L281] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L427] PagingReferenceCount -- VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L428] COND TRUE PagingReferenceCount == 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L431] return (ntStatus); VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L767] status = FloppyPnp(devobj, pirp) [L780] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L781] COND FALSE !(s == NP) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L788] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L789] COND FALSE !(s == MPR3) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L796] COND TRUE s != UNLOADED VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L797] COND TRUE status != -1 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L798] COND FALSE !(s != SKIP2) VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L812] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L813] COND TRUE status != 259 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1627] reach_error() VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1627]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 572 locations, 54 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21778.4ms, OverallIterations: 50, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 18158.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 205.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2207 SDtfs, 1931 SDslu, 1477 SDs, 0 SdLazy, 4277 SolverSat, 629 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3112.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 789.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2140occurred in iteration=33, InterpolantAutomatonStates: 229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 182.1ms SsaConstructionTime, 670.6ms SatisfiabilityAnalysisTime, 1834.6ms InterpolantComputationTime, 1633 NumberOfCodeBlocks, 1633 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1526 ConstructedInterpolants, 0 QuantifiedInterpolants, 3482 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 49 InterpolantComputations, 49 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-15 20:17:03,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc2b40b6-ddfa-467d-8331-a9d33f6a1c08/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...