./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.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_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/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_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/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_f5c6390e-68de-4030-abaa-6dfb38d4f16f/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 0e235262504777831892e647a6e549c2cd69296d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:11:15,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:11:15,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:11:15,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:11:15,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:11:15,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:11:15,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:11:15,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:11:15,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:11:15,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:11:15,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:11:15,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:11:15,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:11:15,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:11:15,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:11:15,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:11:15,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:11:15,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:11:15,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:11:15,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:11:15,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:11:15,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:11:15,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:11:15,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:11:15,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:11:15,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:11:15,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:11:15,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:11:15,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:11:15,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:11:15,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:11:15,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:11:15,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:11:15,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:11:15,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:11:15,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:11:15,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:11:15,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:11:15,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:11:15,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:11:15,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:11:15,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:11:15,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:11:15,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:11:15,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:11:15,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:11:15,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:11:15,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:11:15,841 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:11:15,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:11:15,842 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:11:15,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:11:15,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:11:15,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:11:15,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:11:15,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:11:15,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:11:15,845 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:11:15,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:11:15,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:11:15,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:11:15,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:11:15,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:11:15,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:11:15,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:11:15,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:11:15,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:11:15,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:11:15,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:11:15,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:11:15,849 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:11:15,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:11:15,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:11:15,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:11:15,850 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_f5c6390e-68de-4030-abaa-6dfb38d4f16f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e235262504777831892e647a6e549c2cd69296d [2021-10-15 19:11:16,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:11:16,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:11:16,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:11:16,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:11:16,258 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:11:16,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2021-10-15 19:11:16,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/data/fde46e3e4/df9fd8df6f384c2f9e7980aeb1005963/FLAG8baed9c27 [2021-10-15 19:11:17,039 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:11:17,040 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c [2021-10-15 19:11:17,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/data/fde46e3e4/df9fd8df6f384c2f9e7980aeb1005963/FLAG8baed9c27 [2021-10-15 19:11:17,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/data/fde46e3e4/df9fd8df6f384c2f9e7980aeb1005963 [2021-10-15 19:11:17,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:11:17,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:11:17,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:11:17,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:11:17,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:11:17,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:11:17" (1/1) ... [2021-10-15 19:11:17,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408640cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:17, skipping insertion in model container [2021-10-15 19:11:17,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:11:17" (1/1) ... [2021-10-15 19:11:17,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:11:17,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:11:17,800 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_f5c6390e-68de-4030-abaa-6dfb38d4f16f/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c[7381,7394] [2021-10-15 19:11:17,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:11:17,959 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:11:18,041 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_f5c6390e-68de-4030-abaa-6dfb38d4f16f/sv-benchmarks/c/product-lines/minepump_spec3_product61.cil.c[7381,7394] [2021-10-15 19:11:18,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:11:18,139 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:11:18,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18 WrapperNode [2021-10-15 19:11:18,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:11:18,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:11:18,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:11:18,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:11:18,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:11:18,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:11:18,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:11:18,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:11:18,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:11:18,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:11:18,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:11:18,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:11:18,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (1/1) ... [2021-10-15 19:11:18,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:11:18,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:18,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:11:18,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:11:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:11:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:11:18,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:11:18,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:11:20,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:11:20,213 INFO L299 CfgBuilder]: Removed 354 assume(true) statements. [2021-10-15 19:11:20,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:11:20 BoogieIcfgContainer [2021-10-15 19:11:20,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:11:20,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:11:20,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:11:20,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:11:20,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:11:17" (1/3) ... [2021-10-15 19:11:20,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7752cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:11:20, skipping insertion in model container [2021-10-15 19:11:20,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:11:18" (2/3) ... [2021-10-15 19:11:20,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7752cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:11:20, skipping insertion in model container [2021-10-15 19:11:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:11:20" (3/3) ... [2021-10-15 19:11:20,234 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product61.cil.c [2021-10-15 19:11:20,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:11:20,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 19:11:20,332 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:11:20,344 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 19:11:20,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 19:11:20,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 231 places, 345 transitions, 690 flow [2021-10-15 19:11:20,505 INFO L129 PetriNetUnfolder]: 115/345 cut-off events. [2021-10-15 19:11:20,510 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:11:20,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 345 events. 115/345 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1296 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2021-10-15 19:11:20,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 345 transitions, 690 flow [2021-10-15 19:11:20,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 338 transitions, 676 flow [2021-10-15 19:11:20,564 INFO L129 PetriNetUnfolder]: 30/101 cut-off events. [2021-10-15 19:11:20,564 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:11:20,565 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:20,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:11:20,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:20,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:20,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1389216571, now seen corresponding path program 1 times [2021-10-15 19:11:20,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:20,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352111393] [2021-10-15 19:11:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:20,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:20,963 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 19:11:20,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:20,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352111393] [2021-10-15 19:11:20,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352111393] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:20,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:20,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:11:20,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045678271] [2021-10-15 19:11:20,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:11:20,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:11:21,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:11:21,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 345 [2021-10-15 19:11:21,034 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 338 transitions, 676 flow. Second operand has 2 states, 2 states have (on average 338.5) internal successors, (677), 2 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 19:11:21,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:21,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 345 [2021-10-15 19:11:21,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:21,147 INFO L129 PetriNetUnfolder]: 107/333 cut-off events. [2021-10-15 19:11:21,149 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:11:21,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 333 events. 107/333 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1238 event pairs, 0 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 333. Up to 20 conditions per place. [2021-10-15 19:11:21,161 INFO L132 encePairwiseOnDemand]: 340/345 looper letters, 0 selfloop transitions, 0 changer transitions 0/333 dead transitions. [2021-10-15 19:11:21,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 333 transitions, 666 flow [2021-10-15 19:11:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:11:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:11:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 681 transitions. [2021-10-15 19:11:21,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9869565217391304 [2021-10-15 19:11:21,203 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 681 transitions. [2021-10-15 19:11:21,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 681 transitions. [2021-10-15 19:11:21,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:21,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 681 transitions. [2021-10-15 19:11:21,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 340.5) internal successors, (681), 2 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 19:11:21,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:21,249 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:21,253 INFO L186 Difference]: Start difference. First operand has 227 places, 338 transitions, 676 flow. Second operand 2 states and 681 transitions. [2021-10-15 19:11:21,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 333 transitions, 666 flow [2021-10-15 19:11:21,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 333 transitions, 666 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:11:21,284 INFO L242 Difference]: Finished difference. Result has 228 places, 333 transitions, 666 flow [2021-10-15 19:11:21,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=666, PETRI_PLACES=228, PETRI_TRANSITIONS=333} [2021-10-15 19:11:21,290 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, 1 predicate places. [2021-10-15 19:11:21,291 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 333 transitions, 666 flow [2021-10-15 19:11:21,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 338.5) internal successors, (677), 2 states have internal predecessors, (677), 0 states have call successors, (0), 0 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 19:11:21,293 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:21,294 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:11:21,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:11:21,296 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:21,298 INFO L82 PathProgramCache]: Analyzing trace with hash 478185818, now seen corresponding path program 1 times [2021-10-15 19:11:21,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:21,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534706029] [2021-10-15 19:11:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:21,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:21,599 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 19:11:21,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:21,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534706029] [2021-10-15 19:11:21,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534706029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:21,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:21,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:11:21,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105785255] [2021-10-15 19:11:21,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:11:21,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:21,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:11:21,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:11:21,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 345 [2021-10-15 19:11:21,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 333 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 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 19:11:21,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:21,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 345 [2021-10-15 19:11:21,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:21,656 INFO L129 PetriNetUnfolder]: 40/124 cut-off events. [2021-10-15 19:11:21,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:11:21,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 40/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 126. Up to 20 conditions per place. [2021-10-15 19:11:21,662 INFO L132 encePairwiseOnDemand]: 343/345 looper letters, 1 selfloop transitions, 1 changer transitions 0/124 dead transitions. [2021-10-15 19:11:21,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 124 transitions, 252 flow [2021-10-15 19:11:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:11:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:11:21,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2021-10-15 19:11:21,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9739130434782609 [2021-10-15 19:11:21,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2021-10-15 19:11:21,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2021-10-15 19:11:21,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:21,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2021-10-15 19:11:21,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 19:11:21,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:21,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:21,693 INFO L186 Difference]: Start difference. First operand has 228 places, 333 transitions, 666 flow. Second operand 3 states and 1008 transitions. [2021-10-15 19:11:21,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 124 transitions, 252 flow [2021-10-15 19:11:21,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:11:21,704 INFO L242 Difference]: Finished difference. Result has 88 places, 124 transitions, 250 flow [2021-10-15 19:11:21,706 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=88, PETRI_TRANSITIONS=124} [2021-10-15 19:11:21,715 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -139 predicate places. [2021-10-15 19:11:21,715 INFO L470 AbstractCegarLoop]: Abstraction has has 88 places, 124 transitions, 250 flow [2021-10-15 19:11:21,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 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 19:11:21,717 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:21,718 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:11:21,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:11:21,719 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1017898692, now seen corresponding path program 1 times [2021-10-15 19:11:21,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:21,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422370033] [2021-10-15 19:11:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:21,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:21,948 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 19:11:21,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:21,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422370033] [2021-10-15 19:11:21,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422370033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:21,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:21,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:11:21,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870602958] [2021-10-15 19:11:21,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:11:21,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:11:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:11:21,964 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 345 [2021-10-15 19:11:21,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 124 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 327.0) internal successors, (1962), 6 states have internal predecessors, (1962), 0 states have call successors, (0), 0 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 19:11:21,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:21,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 345 [2021-10-15 19:11:21,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:22,209 INFO L129 PetriNetUnfolder]: 39/123 cut-off events. [2021-10-15 19:11:22,210 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:11:22,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 123 events. 39/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 226 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 130. Up to 19 conditions per place. [2021-10-15 19:11:22,211 INFO L132 encePairwiseOnDemand]: 341/345 looper letters, 3 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2021-10-15 19:11:22,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 123 transitions, 260 flow [2021-10-15 19:11:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:11:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:11:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1637 transitions. [2021-10-15 19:11:22,220 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9489855072463768 [2021-10-15 19:11:22,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1637 transitions. [2021-10-15 19:11:22,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1637 transitions. [2021-10-15 19:11:22,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:22,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1637 transitions. [2021-10-15 19:11:22,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 327.4) internal successors, (1637), 5 states have internal predecessors, (1637), 0 states have call successors, (0), 0 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 19:11:22,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 19:11:22,242 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 19:11:22,242 INFO L186 Difference]: Start difference. First operand has 88 places, 124 transitions, 250 flow. Second operand 5 states and 1637 transitions. [2021-10-15 19:11:22,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 123 transitions, 260 flow [2021-10-15 19:11:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 259 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:11:22,249 INFO L242 Difference]: Finished difference. Result has 91 places, 123 transitions, 253 flow [2021-10-15 19:11:22,249 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=91, PETRI_TRANSITIONS=123} [2021-10-15 19:11:22,250 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -136 predicate places. [2021-10-15 19:11:22,250 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 123 transitions, 253 flow [2021-10-15 19:11:22,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 327.0) internal successors, (1962), 6 states have internal predecessors, (1962), 0 states have call successors, (0), 0 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 19:11:22,253 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:22,254 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 19:11:22,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:11:22,254 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:22,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:22,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1367117657, now seen corresponding path program 1 times [2021-10-15 19:11:22,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:22,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465082927] [2021-10-15 19:11:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:22,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:22,342 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 19:11:22,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:22,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465082927] [2021-10-15 19:11:22,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465082927] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:22,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:22,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:11:22,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699211705] [2021-10-15 19:11:22,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:11:22,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:11:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:11:22,362 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 345 [2021-10-15 19:11:22,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 123 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 19:11:22,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:22,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 345 [2021-10-15 19:11:22,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:22,438 INFO L129 PetriNetUnfolder]: 37/129 cut-off events. [2021-10-15 19:11:22,438 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:11:22,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 129 events. 37/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 103 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 154. Up to 13 conditions per place. [2021-10-15 19:11:22,440 INFO L132 encePairwiseOnDemand]: 330/345 looper letters, 11 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2021-10-15 19:11:22,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 251 flow [2021-10-15 19:11:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:11:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:11:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 821 transitions. [2021-10-15 19:11:22,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7932367149758454 [2021-10-15 19:11:22,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 821 transitions. [2021-10-15 19:11:22,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 821 transitions. [2021-10-15 19:11:22,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:22,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 821 transitions. [2021-10-15 19:11:22,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 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 19:11:22,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:22,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:22,465 INFO L186 Difference]: Start difference. First operand has 91 places, 123 transitions, 253 flow. Second operand 3 states and 821 transitions. [2021-10-15 19:11:22,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 251 flow [2021-10-15 19:11:22,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:11:22,472 INFO L242 Difference]: Finished difference. Result has 77 places, 100 transitions, 250 flow [2021-10-15 19:11:22,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=77, PETRI_TRANSITIONS=100} [2021-10-15 19:11:22,473 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -150 predicate places. [2021-10-15 19:11:22,474 INFO L470 AbstractCegarLoop]: Abstraction has has 77 places, 100 transitions, 250 flow [2021-10-15 19:11:22,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 19:11:22,475 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:22,475 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 19:11:22,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:11:22,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:22,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:22,477 INFO L82 PathProgramCache]: Analyzing trace with hash -586337815, now seen corresponding path program 1 times [2021-10-15 19:11:22,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:22,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278772677] [2021-10-15 19:11:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:22,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:22,572 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 19:11:22,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:22,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278772677] [2021-10-15 19:11:22,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278772677] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:22,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:22,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:11:22,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057980112] [2021-10-15 19:11:22,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:11:22,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:11:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:11:22,579 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 345 [2021-10-15 19:11:22,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 100 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 19:11:22,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:22,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 345 [2021-10-15 19:11:22,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:22,654 INFO L129 PetriNetUnfolder]: 55/203 cut-off events. [2021-10-15 19:11:22,654 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-10-15 19:11:22,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 203 events. 55/203 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 376 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 258. Up to 19 conditions per place. [2021-10-15 19:11:22,657 INFO L132 encePairwiseOnDemand]: 339/345 looper letters, 14 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2021-10-15 19:11:22,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 292 flow [2021-10-15 19:11:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:11:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:11:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 908 transitions. [2021-10-15 19:11:22,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8772946859903382 [2021-10-15 19:11:22,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 908 transitions. [2021-10-15 19:11:22,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 908 transitions. [2021-10-15 19:11:22,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:22,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 908 transitions. [2021-10-15 19:11:22,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 19:11:22,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:22,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:22,678 INFO L186 Difference]: Start difference. First operand has 77 places, 100 transitions, 250 flow. Second operand 3 states and 908 transitions. [2021-10-15 19:11:22,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 292 flow [2021-10-15 19:11:22,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 104 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:11:22,686 INFO L242 Difference]: Finished difference. Result has 78 places, 102 transitions, 253 flow [2021-10-15 19:11:22,686 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=78, PETRI_TRANSITIONS=102} [2021-10-15 19:11:22,687 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -149 predicate places. [2021-10-15 19:11:22,687 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 102 transitions, 253 flow [2021-10-15 19:11:22,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 19:11:22,689 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:22,689 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 19:11:22,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:11:22,690 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:22,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash 424779435, now seen corresponding path program 1 times [2021-10-15 19:11:22,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:22,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395696929] [2021-10-15 19:11:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:22,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:22,833 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 19:11:22,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:22,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395696929] [2021-10-15 19:11:22,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395696929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:22,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:22,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:11:22,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810594122] [2021-10-15 19:11:22,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:11:22,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:22,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:11:22,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:11:22,847 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 345 [2021-10-15 19:11:22,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 102 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 19:11:22,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:22,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 345 [2021-10-15 19:11:22,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:22,971 INFO L129 PetriNetUnfolder]: 89/337 cut-off events. [2021-10-15 19:11:22,972 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:11:22,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 337 events. 89/337 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1039 event pairs, 2 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 427. Up to 27 conditions per place. [2021-10-15 19:11:22,975 INFO L132 encePairwiseOnDemand]: 333/345 looper letters, 18 selfloop transitions, 9 changer transitions 0/111 dead transitions. [2021-10-15 19:11:22,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 111 transitions, 327 flow [2021-10-15 19:11:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:11:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:11:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1094 transitions. [2021-10-15 19:11:22,983 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7927536231884058 [2021-10-15 19:11:22,983 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1094 transitions. [2021-10-15 19:11:22,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1094 transitions. [2021-10-15 19:11:22,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:22,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1094 transitions. [2021-10-15 19:11:22,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 273.5) internal successors, (1094), 4 states have internal predecessors, (1094), 0 states have call successors, (0), 0 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 19:11:23,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:23,002 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:23,002 INFO L186 Difference]: Start difference. First operand has 78 places, 102 transitions, 253 flow. Second operand 4 states and 1094 transitions. [2021-10-15 19:11:23,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 111 transitions, 327 flow [2021-10-15 19:11:23,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 111 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:11:23,009 INFO L242 Difference]: Finished difference. Result has 82 places, 108 transitions, 312 flow [2021-10-15 19:11:23,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=82, PETRI_TRANSITIONS=108} [2021-10-15 19:11:23,010 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -145 predicate places. [2021-10-15 19:11:23,011 INFO L470 AbstractCegarLoop]: Abstraction has has 82 places, 108 transitions, 312 flow [2021-10-15 19:11:23,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 19:11:23,012 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:23,012 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 19:11:23,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:11:23,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:23,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:23,014 INFO L82 PathProgramCache]: Analyzing trace with hash 166613997, now seen corresponding path program 1 times [2021-10-15 19:11:23,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:23,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953026266] [2021-10-15 19:11:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:23,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:23,100 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 19:11:23,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:23,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953026266] [2021-10-15 19:11:23,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953026266] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:23,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:23,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:11:23,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122079161] [2021-10-15 19:11:23,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:11:23,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:23,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:11:23,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:11:23,107 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 345 [2021-10-15 19:11:23,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 108 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 19:11:23,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:23,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 345 [2021-10-15 19:11:23,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:23,348 INFO L129 PetriNetUnfolder]: 211/769 cut-off events. [2021-10-15 19:11:23,348 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2021-10-15 19:11:23,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 769 events. 211/769 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3107 event pairs, 0 based on Foata normal form. 0/626 useless extension candidates. Maximal degree in co-relation 1091. Up to 78 conditions per place. [2021-10-15 19:11:23,356 INFO L132 encePairwiseOnDemand]: 338/345 looper letters, 44 selfloop transitions, 12 changer transitions 0/145 dead transitions. [2021-10-15 19:11:23,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 145 transitions, 549 flow [2021-10-15 19:11:23,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:11:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:11:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2045 transitions. [2021-10-15 19:11:23,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8467908902691511 [2021-10-15 19:11:23,370 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2045 transitions. [2021-10-15 19:11:23,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2045 transitions. [2021-10-15 19:11:23,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:23,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2045 transitions. [2021-10-15 19:11:23,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 292.14285714285717) internal successors, (2045), 7 states have internal predecessors, (2045), 0 states have call successors, (0), 0 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 19:11:23,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:23,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:23,397 INFO L186 Difference]: Start difference. First operand has 82 places, 108 transitions, 312 flow. Second operand 7 states and 2045 transitions. [2021-10-15 19:11:23,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 145 transitions, 549 flow [2021-10-15 19:11:23,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 145 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:11:23,411 INFO L242 Difference]: Finished difference. Result has 92 places, 117 transitions, 388 flow [2021-10-15 19:11:23,411 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=92, PETRI_TRANSITIONS=117} [2021-10-15 19:11:23,412 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -135 predicate places. [2021-10-15 19:11:23,415 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 117 transitions, 388 flow [2021-10-15 19:11:23,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 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 19:11:23,417 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:23,417 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 19:11:23,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:11:23,417 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash 312792685, now seen corresponding path program 1 times [2021-10-15 19:11:23,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:23,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260281639] [2021-10-15 19:11:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:23,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:23,537 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 19:11:23,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:23,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260281639] [2021-10-15 19:11:23,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260281639] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:23,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:23,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:11:23,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847551464] [2021-10-15 19:11:23,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:11:23,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:11:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:11:23,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 345 [2021-10-15 19:11:23,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 117 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 19:11:23,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:23,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 345 [2021-10-15 19:11:23,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:23,719 INFO L129 PetriNetUnfolder]: 206/775 cut-off events. [2021-10-15 19:11:23,720 INFO L130 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2021-10-15 19:11:23,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 775 events. 206/775 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3200 event pairs, 2 based on Foata normal form. 9/641 useless extension candidates. Maximal degree in co-relation 1155. Up to 78 conditions per place. [2021-10-15 19:11:23,729 INFO L132 encePairwiseOnDemand]: 333/345 looper letters, 16 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2021-10-15 19:11:23,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 442 flow [2021-10-15 19:11:23,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:11:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:11:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1091 transitions. [2021-10-15 19:11:23,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7905797101449276 [2021-10-15 19:11:23,737 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1091 transitions. [2021-10-15 19:11:23,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1091 transitions. [2021-10-15 19:11:23,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:23,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1091 transitions. [2021-10-15 19:11:23,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.75) internal successors, (1091), 4 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 19:11:23,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:23,751 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:23,752 INFO L186 Difference]: Start difference. First operand has 92 places, 117 transitions, 388 flow. Second operand 4 states and 1091 transitions. [2021-10-15 19:11:23,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 442 flow [2021-10-15 19:11:23,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:11:23,760 INFO L242 Difference]: Finished difference. Result has 94 places, 118 transitions, 413 flow [2021-10-15 19:11:23,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=94, PETRI_TRANSITIONS=118} [2021-10-15 19:11:23,761 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -133 predicate places. [2021-10-15 19:11:23,762 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 118 transitions, 413 flow [2021-10-15 19:11:23,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 19:11:23,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:23,763 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 19:11:23,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:11:23,764 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:23,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:23,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1323909935, now seen corresponding path program 1 times [2021-10-15 19:11:23,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:23,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067896727] [2021-10-15 19:11:23,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:23,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:23,837 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 19:11:23,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:23,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067896727] [2021-10-15 19:11:23,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067896727] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:23,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:23,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:11:23,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005589644] [2021-10-15 19:11:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:11:23,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:11:23,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:11:23,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 345 [2021-10-15 19:11:23,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 118 transitions, 413 flow. Second operand has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 19:11:23,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:23,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 345 [2021-10-15 19:11:23,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:24,152 INFO L129 PetriNetUnfolder]: 251/945 cut-off events. [2021-10-15 19:11:24,153 INFO L130 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2021-10-15 19:11:24,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 945 events. 251/945 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4333 event pairs, 0 based on Foata normal form. 3/764 useless extension candidates. Maximal degree in co-relation 1422. Up to 78 conditions per place. [2021-10-15 19:11:24,163 INFO L132 encePairwiseOnDemand]: 336/345 looper letters, 16 selfloop transitions, 12 changer transitions 0/125 dead transitions. [2021-10-15 19:11:24,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 503 flow [2021-10-15 19:11:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:11:24,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:11:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1208 transitions. [2021-10-15 19:11:24,171 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8753623188405797 [2021-10-15 19:11:24,171 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1208 transitions. [2021-10-15 19:11:24,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1208 transitions. [2021-10-15 19:11:24,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:24,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1208 transitions. [2021-10-15 19:11:24,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 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 19:11:24,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:24,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:24,188 INFO L186 Difference]: Start difference. First operand has 94 places, 118 transitions, 413 flow. Second operand 4 states and 1208 transitions. [2021-10-15 19:11:24,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 503 flow [2021-10-15 19:11:24,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 125 transitions, 483 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-15 19:11:24,200 INFO L242 Difference]: Finished difference. Result has 97 places, 121 transitions, 461 flow [2021-10-15 19:11:24,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=461, PETRI_PLACES=97, PETRI_TRANSITIONS=121} [2021-10-15 19:11:24,202 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -130 predicate places. [2021-10-15 19:11:24,202 INFO L470 AbstractCegarLoop]: Abstraction has has 97 places, 121 transitions, 461 flow [2021-10-15 19:11:24,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 19:11:24,203 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:24,204 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 19:11:24,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:11:24,205 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:24,206 INFO L82 PathProgramCache]: Analyzing trace with hash 570958123, now seen corresponding path program 1 times [2021-10-15 19:11:24,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:24,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295813265] [2021-10-15 19:11:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:24,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:24,318 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 19:11:24,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:24,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295813265] [2021-10-15 19:11:24,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295813265] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:24,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:24,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:11:24,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381038622] [2021-10-15 19:11:24,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:11:24,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:11:24,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:11:24,338 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 345 [2021-10-15 19:11:24,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 121 transitions, 461 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 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 19:11:24,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:24,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 345 [2021-10-15 19:11:24,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:24,642 INFO L129 PetriNetUnfolder]: 285/1079 cut-off events. [2021-10-15 19:11:24,642 INFO L130 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2021-10-15 19:11:24,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 1079 events. 285/1079 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4856 event pairs, 0 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 1724. Up to 103 conditions per place. [2021-10-15 19:11:24,652 INFO L132 encePairwiseOnDemand]: 327/345 looper letters, 28 selfloop transitions, 15 changer transitions 0/136 dead transitions. [2021-10-15 19:11:24,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 581 flow [2021-10-15 19:11:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:11:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:11:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1255 transitions. [2021-10-15 19:11:24,659 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7275362318840579 [2021-10-15 19:11:24,659 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1255 transitions. [2021-10-15 19:11:24,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1255 transitions. [2021-10-15 19:11:24,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:24,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1255 transitions. [2021-10-15 19:11:24,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:24,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 19:11:24,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 19:11:24,699 INFO L186 Difference]: Start difference. First operand has 97 places, 121 transitions, 461 flow. Second operand 5 states and 1255 transitions. [2021-10-15 19:11:24,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 581 flow [2021-10-15 19:11:24,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:11:24,709 INFO L242 Difference]: Finished difference. Result has 103 places, 130 transitions, 552 flow [2021-10-15 19:11:24,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2021-10-15 19:11:24,711 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -124 predicate places. [2021-10-15 19:11:24,712 INFO L470 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 552 flow [2021-10-15 19:11:24,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 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 19:11:24,713 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:24,713 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 19:11:24,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:11:24,714 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:24,716 INFO L82 PathProgramCache]: Analyzing trace with hash -598753245, now seen corresponding path program 1 times [2021-10-15 19:11:24,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:24,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425965422] [2021-10-15 19:11:24,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:24,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:24,876 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 19:11:24,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:24,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425965422] [2021-10-15 19:11:24,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425965422] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:24,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:24,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:11:24,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52156901] [2021-10-15 19:11:24,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:11:24,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:24,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:11:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:11:24,886 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 345 [2021-10-15 19:11:24,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 552 flow. Second operand has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 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 19:11:24,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:24,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 345 [2021-10-15 19:11:24,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:25,903 INFO L129 PetriNetUnfolder]: 986/4310 cut-off events. [2021-10-15 19:11:25,903 INFO L130 PetriNetUnfolder]: For 986/986 co-relation queries the response was YES. [2021-10-15 19:11:25,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7791 conditions, 4310 events. 986/4310 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 35596 event pairs, 0 based on Foata normal form. 21/3641 useless extension candidates. Maximal degree in co-relation 7773. Up to 576 conditions per place. [2021-10-15 19:11:26,011 INFO L132 encePairwiseOnDemand]: 324/345 looper letters, 42 selfloop transitions, 49 changer transitions 0/196 dead transitions. [2021-10-15 19:11:26,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 196 transitions, 982 flow [2021-10-15 19:11:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-15 19:11:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-15 19:11:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3721 transitions. [2021-10-15 19:11:26,029 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7703933747412008 [2021-10-15 19:11:26,029 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3721 transitions. [2021-10-15 19:11:26,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3721 transitions. [2021-10-15 19:11:26,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:26,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3721 transitions. [2021-10-15 19:11:26,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 265.7857142857143) internal successors, (3721), 14 states have internal predecessors, (3721), 0 states have call successors, (0), 0 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 19:11:26,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 345.0) internal successors, (5175), 15 states have internal predecessors, (5175), 0 states have call successors, (0), 0 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 19:11:26,069 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 345.0) internal successors, (5175), 15 states have internal predecessors, (5175), 0 states have call successors, (0), 0 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 19:11:26,070 INFO L186 Difference]: Start difference. First operand has 103 places, 130 transitions, 552 flow. Second operand 14 states and 3721 transitions. [2021-10-15 19:11:26,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 196 transitions, 982 flow [2021-10-15 19:11:26,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 196 transitions, 964 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-15 19:11:26,099 INFO L242 Difference]: Finished difference. Result has 125 places, 178 transitions, 945 flow [2021-10-15 19:11:26,100 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=945, PETRI_PLACES=125, PETRI_TRANSITIONS=178} [2021-10-15 19:11:26,101 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -102 predicate places. [2021-10-15 19:11:26,101 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 178 transitions, 945 flow [2021-10-15 19:11:26,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 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 19:11:26,102 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:26,102 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 19:11:26,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 19:11:26,103 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:26,107 INFO L82 PathProgramCache]: Analyzing trace with hash 81305125, now seen corresponding path program 1 times [2021-10-15 19:11:26,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:26,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775484277] [2021-10-15 19:11:26,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:26,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:26,218 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 19:11:26,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:26,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775484277] [2021-10-15 19:11:26,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775484277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:26,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:26,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:11:26,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034493453] [2021-10-15 19:11:26,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:11:26,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:11:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:11:26,225 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 345 [2021-10-15 19:11:26,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 178 transitions, 945 flow. Second operand has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 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 19:11:26,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:26,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 345 [2021-10-15 19:11:26,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:27,537 INFO L129 PetriNetUnfolder]: 1080/4720 cut-off events. [2021-10-15 19:11:27,537 INFO L130 PetriNetUnfolder]: For 4363/4363 co-relation queries the response was YES. [2021-10-15 19:11:27,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9622 conditions, 4720 events. 1080/4720 cut-off events. For 4363/4363 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 37880 event pairs, 0 based on Foata normal form. 96/4072 useless extension candidates. Maximal degree in co-relation 9594. Up to 726 conditions per place. [2021-10-15 19:11:27,597 INFO L132 encePairwiseOnDemand]: 334/345 looper letters, 63 selfloop transitions, 15 changer transitions 0/168 dead transitions. [2021-10-15 19:11:27,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 168 transitions, 1120 flow [2021-10-15 19:11:27,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:11:27,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:11:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1828 transitions. [2021-10-15 19:11:27,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.756935817805383 [2021-10-15 19:11:27,607 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1828 transitions. [2021-10-15 19:11:27,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1828 transitions. [2021-10-15 19:11:27,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:27,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1828 transitions. [2021-10-15 19:11:27,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.14285714285717) internal successors, (1828), 7 states have internal predecessors, (1828), 0 states have call successors, (0), 0 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 19:11:27,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:27,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:27,630 INFO L186 Difference]: Start difference. First operand has 125 places, 178 transitions, 945 flow. Second operand 7 states and 1828 transitions. [2021-10-15 19:11:27,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 168 transitions, 1120 flow [2021-10-15 19:11:27,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 168 transitions, 1091 flow, removed 12 selfloop flow, removed 1 redundant places. [2021-10-15 19:11:27,665 INFO L242 Difference]: Finished difference. Result has 116 places, 135 transitions, 767 flow [2021-10-15 19:11:27,666 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=767, PETRI_PLACES=116, PETRI_TRANSITIONS=135} [2021-10-15 19:11:27,666 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -111 predicate places. [2021-10-15 19:11:27,667 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 135 transitions, 767 flow [2021-10-15 19:11:27,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 255.0) internal successors, (1275), 5 states have internal predecessors, (1275), 0 states have call successors, (0), 0 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 19:11:27,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:27,668 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 19:11:27,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 19:11:27,669 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:27,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:27,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1988742173, now seen corresponding path program 1 times [2021-10-15 19:11:27,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:27,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939385401] [2021-10-15 19:11:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:27,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:27,785 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 19:11:27,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:27,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939385401] [2021-10-15 19:11:27,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939385401] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:27,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:27,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:11:27,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670180355] [2021-10-15 19:11:27,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:11:27,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:11:27,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:11:27,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 345 [2021-10-15 19:11:27,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 135 transitions, 767 flow. Second operand has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 0 states have call successors, (0), 0 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 19:11:27,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:27,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 345 [2021-10-15 19:11:27,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:29,150 INFO L129 PetriNetUnfolder]: 976/4647 cut-off events. [2021-10-15 19:11:29,150 INFO L130 PetriNetUnfolder]: For 8657/8657 co-relation queries the response was YES. [2021-10-15 19:11:29,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9823 conditions, 4647 events. 976/4647 cut-off events. For 8657/8657 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 38032 event pairs, 0 based on Foata normal form. 83/4033 useless extension candidates. Maximal degree in co-relation 9789. Up to 672 conditions per place. [2021-10-15 19:11:29,260 INFO L132 encePairwiseOnDemand]: 338/345 looper letters, 35 selfloop transitions, 27 changer transitions 0/148 dead transitions. [2021-10-15 19:11:29,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 148 transitions, 1069 flow [2021-10-15 19:11:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:11:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:11:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2083 transitions. [2021-10-15 19:11:29,273 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8625258799171842 [2021-10-15 19:11:29,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2083 transitions. [2021-10-15 19:11:29,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2083 transitions. [2021-10-15 19:11:29,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:29,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2083 transitions. [2021-10-15 19:11:29,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 297.57142857142856) internal successors, (2083), 7 states have internal predecessors, (2083), 0 states have call successors, (0), 0 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 19:11:29,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:29,298 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:29,298 INFO L186 Difference]: Start difference. First operand has 116 places, 135 transitions, 767 flow. Second operand 7 states and 2083 transitions. [2021-10-15 19:11:29,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 148 transitions, 1069 flow [2021-10-15 19:11:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 148 transitions, 985 flow, removed 42 selfloop flow, removed 0 redundant places. [2021-10-15 19:11:29,346 INFO L242 Difference]: Finished difference. Result has 126 places, 139 transitions, 920 flow [2021-10-15 19:11:29,347 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=920, PETRI_PLACES=126, PETRI_TRANSITIONS=139} [2021-10-15 19:11:29,347 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -101 predicate places. [2021-10-15 19:11:29,348 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 139 transitions, 920 flow [2021-10-15 19:11:29,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 0 states have call successors, (0), 0 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 19:11:29,349 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:29,349 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:29,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-15 19:11:29,350 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:29,351 INFO L82 PathProgramCache]: Analyzing trace with hash 756271311, now seen corresponding path program 1 times [2021-10-15 19:11:29,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:29,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725268692] [2021-10-15 19:11:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:29,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:11:29,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:29,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725268692] [2021-10-15 19:11:29,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725268692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:29,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:29,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:11:29,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836442394] [2021-10-15 19:11:29,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:11:29,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:11:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:11:29,472 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 345 [2021-10-15 19:11:29,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 139 transitions, 920 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 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 19:11:29,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:29,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 345 [2021-10-15 19:11:29,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:30,290 INFO L129 PetriNetUnfolder]: 660/3385 cut-off events. [2021-10-15 19:11:30,290 INFO L130 PetriNetUnfolder]: For 6138/6138 co-relation queries the response was YES. [2021-10-15 19:11:30,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7418 conditions, 3385 events. 660/3385 cut-off events. For 6138/6138 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 25641 event pairs, 0 based on Foata normal form. 36/2912 useless extension candidates. Maximal degree in co-relation 7379. Up to 504 conditions per place. [2021-10-15 19:11:30,353 INFO L132 encePairwiseOnDemand]: 339/345 looper letters, 24 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2021-10-15 19:11:30,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 137 transitions, 957 flow [2021-10-15 19:11:30,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:11:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:11:30,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1224 transitions. [2021-10-15 19:11:30,360 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7095652173913043 [2021-10-15 19:11:30,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1224 transitions. [2021-10-15 19:11:30,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1224 transitions. [2021-10-15 19:11:30,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:30,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1224 transitions. [2021-10-15 19:11:30,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.8) internal successors, (1224), 5 states have internal predecessors, (1224), 0 states have call successors, (0), 0 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 19:11:30,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 19:11:30,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 0 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 19:11:30,376 INFO L186 Difference]: Start difference. First operand has 126 places, 139 transitions, 920 flow. Second operand 5 states and 1224 transitions. [2021-10-15 19:11:30,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 137 transitions, 957 flow [2021-10-15 19:11:30,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 137 transitions, 870 flow, removed 40 selfloop flow, removed 2 redundant places. [2021-10-15 19:11:30,419 INFO L242 Difference]: Finished difference. Result has 129 places, 137 transitions, 854 flow [2021-10-15 19:11:30,420 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=854, PETRI_PLACES=129, PETRI_TRANSITIONS=137} [2021-10-15 19:11:30,420 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -98 predicate places. [2021-10-15 19:11:30,420 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 137 transitions, 854 flow [2021-10-15 19:11:30,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 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 19:11:30,421 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:30,422 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:30,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-15 19:11:30,422 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:30,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:30,423 INFO L82 PathProgramCache]: Analyzing trace with hash -110145967, now seen corresponding path program 1 times [2021-10-15 19:11:30,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:30,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854201991] [2021-10-15 19:11:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:30,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:11:30,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:30,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854201991] [2021-10-15 19:11:30,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854201991] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:30,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:30,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:11:30,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533135083] [2021-10-15 19:11:30,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:11:30,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:11:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:11:30,548 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 345 [2021-10-15 19:11:30,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 137 transitions, 854 flow. Second operand has 5 states, 5 states have (on average 295.2) internal successors, (1476), 5 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 19:11:30,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:30,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 345 [2021-10-15 19:11:30,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:31,166 INFO L129 PetriNetUnfolder]: 520/2713 cut-off events. [2021-10-15 19:11:31,167 INFO L130 PetriNetUnfolder]: For 2532/2532 co-relation queries the response was YES. [2021-10-15 19:11:31,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5642 conditions, 2713 events. 520/2713 cut-off events. For 2532/2532 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19732 event pairs, 0 based on Foata normal form. 19/2323 useless extension candidates. Maximal degree in co-relation 5603. Up to 402 conditions per place. [2021-10-15 19:11:31,208 INFO L132 encePairwiseOnDemand]: 337/345 looper letters, 27 selfloop transitions, 34 changer transitions 0/145 dead transitions. [2021-10-15 19:11:31,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 145 transitions, 1032 flow [2021-10-15 19:11:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:11:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:11:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2082 transitions. [2021-10-15 19:11:31,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8621118012422361 [2021-10-15 19:11:31,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2082 transitions. [2021-10-15 19:11:31,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2082 transitions. [2021-10-15 19:11:31,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:31,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2082 transitions. [2021-10-15 19:11:31,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 297.42857142857144) internal successors, (2082), 7 states have internal predecessors, (2082), 0 states have call successors, (0), 0 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 19:11:31,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:31,237 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 345.0) internal successors, (2760), 8 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:11:31,237 INFO L186 Difference]: Start difference. First operand has 129 places, 137 transitions, 854 flow. Second operand 7 states and 2082 transitions. [2021-10-15 19:11:31,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 145 transitions, 1032 flow [2021-10-15 19:11:31,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 145 transitions, 1013 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-10-15 19:11:31,273 INFO L242 Difference]: Finished difference. Result has 132 places, 141 transitions, 962 flow [2021-10-15 19:11:31,274 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=962, PETRI_PLACES=132, PETRI_TRANSITIONS=141} [2021-10-15 19:11:31,274 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -95 predicate places. [2021-10-15 19:11:31,275 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 141 transitions, 962 flow [2021-10-15 19:11:31,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.2) internal successors, (1476), 5 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 19:11:31,276 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:31,276 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:31,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-15 19:11:31,277 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:31,278 INFO L82 PathProgramCache]: Analyzing trace with hash -314497775, now seen corresponding path program 1 times [2021-10-15 19:11:31,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:31,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365835294] [2021-10-15 19:11:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:31,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-15 19:11:31,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:31,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365835294] [2021-10-15 19:11:31,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365835294] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:31,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:11:31,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:11:31,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342575064] [2021-10-15 19:11:31,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:11:31,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:31,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:11:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:11:31,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 345 [2021-10-15 19:11:31,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 141 transitions, 962 flow. Second operand has 6 states, 6 states have (on average 277.6666666666667) internal successors, (1666), 6 states have internal predecessors, (1666), 0 states have call successors, (0), 0 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 19:11:31,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:31,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 345 [2021-10-15 19:11:31,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:32,250 INFO L129 PetriNetUnfolder]: 580/2983 cut-off events. [2021-10-15 19:11:32,250 INFO L130 PetriNetUnfolder]: For 3340/3340 co-relation queries the response was YES. [2021-10-15 19:11:32,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6233 conditions, 2983 events. 580/2983 cut-off events. For 3340/3340 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 22042 event pairs, 0 based on Foata normal form. 12/2520 useless extension candidates. Maximal degree in co-relation 6194. Up to 474 conditions per place. [2021-10-15 19:11:32,292 INFO L132 encePairwiseOnDemand]: 333/345 looper letters, 50 selfloop transitions, 37 changer transitions 0/167 dead transitions. [2021-10-15 19:11:32,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 167 transitions, 1292 flow [2021-10-15 19:11:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 19:11:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-15 19:11:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3635 transitions. [2021-10-15 19:11:32,309 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.810479375696767 [2021-10-15 19:11:32,309 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3635 transitions. [2021-10-15 19:11:32,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3635 transitions. [2021-10-15 19:11:32,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:32,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3635 transitions. [2021-10-15 19:11:32,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 279.61538461538464) internal successors, (3635), 13 states have internal predecessors, (3635), 0 states have call successors, (0), 0 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 19:11:32,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 345.0) internal successors, (4830), 14 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 19:11:32,344 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 345.0) internal successors, (4830), 14 states have internal predecessors, (4830), 0 states have call successors, (0), 0 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 19:11:32,345 INFO L186 Difference]: Start difference. First operand has 132 places, 141 transitions, 962 flow. Second operand 13 states and 3635 transitions. [2021-10-15 19:11:32,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 167 transitions, 1292 flow [2021-10-15 19:11:32,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 167 transitions, 1192 flow, removed 22 selfloop flow, removed 4 redundant places. [2021-10-15 19:11:32,386 INFO L242 Difference]: Finished difference. Result has 146 places, 149 transitions, 1049 flow [2021-10-15 19:11:32,387 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1049, PETRI_PLACES=146, PETRI_TRANSITIONS=149} [2021-10-15 19:11:32,387 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -81 predicate places. [2021-10-15 19:11:32,387 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 149 transitions, 1049 flow [2021-10-15 19:11:32,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.6666666666667) internal successors, (1666), 6 states have internal predecessors, (1666), 0 states have call successors, (0), 0 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 19:11:32,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:32,389 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:32,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-15 19:11:32,390 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:32,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:32,391 INFO L82 PathProgramCache]: Analyzing trace with hash 489691227, now seen corresponding path program 1 times [2021-10-15 19:11:32,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:32,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566817728] [2021-10-15 19:11:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:32,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-15 19:11:32,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:32,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566817728] [2021-10-15 19:11:32,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566817728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:11:32,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798569334] [2021-10-15 19:11:32,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:32,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:11:32,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:32,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:11:32,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:11:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:32,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:11:32,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:11:33,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798569334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:11:33,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:11:33,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-10-15 19:11:33,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249580333] [2021-10-15 19:11:33,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:11:33,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:11:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:11:33,085 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 345 [2021-10-15 19:11:33,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 149 transitions, 1049 flow. Second operand has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 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 19:11:33,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:33,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 345 [2021-10-15 19:11:33,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:33,755 INFO L129 PetriNetUnfolder]: 459/2451 cut-off events. [2021-10-15 19:11:33,755 INFO L130 PetriNetUnfolder]: For 3306/3306 co-relation queries the response was YES. [2021-10-15 19:11:33,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5486 conditions, 2451 events. 459/2451 cut-off events. For 3306/3306 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17692 event pairs, 0 based on Foata normal form. 7/2077 useless extension candidates. Maximal degree in co-relation 5443. Up to 384 conditions per place. [2021-10-15 19:11:33,779 INFO L132 encePairwiseOnDemand]: 336/345 looper letters, 38 selfloop transitions, 34 changer transitions 0/157 dead transitions. [2021-10-15 19:11:33,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 157 transitions, 1255 flow [2021-10-15 19:11:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:11:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 19:11:33,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2905 transitions. [2021-10-15 19:11:33,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654808959156785 [2021-10-15 19:11:33,792 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2905 transitions. [2021-10-15 19:11:33,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2905 transitions. [2021-10-15 19:11:33,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:33,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2905 transitions. [2021-10-15 19:11:33,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 264.09090909090907) internal successors, (2905), 11 states have internal predecessors, (2905), 0 states have call successors, (0), 0 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 19:11:33,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 345.0) internal successors, (4140), 12 states have internal predecessors, (4140), 0 states have call successors, (0), 0 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 19:11:33,817 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 345.0) internal successors, (4140), 12 states have internal predecessors, (4140), 0 states have call successors, (0), 0 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 19:11:33,817 INFO L186 Difference]: Start difference. First operand has 146 places, 149 transitions, 1049 flow. Second operand 11 states and 2905 transitions. [2021-10-15 19:11:33,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 157 transitions, 1255 flow [2021-10-15 19:11:33,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 157 transitions, 1217 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-10-15 19:11:33,857 INFO L242 Difference]: Finished difference. Result has 152 places, 150 transitions, 1098 flow [2021-10-15 19:11:33,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1098, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2021-10-15 19:11:33,858 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -75 predicate places. [2021-10-15 19:11:33,858 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 1098 flow [2021-10-15 19:11:33,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 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 19:11:33,859 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:11:33,859 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:33,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:34,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-15 19:11:34,079 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:11:34,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:11:34,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1160797256, now seen corresponding path program 1 times [2021-10-15 19:11:34,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:11:34,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133759174] [2021-10-15 19:11:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:34,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:11:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 19:11:34,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:11:34,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133759174] [2021-10-15 19:11:34,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133759174] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:11:34,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43284053] [2021-10-15 19:11:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:11:34,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:11:34,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:11:34,185 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:11:34,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:11:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:11:34,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:11:34,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:11:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 19:11:34,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43284053] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:11:34,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:11:34,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-10-15 19:11:34,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361104737] [2021-10-15 19:11:34,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:11:34,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:11:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:11:34,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:11:34,677 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 345 [2021-10-15 19:11:34,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 150 transitions, 1098 flow. Second operand has 7 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 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 19:11:34,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:11:34,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 345 [2021-10-15 19:11:34,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:11:35,541 INFO L129 PetriNetUnfolder]: 536/2992 cut-off events. [2021-10-15 19:11:35,541 INFO L130 PetriNetUnfolder]: For 4266/4266 co-relation queries the response was YES. [2021-10-15 19:11:35,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6639 conditions, 2992 events. 536/2992 cut-off events. For 4266/4266 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22867 event pairs, 0 based on Foata normal form. 62/2568 useless extension candidates. Maximal degree in co-relation 6594. Up to 480 conditions per place. [2021-10-15 19:11:35,583 INFO L132 encePairwiseOnDemand]: 334/345 looper letters, 0 selfloop transitions, 0 changer transitions 193/193 dead transitions. [2021-10-15 19:11:35,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 193 transitions, 1523 flow [2021-10-15 19:11:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:11:35,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 19:11:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3189 transitions. [2021-10-15 19:11:35,595 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8403162055335969 [2021-10-15 19:11:35,596 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3189 transitions. [2021-10-15 19:11:35,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3189 transitions. [2021-10-15 19:11:35,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:11:35,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3189 transitions. [2021-10-15 19:11:35,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 289.90909090909093) internal successors, (3189), 11 states have internal predecessors, (3189), 0 states have call successors, (0), 0 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 19:11:35,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 345.0) internal successors, (4140), 12 states have internal predecessors, (4140), 0 states have call successors, (0), 0 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 19:11:35,623 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 345.0) internal successors, (4140), 12 states have internal predecessors, (4140), 0 states have call successors, (0), 0 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 19:11:35,623 INFO L186 Difference]: Start difference. First operand has 152 places, 150 transitions, 1098 flow. Second operand 11 states and 3189 transitions. [2021-10-15 19:11:35,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 193 transitions, 1523 flow [2021-10-15 19:11:35,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 193 transitions, 1438 flow, removed 8 selfloop flow, removed 9 redundant places. [2021-10-15 19:11:35,669 INFO L242 Difference]: Finished difference. Result has 151 places, 0 transitions, 0 flow [2021-10-15 19:11:35,670 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=151, PETRI_TRANSITIONS=0} [2021-10-15 19:11:35,670 INFO L334 CegarLoopForPetriNet]: 227 programPoint places, -76 predicate places. [2021-10-15 19:11:35,670 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 0 transitions, 0 flow [2021-10-15 19:11:35,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 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 19:11:35,675 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:11:35,676 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:11:35,676 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:11:35,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:11:35,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-15 19:11:35,908 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:11:35,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:11:35 BoogieIcfgContainer [2021-10-15 19:11:35,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:11:35,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:11:35,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:11:35,926 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:11:35,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:11:20" (3/4) ... [2021-10-15 19:11:35,930 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:11:35,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2021-10-15 19:11:35,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-15 19:11:35,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 19:11:35,992 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 19:11:35,995 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:11:35,998 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:11:36,001 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:11:36,214 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:11:36,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:11:36,216 INFO L168 Benchmark]: Toolchain (without parser) took 18915.74 ms. Allocated memory was 100.7 MB in the beginning and 708.8 MB in the end (delta: 608.2 MB). Free memory was 61.2 MB in the beginning and 247.8 MB in the end (delta: -186.6 MB). Peak memory consumption was 419.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:36,216 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 78.6 MB in the end (delta: 58.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:11:36,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 829.12 ms. Allocated memory is still 100.7 MB. Free memory was 61.0 MB in the beginning and 68.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:36,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.29 ms. Allocated memory is still 100.7 MB. Free memory was 68.3 MB in the beginning and 62.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:36,218 INFO L168 Benchmark]: Boogie Preprocessor took 103.11 ms. Allocated memory is still 100.7 MB. Free memory was 62.3 MB in the beginning and 58.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:36,218 INFO L168 Benchmark]: RCFGBuilder took 1813.28 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 58.1 MB in the beginning and 67.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:36,219 INFO L168 Benchmark]: TraceAbstraction took 15703.50 ms. Allocated memory was 125.8 MB in the beginning and 708.8 MB in the end (delta: 583.0 MB). Free memory was 67.7 MB in the beginning and 266.7 MB in the end (delta: -198.9 MB). Peak memory consumption was 382.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:36,220 INFO L168 Benchmark]: Witness Printer took 289.17 ms. Allocated memory is still 708.8 MB. Free memory was 266.7 MB in the beginning and 247.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:11:36,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory was 78.7 MB in the beginning and 78.6 MB in the end (delta: 58.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 829.12 ms. Allocated memory is still 100.7 MB. Free memory was 61.0 MB in the beginning and 68.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 158.29 ms. Allocated memory is still 100.7 MB. Free memory was 68.3 MB in the beginning and 62.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.11 ms. Allocated memory is still 100.7 MB. Free memory was 62.3 MB in the beginning and 58.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1813.28 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 58.1 MB in the beginning and 67.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15703.50 ms. Allocated memory was 125.8 MB in the beginning and 708.8 MB in the end (delta: 583.0 MB). Free memory was 67.7 MB in the beginning and 266.7 MB in the end (delta: -198.9 MB). Peak memory consumption was 382.7 MB. Max. memory is 16.1 GB. * Witness Printer took 289.17 ms. Allocated memory is still 708.8 MB. Free memory was 266.7 MB in the beginning and 247.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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 - PositiveResult [Line: 477]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 477]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 477]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 231 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 23.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15583.2ms, OverallIterations: 18, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 11070.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 196.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 197 SDtfs, 344 SDslu, 311 SDs, 0 SdLazy, 731 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1394.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 785.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1098occurred in iteration=17, InterpolantAutomatonStates: 115, 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: 192.2ms SsaConstructionTime, 894.5ms SatisfiabilityAnalysisTime, 2130.4ms InterpolantComputationTime, 819 NumberOfCodeBlocks, 819 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 1620 SizeOfPredicates, 8 NumberOfNonLiveVariables, 951 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 20 InterpolantComputations, 17 PerfectInterpolantSequences, 89/105 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:11:36,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5c6390e-68de-4030-abaa-6dfb38d4f16f/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...