./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU --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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:15:40,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:15:40,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:15:40,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:15:40,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:15:40,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:15:40,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:15:40,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:15:40,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:15:40,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:15:40,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:15:40,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:15:40,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:15:40,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:15:40,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:15:40,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:15:40,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:15:40,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:15:40,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:15:40,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:15:41,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:15:41,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:15:41,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:15:41,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:15:41,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:15:41,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:15:41,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:15:41,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:15:41,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:15:41,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:15:41,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:15:41,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:15:41,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:15:41,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:15:41,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:15:41,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:15:41,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:15:41,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:15:41,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:15:41,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:15:41,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:15:41,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:15:41,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:15:41,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:15:41,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:15:41,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:15:41,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:15:41,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:15:41,121 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:15:41,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:15:41,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:15:41,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:15:41,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:15:41,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:15:41,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:15:41,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:15:41,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:15:41,126 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:15:41,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:15:41,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:15:41,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:15:41,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:15:41,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:15:41,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:15:41,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:15:41,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:15:41,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:15:41,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:15:41,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:15:41,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:15:41,131 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:15:41,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:15:41,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:15:41,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:15:41,132 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_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2021-11-02 22:15:41,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:15:41,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:15:41,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:15:41,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:15:41,580 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:15:41,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-11-02 22:15:41,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/data/5bb9e414c/00023db1068241ccafe59841b3ac3663/FLAG7fa3e48c0 [2021-11-02 22:15:42,329 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:15:42,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-11-02 22:15:42,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/data/5bb9e414c/00023db1068241ccafe59841b3ac3663/FLAG7fa3e48c0 [2021-11-02 22:15:42,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/data/5bb9e414c/00023db1068241ccafe59841b3ac3663 [2021-11-02 22:15:42,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:15:42,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:15:42,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:15:42,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:15:42,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:15:42,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:15:42" (1/1) ... [2021-11-02 22:15:42,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79053c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:42, skipping insertion in model container [2021-11-02 22:15:42,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:15:42" (1/1) ... [2021-11-02 22:15:42,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:15:42,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:15:42,978 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_16b479d7-e126-45eb-9b0c-ba99a4d02627/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2021-11-02 22:15:42,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:15:43,011 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:15:43,081 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_16b479d7-e126-45eb-9b0c-ba99a4d02627/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2021-11-02 22:15:43,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:15:43,103 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:15:43,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43 WrapperNode [2021-11-02 22:15:43,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:15:43,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:15:43,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:15:43,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:15:43,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:15:43,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:15:43,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:15:43,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:15:43,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:15:43,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:15:43,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:15:43,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:15:43,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (1/1) ... [2021-11-02 22:15:43,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:15:43,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:15:43,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:15:43,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:15:43,370 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-02 22:15:43,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-02 22:15:43,371 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-02 22:15:43,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-02 22:15:43,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-02 22:15:43,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-02 22:15:43,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-02 22:15:43,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-02 22:15:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:15:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:15:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:15:43,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-02 22:15:43,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-02 22:15:43,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:15:43,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:15:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:15:43,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:15:43,377 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-02 22:15:44,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:15:44,117 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-02 22:15:44,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:15:44 BoogieIcfgContainer [2021-11-02 22:15:44,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:15:44,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:15:44,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:15:44,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:15:44,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:15:42" (1/3) ... [2021-11-02 22:15:44,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b839c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:15:44, skipping insertion in model container [2021-11-02 22:15:44,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:15:43" (2/3) ... [2021-11-02 22:15:44,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b839c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:15:44, skipping insertion in model container [2021-11-02 22:15:44,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:15:44" (3/3) ... [2021-11-02 22:15:44,139 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2021-11-02 22:15:44,158 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-02 22:15:44,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:15:44,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:15:44,159 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-02 22:15:44,204 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,205 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,206 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,206 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,206 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,207 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,208 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,208 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,208 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,209 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,209 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,209 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,210 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,210 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,211 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,211 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,212 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,212 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,212 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,213 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,213 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,214 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,214 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,214 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,215 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,215 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,215 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,216 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,216 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,217 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,217 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,217 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,218 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,218 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,219 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,219 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,219 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,234 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,234 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,235 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,235 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,236 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,236 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,236 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,236 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,241 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,241 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,241 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,242 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,242 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,242 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,245 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,246 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,246 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,247 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,247 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,247 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,250 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,250 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,250 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,251 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,251 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,251 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,254 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,254 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,255 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,255 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,267 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,267 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-02 22:15:44,297 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-11-02 22:15:44,368 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:15:44,377 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:15:44,377 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 22:15:44,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 300 flow [2021-11-02 22:15:44,481 INFO L129 PetriNetUnfolder]: 2/130 cut-off events. [2021-11-02 22:15:44,481 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-02 22:15:44,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 130 events. 2/130 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2021-11-02 22:15:44,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 300 flow [2021-11-02 22:15:44,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 118 transitions, 260 flow [2021-11-02 22:15:44,547 INFO L129 PetriNetUnfolder]: 2/117 cut-off events. [2021-11-02 22:15:44,547 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-11-02 22:15:44,547 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:44,548 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:44,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:44,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:44,560 INFO L85 PathProgramCache]: Analyzing trace with hash -410649114, now seen corresponding path program 1 times [2021-11-02 22:15:44,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:44,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644340688] [2021-11-02 22:15:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:44,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:46,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:46,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644340688] [2021-11-02 22:15:46,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644340688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:46,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:46,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:15:46,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090783374] [2021-11-02 22:15:46,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:15:46,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:46,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:15:46,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:15:46,124 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-11-02 22:15:46,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 260 flow. Second operand has 11 states, 11 states have (on average 113.54545454545455) internal successors, (1249), 11 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:46,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:46,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-11-02 22:15:46,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:15:46,742 INFO L129 PetriNetUnfolder]: 40/326 cut-off events. [2021-11-02 22:15:46,742 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-11-02 22:15:46,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 326 events. 40/326 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1368 event pairs, 18 based on Foata normal form. 3/312 useless extension candidates. Maximal degree in co-relation 340. Up to 49 conditions per place. [2021-11-02 22:15:46,755 INFO L132 encePairwiseOnDemand]: 117/134 looper letters, 14 selfloop transitions, 13 changer transitions 10/134 dead transitions. [2021-11-02 22:15:46,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 134 transitions, 366 flow [2021-11-02 22:15:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:15:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-02 22:15:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1385 transitions. [2021-11-02 22:15:46,797 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.861318407960199 [2021-11-02 22:15:46,799 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1385 transitions. [2021-11-02 22:15:46,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1385 transitions. [2021-11-02 22:15:46,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:15:46,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1385 transitions. [2021-11-02 22:15:46,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.41666666666667) internal successors, (1385), 12 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:46,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:46,844 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 134.0) internal successors, (1742), 13 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:46,847 INFO L186 Difference]: Start difference. First operand has 129 places, 118 transitions, 260 flow. Second operand 12 states and 1385 transitions. [2021-11-02 22:15:46,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 134 transitions, 366 flow [2021-11-02 22:15:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 134 transitions, 350 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-11-02 22:15:46,862 INFO L242 Difference]: Finished difference. Result has 137 places, 121 transitions, 307 flow [2021-11-02 22:15:46,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=307, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2021-11-02 22:15:46,866 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 8 predicate places. [2021-11-02 22:15:46,866 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 307 flow [2021-11-02 22:15:46,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 113.54545454545455) internal successors, (1249), 11 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:46,869 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:46,870 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:46,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:15:46,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1829404082, now seen corresponding path program 2 times [2021-11-02 22:15:46,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:46,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090829065] [2021-11-02 22:15:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:46,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:47,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:47,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090829065] [2021-11-02 22:15:47,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090829065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:47,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:47,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:15:47,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484781437] [2021-11-02 22:15:47,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:15:47,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:47,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:15:47,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:15:47,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:15:47,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:47,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:47,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:15:47,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:15:48,445 INFO L129 PetriNetUnfolder]: 1390/3608 cut-off events. [2021-11-02 22:15:48,445 INFO L130 PetriNetUnfolder]: For 412/512 co-relation queries the response was YES. [2021-11-02 22:15:48,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6796 conditions, 3608 events. 1390/3608 cut-off events. For 412/512 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31297 event pairs, 361 based on Foata normal form. 66/3475 useless extension candidates. Maximal degree in co-relation 6780. Up to 707 conditions per place. [2021-11-02 22:15:48,515 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 44 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2021-11-02 22:15:48,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 158 transitions, 513 flow [2021-11-02 22:15:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:15:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-02 22:15:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 785 transitions. [2021-11-02 22:15:48,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8368869936034116 [2021-11-02 22:15:48,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 785 transitions. [2021-11-02 22:15:48,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 785 transitions. [2021-11-02 22:15:48,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:15:48,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 785 transitions. [2021-11-02 22:15:48,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:48,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:48,532 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:48,532 INFO L186 Difference]: Start difference. First operand has 137 places, 121 transitions, 307 flow. Second operand 7 states and 785 transitions. [2021-11-02 22:15:48,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 158 transitions, 513 flow [2021-11-02 22:15:48,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 158 transitions, 490 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-11-02 22:15:48,549 INFO L242 Difference]: Finished difference. Result has 132 places, 137 transitions, 398 flow [2021-11-02 22:15:48,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=132, PETRI_TRANSITIONS=137} [2021-11-02 22:15:48,551 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 3 predicate places. [2021-11-02 22:15:48,551 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 137 transitions, 398 flow [2021-11-02 22:15:48,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:48,553 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:48,553 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:48,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:15:48,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1616731496, now seen corresponding path program 3 times [2021-11-02 22:15:48,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:48,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11276210] [2021-11-02 22:15:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:48,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:48,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:48,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11276210] [2021-11-02 22:15:48,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11276210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:48,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:48,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:15:48,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897499810] [2021-11-02 22:15:48,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:15:48,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:15:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:15:48,988 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:15:48,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 137 transitions, 398 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:48,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:48,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:15:48,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:15:50,067 INFO L129 PetriNetUnfolder]: 1375/3486 cut-off events. [2021-11-02 22:15:50,068 INFO L130 PetriNetUnfolder]: For 2380/5300 co-relation queries the response was YES. [2021-11-02 22:15:50,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8791 conditions, 3486 events. 1375/3486 cut-off events. For 2380/5300 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29488 event pairs, 198 based on Foata normal form. 148/3403 useless extension candidates. Maximal degree in co-relation 8493. Up to 787 conditions per place. [2021-11-02 22:15:50,135 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 46 selfloop transitions, 55 changer transitions 2/198 dead transitions. [2021-11-02 22:15:50,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 198 transitions, 835 flow [2021-11-02 22:15:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:15:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-02 22:15:50,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 900 transitions. [2021-11-02 22:15:50,143 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8395522388059702 [2021-11-02 22:15:50,153 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 900 transitions. [2021-11-02 22:15:50,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 900 transitions. [2021-11-02 22:15:50,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:15:50,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 900 transitions. [2021-11-02 22:15:50,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.5) internal successors, (900), 8 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:50,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:50,166 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:50,167 INFO L186 Difference]: Start difference. First operand has 132 places, 137 transitions, 398 flow. Second operand 8 states and 900 transitions. [2021-11-02 22:15:50,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 198 transitions, 835 flow [2021-11-02 22:15:50,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 198 transitions, 831 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-02 22:15:50,185 INFO L242 Difference]: Finished difference. Result has 140 places, 174 transitions, 774 flow [2021-11-02 22:15:50,186 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=774, PETRI_PLACES=140, PETRI_TRANSITIONS=174} [2021-11-02 22:15:50,187 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 11 predicate places. [2021-11-02 22:15:50,187 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 174 transitions, 774 flow [2021-11-02 22:15:50,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:50,190 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:50,191 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:50,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:15:50,192 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:50,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:50,194 INFO L85 PathProgramCache]: Analyzing trace with hash 460587904, now seen corresponding path program 4 times [2021-11-02 22:15:50,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:50,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675846142] [2021-11-02 22:15:50,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:50,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:50,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:50,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675846142] [2021-11-02 22:15:50,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675846142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:50,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:50,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:15:50,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298334097] [2021-11-02 22:15:50,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:15:50,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:15:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:15:50,740 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 134 [2021-11-02 22:15:50,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 174 transitions, 774 flow. Second operand has 10 states, 10 states have (on average 113.7) internal successors, (1137), 10 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:50,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:50,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 134 [2021-11-02 22:15:50,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:15:51,675 INFO L129 PetriNetUnfolder]: 769/2911 cut-off events. [2021-11-02 22:15:51,676 INFO L130 PetriNetUnfolder]: For 4571/6869 co-relation queries the response was YES. [2021-11-02 22:15:51,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8132 conditions, 2911 events. 769/2911 cut-off events. For 4571/6869 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 28842 event pairs, 91 based on Foata normal form. 103/2875 useless extension candidates. Maximal degree in co-relation 7704. Up to 542 conditions per place. [2021-11-02 22:15:51,728 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 19 selfloop transitions, 15 changer transitions 4/187 dead transitions. [2021-11-02 22:15:51,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 187 transitions, 912 flow [2021-11-02 22:15:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:15:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 22:15:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1152 transitions. [2021-11-02 22:15:51,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8597014925373134 [2021-11-02 22:15:51,736 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1152 transitions. [2021-11-02 22:15:51,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1152 transitions. [2021-11-02 22:15:51,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:15:51,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1152 transitions. [2021-11-02 22:15:51,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.2) internal successors, (1152), 10 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:51,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:51,751 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:51,751 INFO L186 Difference]: Start difference. First operand has 140 places, 174 transitions, 774 flow. Second operand 10 states and 1152 transitions. [2021-11-02 22:15:51,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 187 transitions, 912 flow [2021-11-02 22:15:51,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 187 transitions, 898 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-11-02 22:15:51,774 INFO L242 Difference]: Finished difference. Result has 152 places, 180 transitions, 856 flow [2021-11-02 22:15:51,775 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=856, PETRI_PLACES=152, PETRI_TRANSITIONS=180} [2021-11-02 22:15:51,775 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 23 predicate places. [2021-11-02 22:15:51,775 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 180 transitions, 856 flow [2021-11-02 22:15:51,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.7) internal successors, (1137), 10 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:51,777 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:51,777 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:51,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:15:51,778 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:51,779 INFO L85 PathProgramCache]: Analyzing trace with hash -507858714, now seen corresponding path program 5 times [2021-11-02 22:15:51,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:51,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371584949] [2021-11-02 22:15:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:51,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:52,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:52,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371584949] [2021-11-02 22:15:52,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371584949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:52,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:52,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:15:52,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213784894] [2021-11-02 22:15:52,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:15:52,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:52,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:15:52,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:15:52,021 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:15:52,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 180 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:52,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:52,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:15:52,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:15:53,558 INFO L129 PetriNetUnfolder]: 1713/4389 cut-off events. [2021-11-02 22:15:53,559 INFO L130 PetriNetUnfolder]: For 12461/24190 co-relation queries the response was YES. [2021-11-02 22:15:53,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15636 conditions, 4389 events. 1713/4389 cut-off events. For 12461/24190 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 39485 event pairs, 185 based on Foata normal form. 157/4276 useless extension candidates. Maximal degree in co-relation 15607. Up to 964 conditions per place. [2021-11-02 22:15:53,649 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 42 selfloop transitions, 99 changer transitions 3/246 dead transitions. [2021-11-02 22:15:53,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 246 transitions, 1557 flow [2021-11-02 22:15:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:15:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 22:15:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1115 transitions. [2021-11-02 22:15:53,658 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.832089552238806 [2021-11-02 22:15:53,659 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1115 transitions. [2021-11-02 22:15:53,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1115 transitions. [2021-11-02 22:15:53,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:15:53,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1115 transitions. [2021-11-02 22:15:53,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 111.5) internal successors, (1115), 10 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:53,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:53,677 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:53,677 INFO L186 Difference]: Start difference. First operand has 152 places, 180 transitions, 856 flow. Second operand 10 states and 1115 transitions. [2021-11-02 22:15:53,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 246 transitions, 1557 flow [2021-11-02 22:15:53,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 246 transitions, 1514 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-11-02 22:15:53,709 INFO L242 Difference]: Finished difference. Result has 156 places, 220 transitions, 1442 flow [2021-11-02 22:15:53,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1442, PETRI_PLACES=156, PETRI_TRANSITIONS=220} [2021-11-02 22:15:53,710 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 27 predicate places. [2021-11-02 22:15:53,711 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 220 transitions, 1442 flow [2021-11-02 22:15:53,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:53,713 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:53,716 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:53,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:15:53,717 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:53,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1746384870, now seen corresponding path program 6 times [2021-11-02 22:15:53,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:53,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765656268] [2021-11-02 22:15:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:53,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:53,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:53,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765656268] [2021-11-02 22:15:53,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765656268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:53,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:53,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:15:53,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222973657] [2021-11-02 22:15:53,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:15:53,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:15:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:15:53,951 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:15:53,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 220 transitions, 1442 flow. Second operand has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:53,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:53,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:15:53,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:15:55,564 INFO L129 PetriNetUnfolder]: 1879/4897 cut-off events. [2021-11-02 22:15:55,565 INFO L130 PetriNetUnfolder]: For 23726/42957 co-relation queries the response was YES. [2021-11-02 22:15:55,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20326 conditions, 4897 events. 1879/4897 cut-off events. For 23726/42957 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 45875 event pairs, 193 based on Foata normal form. 336/4961 useless extension candidates. Maximal degree in co-relation 19840. Up to 986 conditions per place. [2021-11-02 22:15:55,667 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 48 selfloop transitions, 113 changer transitions 1/264 dead transitions. [2021-11-02 22:15:55,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 264 transitions, 2066 flow [2021-11-02 22:15:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:15:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-02 22:15:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1228 transitions. [2021-11-02 22:15:55,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8331071913161465 [2021-11-02 22:15:55,675 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1228 transitions. [2021-11-02 22:15:55,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1228 transitions. [2021-11-02 22:15:55,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:15:55,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1228 transitions. [2021-11-02 22:15:55,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.63636363636364) internal successors, (1228), 11 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:55,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:55,691 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:55,691 INFO L186 Difference]: Start difference. First operand has 156 places, 220 transitions, 1442 flow. Second operand 11 states and 1228 transitions. [2021-11-02 22:15:55,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 264 transitions, 2066 flow [2021-11-02 22:15:55,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 264 transitions, 2037 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-11-02 22:15:55,744 INFO L242 Difference]: Finished difference. Result has 165 places, 234 transitions, 1846 flow [2021-11-02 22:15:55,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1846, PETRI_PLACES=165, PETRI_TRANSITIONS=234} [2021-11-02 22:15:55,746 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 36 predicate places. [2021-11-02 22:15:55,746 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 234 transitions, 1846 flow [2021-11-02 22:15:55,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:55,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:55,748 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:55,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:15:55,748 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash 484396320, now seen corresponding path program 7 times [2021-11-02 22:15:55,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:55,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046619766] [2021-11-02 22:15:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:55,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:55,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:55,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046619766] [2021-11-02 22:15:55,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046619766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:55,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:55,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:15:55,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86532578] [2021-11-02 22:15:55,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:15:55,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:15:55,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:15:55,901 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:15:55,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 234 transitions, 1846 flow. Second operand has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:55,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:55,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:15:55,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:15:57,470 INFO L129 PetriNetUnfolder]: 1866/5048 cut-off events. [2021-11-02 22:15:57,470 INFO L130 PetriNetUnfolder]: For 32291/57670 co-relation queries the response was YES. [2021-11-02 22:15:57,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22362 conditions, 5048 events. 1866/5048 cut-off events. For 32291/57670 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 48354 event pairs, 229 based on Foata normal form. 355/5169 useless extension candidates. Maximal degree in co-relation 21849. Up to 1172 conditions per place. [2021-11-02 22:15:57,570 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 54 selfloop transitions, 108 changer transitions 3/267 dead transitions. [2021-11-02 22:15:57,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 267 transitions, 2451 flow [2021-11-02 22:15:57,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:15:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-02 22:15:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 899 transitions. [2021-11-02 22:15:57,575 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8386194029850746 [2021-11-02 22:15:57,576 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 899 transitions. [2021-11-02 22:15:57,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 899 transitions. [2021-11-02 22:15:57,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:15:57,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 899 transitions. [2021-11-02 22:15:57,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.375) internal successors, (899), 8 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:57,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:57,587 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:57,587 INFO L186 Difference]: Start difference. First operand has 165 places, 234 transitions, 1846 flow. Second operand 8 states and 899 transitions. [2021-11-02 22:15:57,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 267 transitions, 2451 flow [2021-11-02 22:15:57,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 267 transitions, 2337 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-02 22:15:57,668 INFO L242 Difference]: Finished difference. Result has 168 places, 243 transitions, 2090 flow [2021-11-02 22:15:57,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2090, PETRI_PLACES=168, PETRI_TRANSITIONS=243} [2021-11-02 22:15:57,669 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 39 predicate places. [2021-11-02 22:15:57,670 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 243 transitions, 2090 flow [2021-11-02 22:15:57,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 106.25) internal successors, (850), 8 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:57,671 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:57,671 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:57,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:15:57,672 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:57,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1362721314, now seen corresponding path program 8 times [2021-11-02 22:15:57,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:57,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529405068] [2021-11-02 22:15:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:57,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:57,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:57,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529405068] [2021-11-02 22:15:57,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529405068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:57,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:57,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:15:57,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207988891] [2021-11-02 22:15:57,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:15:57,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:57,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:15:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:15:57,844 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:15:57,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 243 transitions, 2090 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:57,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:57,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:15:57,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:15:59,442 INFO L129 PetriNetUnfolder]: 1720/4979 cut-off events. [2021-11-02 22:15:59,443 INFO L130 PetriNetUnfolder]: For 38335/62633 co-relation queries the response was YES. [2021-11-02 22:15:59,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22902 conditions, 4979 events. 1720/4979 cut-off events. For 38335/62633 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 49575 event pairs, 348 based on Foata normal form. 288/5047 useless extension candidates. Maximal degree in co-relation 22421. Up to 989 conditions per place. [2021-11-02 22:15:59,547 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 86 selfloop transitions, 83 changer transitions 3/274 dead transitions. [2021-11-02 22:15:59,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 274 transitions, 2773 flow [2021-11-02 22:15:59,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:15:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-02 22:15:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2021-11-02 22:15:59,552 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8326226012793176 [2021-11-02 22:15:59,553 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2021-11-02 22:15:59,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2021-11-02 22:15:59,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:15:59,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2021-11-02 22:15:59,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:59,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:59,563 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:59,564 INFO L186 Difference]: Start difference. First operand has 168 places, 243 transitions, 2090 flow. Second operand 7 states and 781 transitions. [2021-11-02 22:15:59,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 274 transitions, 2773 flow [2021-11-02 22:15:59,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 274 transitions, 2611 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-02 22:15:59,648 INFO L242 Difference]: Finished difference. Result has 171 places, 252 transitions, 2316 flow [2021-11-02 22:15:59,649 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2316, PETRI_PLACES=171, PETRI_TRANSITIONS=252} [2021-11-02 22:15:59,649 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 42 predicate places. [2021-11-02 22:15:59,650 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 252 transitions, 2316 flow [2021-11-02 22:15:59,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:59,651 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:15:59,651 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:15:59,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:15:59,652 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:15:59,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:15:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1074931672, now seen corresponding path program 9 times [2021-11-02 22:15:59,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:15:59,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570300120] [2021-11-02 22:15:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:15:59,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:15:59,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:59,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570300120] [2021-11-02 22:15:59,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570300120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:59,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:59,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:15:59,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113815487] [2021-11-02 22:15:59,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:15:59,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:59,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:15:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:15:59,823 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:15:59,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 252 transitions, 2316 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:15:59,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:15:59,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:15:59,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:16:00,682 INFO L129 PetriNetUnfolder]: 728/2393 cut-off events. [2021-11-02 22:16:00,682 INFO L130 PetriNetUnfolder]: For 19522/27883 co-relation queries the response was YES. [2021-11-02 22:16:00,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10791 conditions, 2393 events. 728/2393 cut-off events. For 19522/27883 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20268 event pairs, 121 based on Foata normal form. 284/2605 useless extension candidates. Maximal degree in co-relation 10738. Up to 488 conditions per place. [2021-11-02 22:16:00,730 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 81 selfloop transitions, 91 changer transitions 1/267 dead transitions. [2021-11-02 22:16:00,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 267 transitions, 2873 flow [2021-11-02 22:16:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:16:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-11-02 22:16:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 781 transitions. [2021-11-02 22:16:00,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8326226012793176 [2021-11-02 22:16:00,735 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 781 transitions. [2021-11-02 22:16:00,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 781 transitions. [2021-11-02 22:16:00,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:16:00,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 781 transitions. [2021-11-02 22:16:00,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.57142857142857) internal successors, (781), 7 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:00,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:00,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 134.0) internal successors, (1072), 8 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:00,745 INFO L186 Difference]: Start difference. First operand has 171 places, 252 transitions, 2316 flow. Second operand 7 states and 781 transitions. [2021-11-02 22:16:00,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 267 transitions, 2873 flow [2021-11-02 22:16:00,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 267 transitions, 2729 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-11-02 22:16:00,794 INFO L242 Difference]: Finished difference. Result has 167 places, 252 transitions, 2537 flow [2021-11-02 22:16:00,795 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2537, PETRI_PLACES=167, PETRI_TRANSITIONS=252} [2021-11-02 22:16:00,795 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 38 predicate places. [2021-11-02 22:16:00,795 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 252 transitions, 2537 flow [2021-11-02 22:16:00,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:00,796 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:16:00,796 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:00,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:16:00,797 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:16:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1383671908, now seen corresponding path program 10 times [2021-11-02 22:16:00,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:00,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991653210] [2021-11-02 22:16:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:00,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:01,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:01,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991653210] [2021-11-02 22:16:01,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991653210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:01,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:01,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:16:01,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091051698] [2021-11-02 22:16:01,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:16:01,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:16:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:16:01,012 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:16:01,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 252 transitions, 2537 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:01,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:16:01,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:16:01,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:16:01,903 INFO L129 PetriNetUnfolder]: 661/2307 cut-off events. [2021-11-02 22:16:01,903 INFO L130 PetriNetUnfolder]: For 18791/29337 co-relation queries the response was YES. [2021-11-02 22:16:01,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10552 conditions, 2307 events. 661/2307 cut-off events. For 18791/29337 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 19664 event pairs, 60 based on Foata normal form. 391/2613 useless extension candidates. Maximal degree in co-relation 10129. Up to 478 conditions per place. [2021-11-02 22:16:01,944 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 65 selfloop transitions, 132 changer transitions 9/300 dead transitions. [2021-11-02 22:16:01,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 300 transitions, 3448 flow [2021-11-02 22:16:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:16:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 22:16:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1124 transitions. [2021-11-02 22:16:01,951 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8388059701492537 [2021-11-02 22:16:01,951 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1124 transitions. [2021-11-02 22:16:01,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1124 transitions. [2021-11-02 22:16:01,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:16:01,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1124 transitions. [2021-11-02 22:16:01,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.4) internal successors, (1124), 10 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:01,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:01,964 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:01,964 INFO L186 Difference]: Start difference. First operand has 167 places, 252 transitions, 2537 flow. Second operand 10 states and 1124 transitions. [2021-11-02 22:16:01,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 300 transitions, 3448 flow [2021-11-02 22:16:02,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 300 transitions, 3285 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-11-02 22:16:02,010 INFO L242 Difference]: Finished difference. Result has 173 places, 259 transitions, 2808 flow [2021-11-02 22:16:02,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2808, PETRI_PLACES=173, PETRI_TRANSITIONS=259} [2021-11-02 22:16:02,013 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 44 predicate places. [2021-11-02 22:16:02,013 INFO L470 AbstractCegarLoop]: Abstraction has has 173 places, 259 transitions, 2808 flow [2021-11-02 22:16:02,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:02,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:16:02,014 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:02,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:16:02,015 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:16:02,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:02,017 INFO L85 PathProgramCache]: Analyzing trace with hash 761347908, now seen corresponding path program 11 times [2021-11-02 22:16:02,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:02,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998110166] [2021-11-02 22:16:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:02,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:02,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:02,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998110166] [2021-11-02 22:16:02,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998110166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:02,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:02,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:16:02,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657515129] [2021-11-02 22:16:02,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:16:02,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:16:02,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:16:02,227 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:16:02,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 259 transitions, 2808 flow. Second operand has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:02,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:16:02,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:16:02,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:16:02,869 INFO L129 PetriNetUnfolder]: 427/1655 cut-off events. [2021-11-02 22:16:02,869 INFO L130 PetriNetUnfolder]: For 15031/26154 co-relation queries the response was YES. [2021-11-02 22:16:02,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8341 conditions, 1655 events. 427/1655 cut-off events. For 15031/26154 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13247 event pairs, 26 based on Foata normal form. 378/1976 useless extension candidates. Maximal degree in co-relation 8031. Up to 385 conditions per place. [2021-11-02 22:16:02,894 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 61 selfloop transitions, 124 changer transitions 27/306 dead transitions. [2021-11-02 22:16:02,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 306 transitions, 3807 flow [2021-11-02 22:16:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:16:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-02 22:16:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1122 transitions. [2021-11-02 22:16:02,902 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8373134328358209 [2021-11-02 22:16:02,902 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1122 transitions. [2021-11-02 22:16:02,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1122 transitions. [2021-11-02 22:16:02,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:16:02,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1122 transitions. [2021-11-02 22:16:02,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.2) internal successors, (1122), 10 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:02,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:02,916 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 134.0) internal successors, (1474), 11 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:02,916 INFO L186 Difference]: Start difference. First operand has 173 places, 259 transitions, 2808 flow. Second operand 10 states and 1122 transitions. [2021-11-02 22:16:02,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 306 transitions, 3807 flow [2021-11-02 22:16:02,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 306 transitions, 3414 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-11-02 22:16:02,967 INFO L242 Difference]: Finished difference. Result has 176 places, 250 transitions, 2642 flow [2021-11-02 22:16:02,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2642, PETRI_PLACES=176, PETRI_TRANSITIONS=250} [2021-11-02 22:16:02,968 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 47 predicate places. [2021-11-02 22:16:02,969 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 250 transitions, 2642 flow [2021-11-02 22:16:02,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 105.88888888888889) internal successors, (953), 9 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:02,970 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:16:02,970 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:02,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:16:02,971 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:16:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1529713992, now seen corresponding path program 12 times [2021-11-02 22:16:02,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:02,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232473352] [2021-11-02 22:16:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:02,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:03,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:03,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232473352] [2021-11-02 22:16:03,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232473352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:03,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:03,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 22:16:03,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957128073] [2021-11-02 22:16:03,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:16:03,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:16:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:16:03,171 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:16:03,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 250 transitions, 2642 flow. Second operand has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:03,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:16:03,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:16:03,174 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:16:03,847 INFO L129 PetriNetUnfolder]: 346/1481 cut-off events. [2021-11-02 22:16:03,847 INFO L130 PetriNetUnfolder]: For 12056/18003 co-relation queries the response was YES. [2021-11-02 22:16:03,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1481 events. 346/1481 cut-off events. For 12056/18003 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11857 event pairs, 26 based on Foata normal form. 210/1646 useless extension candidates. Maximal degree in co-relation 6835. Up to 322 conditions per place. [2021-11-02 22:16:03,873 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 45 selfloop transitions, 125 changer transitions 27/291 dead transitions. [2021-11-02 22:16:03,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 291 transitions, 3459 flow [2021-11-02 22:16:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:16:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-02 22:16:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1223 transitions. [2021-11-02 22:16:03,878 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8297150610583447 [2021-11-02 22:16:03,878 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1223 transitions. [2021-11-02 22:16:03,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1223 transitions. [2021-11-02 22:16:03,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:16:03,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1223 transitions. [2021-11-02 22:16:03,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.18181818181819) internal successors, (1223), 11 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:03,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:03,894 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 134.0) internal successors, (1608), 12 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:03,894 INFO L186 Difference]: Start difference. First operand has 176 places, 250 transitions, 2642 flow. Second operand 11 states and 1223 transitions. [2021-11-02 22:16:03,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 291 transitions, 3459 flow [2021-11-02 22:16:03,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 291 transitions, 3337 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-02 22:16:03,942 INFO L242 Difference]: Finished difference. Result has 182 places, 238 transitions, 2565 flow [2021-11-02 22:16:03,943 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2565, PETRI_PLACES=182, PETRI_TRANSITIONS=238} [2021-11-02 22:16:03,943 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 53 predicate places. [2021-11-02 22:16:03,944 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 238 transitions, 2565 flow [2021-11-02 22:16:03,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.6) internal successors, (1056), 10 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:03,945 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:16:03,946 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:03,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:16:03,946 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:16:03,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:03,947 INFO L85 PathProgramCache]: Analyzing trace with hash 878348, now seen corresponding path program 13 times [2021-11-02 22:16:03,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:03,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435218318] [2021-11-02 22:16:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:03,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:04,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:04,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435218318] [2021-11-02 22:16:04,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435218318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:04,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:04,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:16:04,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732872341] [2021-11-02 22:16:04,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:16:04,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:04,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:16:04,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:16:04,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 134 [2021-11-02 22:16:04,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 238 transitions, 2565 flow. Second operand has 11 states, 11 states have (on average 97.18181818181819) internal successors, (1069), 11 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:04,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:16:04,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 134 [2021-11-02 22:16:04,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:16:05,322 INFO L129 PetriNetUnfolder]: 573/1903 cut-off events. [2021-11-02 22:16:05,322 INFO L130 PetriNetUnfolder]: For 17111/26718 co-relation queries the response was YES. [2021-11-02 22:16:05,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1903 events. 573/1903 cut-off events. For 17111/26718 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14816 event pairs, 109 based on Foata normal form. 59/1929 useless extension candidates. Maximal degree in co-relation 9847. Up to 446 conditions per place. [2021-11-02 22:16:05,358 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 143 selfloop transitions, 112 changer transitions 34/368 dead transitions. [2021-11-02 22:16:05,358 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 368 transitions, 4484 flow [2021-11-02 22:16:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:16:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-02 22:16:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1466 transitions. [2021-11-02 22:16:05,363 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7814498933901919 [2021-11-02 22:16:05,363 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1466 transitions. [2021-11-02 22:16:05,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1466 transitions. [2021-11-02 22:16:05,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:16:05,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1466 transitions. [2021-11-02 22:16:05,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 104.71428571428571) internal successors, (1466), 14 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:05,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:05,375 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:05,376 INFO L186 Difference]: Start difference. First operand has 182 places, 238 transitions, 2565 flow. Second operand 14 states and 1466 transitions. [2021-11-02 22:16:05,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 368 transitions, 4484 flow [2021-11-02 22:16:05,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 368 transitions, 4248 flow, removed 18 selfloop flow, removed 7 redundant places. [2021-11-02 22:16:05,452 INFO L242 Difference]: Finished difference. Result has 193 places, 260 transitions, 3190 flow [2021-11-02 22:16:05,452 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3190, PETRI_PLACES=193, PETRI_TRANSITIONS=260} [2021-11-02 22:16:05,453 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 64 predicate places. [2021-11-02 22:16:05,453 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 260 transitions, 3190 flow [2021-11-02 22:16:05,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 97.18181818181819) internal successors, (1069), 11 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:05,454 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:16:05,455 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:05,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:16:05,455 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:16:05,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash -871472488, now seen corresponding path program 14 times [2021-11-02 22:16:05,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:05,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743004551] [2021-11-02 22:16:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:05,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:05,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:05,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743004551] [2021-11-02 22:16:05,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743004551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:05,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:05,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:16:05,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722120929] [2021-11-02 22:16:05,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:16:05,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:05,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:16:05,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:16:05,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:16:05,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 260 transitions, 3190 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:05,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:16:05,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:16:05,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:16:06,325 INFO L129 PetriNetUnfolder]: 299/1417 cut-off events. [2021-11-02 22:16:06,325 INFO L130 PetriNetUnfolder]: For 16594/22016 co-relation queries the response was YES. [2021-11-02 22:16:06,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7198 conditions, 1417 events. 299/1417 cut-off events. For 16594/22016 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11575 event pairs, 32 based on Foata normal form. 227/1601 useless extension candidates. Maximal degree in co-relation 6892. Up to 270 conditions per place. [2021-11-02 22:16:06,349 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 42 selfloop transitions, 139 changer transitions 34/309 dead transitions. [2021-11-02 22:16:06,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 309 transitions, 4164 flow [2021-11-02 22:16:06,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:16:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-02 22:16:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1548 transitions. [2021-11-02 22:16:06,355 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8251599147121536 [2021-11-02 22:16:06,355 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1548 transitions. [2021-11-02 22:16:06,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1548 transitions. [2021-11-02 22:16:06,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:16:06,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1548 transitions. [2021-11-02 22:16:06,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.57142857142857) internal successors, (1548), 14 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:06,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:06,367 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:06,367 INFO L186 Difference]: Start difference. First operand has 193 places, 260 transitions, 3190 flow. Second operand 14 states and 1548 transitions. [2021-11-02 22:16:06,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 309 transitions, 4164 flow [2021-11-02 22:16:06,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 309 transitions, 4095 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-11-02 22:16:06,435 INFO L242 Difference]: Finished difference. Result has 202 places, 252 transitions, 3261 flow [2021-11-02 22:16:06,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=3130, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3261, PETRI_PLACES=202, PETRI_TRANSITIONS=252} [2021-11-02 22:16:06,436 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 73 predicate places. [2021-11-02 22:16:06,436 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 252 transitions, 3261 flow [2021-11-02 22:16:06,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:06,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:16:06,438 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:06,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:16:06,438 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:16:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -745961090, now seen corresponding path program 15 times [2021-11-02 22:16:06,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:06,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947143488] [2021-11-02 22:16:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:06,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:06,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:06,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947143488] [2021-11-02 22:16:06,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947143488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:06,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:06,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:16:06,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495361567] [2021-11-02 22:16:06,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:16:06,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:16:06,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:16:06,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:16:06,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 252 transitions, 3261 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:06,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:16:06,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:16:06,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:16:07,286 INFO L129 PetriNetUnfolder]: 267/1330 cut-off events. [2021-11-02 22:16:07,286 INFO L130 PetriNetUnfolder]: For 17828/23128 co-relation queries the response was YES. [2021-11-02 22:16:07,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1330 events. 267/1330 cut-off events. For 17828/23128 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10862 event pairs, 29 based on Foata normal form. 242/1534 useless extension candidates. Maximal degree in co-relation 6792. Up to 245 conditions per place. [2021-11-02 22:16:07,306 INFO L132 encePairwiseOnDemand]: 122/134 looper letters, 45 selfloop transitions, 139 changer transitions 21/298 dead transitions. [2021-11-02 22:16:07,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 298 transitions, 4209 flow [2021-11-02 22:16:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:16:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-02 22:16:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1546 transitions. [2021-11-02 22:16:07,315 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.82409381663113 [2021-11-02 22:16:07,316 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1546 transitions. [2021-11-02 22:16:07,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1546 transitions. [2021-11-02 22:16:07,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:16:07,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1546 transitions. [2021-11-02 22:16:07,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.42857142857143) internal successors, (1546), 14 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:07,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:07,333 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:07,333 INFO L186 Difference]: Start difference. First operand has 202 places, 252 transitions, 3261 flow. Second operand 14 states and 1546 transitions. [2021-11-02 22:16:07,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 298 transitions, 4209 flow [2021-11-02 22:16:07,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 298 transitions, 3889 flow, removed 9 selfloop flow, removed 11 redundant places. [2021-11-02 22:16:07,400 INFO L242 Difference]: Finished difference. Result has 203 places, 249 transitions, 3206 flow [2021-11-02 22:16:07,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3206, PETRI_PLACES=203, PETRI_TRANSITIONS=249} [2021-11-02 22:16:07,401 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 74 predicate places. [2021-11-02 22:16:07,401 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 249 transitions, 3206 flow [2021-11-02 22:16:07,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:07,402 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-02 22:16:07,402 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:07,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:16:07,402 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-11-02 22:16:07,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2086497558, now seen corresponding path program 16 times [2021-11-02 22:16:07,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:07,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592692405] [2021-11-02 22:16:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:07,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:07,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:16:07,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592692405] [2021-11-02 22:16:07,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592692405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:07,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:07,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 22:16:07,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132624494] [2021-11-02 22:16:07,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:16:07,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:16:07,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:16:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:16:07,618 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 134 [2021-11-02 22:16:07,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 249 transitions, 3206 flow. Second operand has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:07,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-02 22:16:07,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 134 [2021-11-02 22:16:07,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-02 22:16:07,991 INFO L129 PetriNetUnfolder]: 52/341 cut-off events. [2021-11-02 22:16:07,991 INFO L130 PetriNetUnfolder]: For 4876/5783 co-relation queries the response was YES. [2021-11-02 22:16:07,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 341 events. 52/341 cut-off events. For 4876/5783 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1841 event pairs, 0 based on Foata normal form. 133/470 useless extension candidates. Maximal degree in co-relation 2098. Up to 85 conditions per place. [2021-11-02 22:16:07,995 INFO L132 encePairwiseOnDemand]: 124/134 looper letters, 0 selfloop transitions, 0 changer transitions 169/169 dead transitions. [2021-11-02 22:16:07,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 2181 flow [2021-11-02 22:16:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:16:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-02 22:16:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1506 transitions. [2021-11-02 22:16:07,999 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.802771855010661 [2021-11-02 22:16:08,000 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1506 transitions. [2021-11-02 22:16:08,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1506 transitions. [2021-11-02 22:16:08,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:16:08,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1506 transitions. [2021-11-02 22:16:08,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.57142857142857) internal successors, (1506), 14 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:08,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:08,011 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 134.0) internal successors, (2010), 15 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:08,013 INFO L186 Difference]: Start difference. First operand has 203 places, 249 transitions, 3206 flow. Second operand 14 states and 1506 transitions. [2021-11-02 22:16:08,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 2181 flow [2021-11-02 22:16:08,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 169 transitions, 2000 flow, removed 17 selfloop flow, removed 15 redundant places. [2021-11-02 22:16:08,042 INFO L242 Difference]: Finished difference. Result has 174 places, 0 transitions, 0 flow [2021-11-02 22:16:08,042 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=174, PETRI_TRANSITIONS=0} [2021-11-02 22:16:08,043 INFO L334 CegarLoopForPetriNet]: 129 programPoint places, 45 predicate places. [2021-11-02 22:16:08,044 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 0 transitions, 0 flow [2021-11-02 22:16:08,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.36363636363636) internal successors, (1159), 11 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:08,048 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:16:08,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-02 22:16:08,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-02 22:16:08,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-11-02 22:16:08,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-11-02 22:16:08,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:16:08,056 INFO L731 BasicCegarLoop]: Path program histogram: [16] [2021-11-02 22:16:08,064 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-02 22:16:08,065 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:16:08,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:16:08 BasicIcfg [2021-11-02 22:16:08,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:16:08,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:16:08,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:16:08,071 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:16:08,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:15:44" (3/4) ... [2021-11-02 22:16:08,075 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:16:08,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-02 22:16:08,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-02 22:16:08,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-02 22:16:08,085 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-11-02 22:16:08,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-02 22:16:08,096 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 22:16:08,097 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:16:08,097 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:16:08,173 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:16:08,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:16:08,175 INFO L168 Benchmark]: Toolchain (without parser) took 25496.27 ms. Allocated memory was 96.5 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 64.0 MB in the beginning and 430.2 MB in the end (delta: -366.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 16.1 GB. [2021-11-02 22:16:08,176 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:16:08,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 425.44 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.8 MB in the beginning and 91.2 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:08,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.28 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 89.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:08,178 INFO L168 Benchmark]: Boogie Preprocessor took 54.17 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 87.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:16:08,178 INFO L168 Benchmark]: RCFGBuilder took 898.85 ms. Allocated memory is still 117.4 MB. Free memory was 87.5 MB in the beginning and 67.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:08,179 INFO L168 Benchmark]: TraceAbstraction took 23945.69 ms. Allocated memory was 117.4 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 66.9 MB in the beginning and 433.4 MB in the end (delta: -366.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. [2021-11-02 22:16:08,179 INFO L168 Benchmark]: Witness Printer took 102.94 ms. Allocated memory is still 1.6 GB. Free memory was 433.4 MB in the beginning and 430.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:08,182 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 425.44 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.8 MB in the beginning and 91.2 MB in the end (delta: -27.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.28 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 89.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.17 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 87.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 898.85 ms. Allocated memory is still 117.4 MB. Free memory was 87.5 MB in the beginning and 67.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23945.69 ms. Allocated memory was 117.4 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 66.9 MB in the beginning and 433.4 MB in the end (delta: -366.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.1 GB. * Witness Printer took 102.94 ms. Allocated memory is still 1.6 GB. Free memory was 433.4 MB in the beginning and 430.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 146]: 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 with 1 thread instances CFG has 9 procedures, 166 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.6s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 18.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 541 SDslu, 566 SDs, 0 SdLazy, 2825 SolverSat, 573 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3261occurred in iteration=14, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1824 NumberOfCodeBlocks, 1824 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1808 ConstructedInterpolants, 0 QuantifiedInterpolants, 4966 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-02 22:16:08,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16b479d7-e126-45eb-9b0c-ba99a4d02627/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE