./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be --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 9aa17fef9ac46070b7bee497b29e6b2bfca553e9cde26e85393d7783524fde38 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:30:35,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:30:35,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:30:35,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:30:35,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:30:35,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:30:35,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:30:35,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:30:35,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:30:35,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:30:35,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:30:35,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:30:35,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:30:35,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:30:35,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:30:35,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:30:35,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:30:35,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:30:35,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:30:35,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:30:35,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:30:35,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:30:35,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:30:35,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:30:35,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:30:35,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:30:35,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:30:35,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:30:35,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:30:35,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:30:35,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:30:35,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:30:35,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:30:35,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:30:35,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:30:35,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:30:35,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:30:35,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:30:35,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:30:35,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:30:35,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:30:35,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:30:35,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:30:35,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:30:35,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:30:35,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:30:35,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:30:35,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:30:35,225 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:30:35,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:30:35,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:30:35,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:30:35,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:30:35,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:30:35,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:30:35,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:30:35,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:30:35,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:30:35,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:30:35,227 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:30:35,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:30:35,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:30:35,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:30:35,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:30:35,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:30:35,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:30:35,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:30:35,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:30:35,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:30:35,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:30:35,229 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:30:35,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:30:35,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:30:35,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:30:35,230 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_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aa17fef9ac46070b7bee497b29e6b2bfca553e9cde26e85393d7783524fde38 [2021-10-21 20:30:35,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:30:35,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:30:35,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:30:35,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:30:35,501 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:30:35,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-10-21 20:30:35,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/data/647e8b133/cde12cc75e804c7388ca5d7d853d61e4/FLAG8a2845b23 [2021-10-21 20:30:36,073 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:30:36,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c [2021-10-21 20:30:36,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/data/647e8b133/cde12cc75e804c7388ca5d7d853d61e4/FLAG8a2845b23 [2021-10-21 20:30:36,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/data/647e8b133/cde12cc75e804c7388ca5d7d853d61e4 [2021-10-21 20:30:36,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:30:36,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:30:36,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:30:36,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:30:36,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:30:36,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b92018c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36, skipping insertion in model container [2021-10-21 20:30:36,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:30:36,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:30:36,687 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_4e0194e9-2a3b-4f53-b078-909acaba1557/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[2529,2542] [2021-10-21 20:30:36,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:30:36,704 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:30:36,731 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_4e0194e9-2a3b-4f53-b078-909acaba1557/sv-benchmarks/c/weaver/parallel-ticket-3.wvr.c[2529,2542] [2021-10-21 20:30:36,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:30:36,747 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:30:36,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36 WrapperNode [2021-10-21 20:30:36,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:30:36,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:30:36,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:30:36,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:30:36,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:30:36,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:30:36,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:30:36,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:30:36,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:30:36,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:30:36,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:30:36,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:30:36,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (1/1) ... [2021-10-21 20:30:36,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:30:36,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:36,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:30:36,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:30:36,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-21 20:30:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-21 20:30:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-21 20:30:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-21 20:30:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-21 20:30:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-21 20:30:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:30:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:30:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:30:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-21 20:30:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-21 20:30:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:30:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:30:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:30:36,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:30:36,950 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 20:30:37,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:30:37,459 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-21 20:30:37,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:37 BoogieIcfgContainer [2021-10-21 20:30:37,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:30:37,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:30:37,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:30:37,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:30:37,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:30:36" (1/3) ... [2021-10-21 20:30:37,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195ed91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:30:37, skipping insertion in model container [2021-10-21 20:30:37,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:36" (2/3) ... [2021-10-21 20:30:37,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195ed91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:30:37, skipping insertion in model container [2021-10-21 20:30:37,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:37" (3/3) ... [2021-10-21 20:30:37,473 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2021-10-21 20:30:37,479 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 20:30:37,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:30:37,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:30:37,480 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 20:30:37,526 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,527 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,528 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,528 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,529 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,529 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,530 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,530 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,530 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,530 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,531 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,531 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,531 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,532 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,533 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,534 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,535 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,536 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,536 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,536 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,537 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,537 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,537 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,538 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,539 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,539 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,540 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,541 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,542 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,542 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,543 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,543 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,543 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,543 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,544 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,544 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,544 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,545 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,545 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,545 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,545 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,546 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,546 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,546 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,547 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,547 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,547 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,548 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,548 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,548 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,549 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,549 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,549 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,549 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,553 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,554 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,555 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,557 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,561 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,562 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,562 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,562 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,563 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,563 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 20:30:37,574 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-21 20:30:37,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:30:37,640 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 [2021-10-21 20:30:37,640 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 20:30:37,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 137 places, 132 transitions, 288 flow [2021-10-21 20:30:37,739 INFO L129 PetriNetUnfolder]: 5/129 cut-off events. [2021-10-21 20:30:37,739 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 20:30:37,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 5/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2021-10-21 20:30:37,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 132 transitions, 288 flow [2021-10-21 20:30:37,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 119 transitions, 256 flow [2021-10-21 20:30:37,810 INFO L129 PetriNetUnfolder]: 5/118 cut-off events. [2021-10-21 20:30:37,811 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 20:30:37,811 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:37,812 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] [2021-10-21 20:30:37,812 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:37,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:37,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1140196171, now seen corresponding path program 1 times [2021-10-21 20:30:37,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:37,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069061708] [2021-10-21 20:30:37,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:37,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:38,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:38,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069061708] [2021-10-21 20:30:38,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069061708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:38,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:38,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:30:38,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094078208] [2021-10-21 20:30:38,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:30:38,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:30:38,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:30:38,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 132 [2021-10-21 20:30:38,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 119 transitions, 256 flow. Second operand has 10 states, 10 states have (on average 109.6) internal successors, (1096), 10 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:38,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:38,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 132 [2021-10-21 20:30:38,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:39,297 INFO L129 PetriNetUnfolder]: 10/217 cut-off events. [2021-10-21 20:30:39,298 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-10-21 20:30:39,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 217 events. 10/217 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 648 event pairs, 5 based on Foata normal form. 21/231 useless extension candidates. Maximal degree in co-relation 180. Up to 22 conditions per place. [2021-10-21 20:30:39,304 INFO L132 encePairwiseOnDemand]: 113/132 looper letters, 10 selfloop transitions, 11 changer transitions 12/128 dead transitions. [2021-10-21 20:30:39,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 338 flow [2021-10-21 20:30:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:30:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 20:30:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1344 transitions. [2021-10-21 20:30:39,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8484848484848485 [2021-10-21 20:30:39,337 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1344 transitions. [2021-10-21 20:30:39,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1344 transitions. [2021-10-21 20:30:39,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:39,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1344 transitions. [2021-10-21 20:30:39,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:39,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 132.0) internal successors, (1716), 13 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:39,368 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 132.0) internal successors, (1716), 13 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:39,370 INFO L186 Difference]: Start difference. First operand has 124 places, 119 transitions, 256 flow. Second operand 12 states and 1344 transitions. [2021-10-21 20:30:39,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 338 flow [2021-10-21 20:30:39,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 128 transitions, 326 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-21 20:30:39,381 INFO L242 Difference]: Finished difference. Result has 133 places, 116 transitions, 277 flow [2021-10-21 20:30:39,383 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=277, PETRI_PLACES=133, PETRI_TRANSITIONS=116} [2021-10-21 20:30:39,384 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 9 predicate places. [2021-10-21 20:30:39,385 INFO L470 AbstractCegarLoop]: Abstraction has has 133 places, 116 transitions, 277 flow [2021-10-21 20:30:39,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.6) internal successors, (1096), 10 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:39,386 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:39,387 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] [2021-10-21 20:30:39,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:30:39,387 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:39,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1329798105, now seen corresponding path program 2 times [2021-10-21 20:30:39,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:39,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227049961] [2021-10-21 20:30:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:39,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:39,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:39,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227049961] [2021-10-21 20:30:39,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227049961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:39,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:39,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 20:30:39,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682192474] [2021-10-21 20:30:39,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:30:39,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:30:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:30:39,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 132 [2021-10-21 20:30:39,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 116 transitions, 277 flow. Second operand has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:39,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:39,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 132 [2021-10-21 20:30:39,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:40,198 INFO L129 PetriNetUnfolder]: 554/1492 cut-off events. [2021-10-21 20:30:40,198 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-10-21 20:30:40,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2550 conditions, 1492 events. 554/1492 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10004 event pairs, 155 based on Foata normal form. 0/1390 useless extension candidates. Maximal degree in co-relation 2539. Up to 301 conditions per place. [2021-10-21 20:30:40,215 INFO L132 encePairwiseOnDemand]: 119/132 looper letters, 46 selfloop transitions, 12 changer transitions 57/200 dead transitions. [2021-10-21 20:30:40,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 200 transitions, 677 flow [2021-10-21 20:30:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:30:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 20:30:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1326 transitions. [2021-10-21 20:30:40,221 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-10-21 20:30:40,221 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1326 transitions. [2021-10-21 20:30:40,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1326 transitions. [2021-10-21 20:30:40,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:40,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1326 transitions. [2021-10-21 20:30:40,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 102.0) internal successors, (1326), 13 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,236 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,237 INFO L186 Difference]: Start difference. First operand has 133 places, 116 transitions, 277 flow. Second operand 13 states and 1326 transitions. [2021-10-21 20:30:40,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 200 transitions, 677 flow [2021-10-21 20:30:40,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 200 transitions, 667 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-10-21 20:30:40,245 INFO L242 Difference]: Finished difference. Result has 139 places, 124 transitions, 343 flow [2021-10-21 20:30:40,246 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=120, 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=13, PETRI_FLOW=343, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2021-10-21 20:30:40,246 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 15 predicate places. [2021-10-21 20:30:40,246 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 343 flow [2021-10-21 20:30:40,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:40,248 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] [2021-10-21 20:30:40,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:30:40,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:40,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1118933171, now seen corresponding path program 3 times [2021-10-21 20:30:40,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:40,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414753983] [2021-10-21 20:30:40,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:40,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:40,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:40,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:40,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414753983] [2021-10-21 20:30:40,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414753983] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:40,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:40,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:30:40,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697414442] [2021-10-21 20:30:40,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:30:40,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:40,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:30:40,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:30:40,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 132 [2021-10-21 20:30:40,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 343 flow. Second operand has 10 states, 10 states have (on average 109.6) internal successors, (1096), 10 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:40,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 132 [2021-10-21 20:30:40,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:40,781 INFO L129 PetriNetUnfolder]: 40/417 cut-off events. [2021-10-21 20:30:40,781 INFO L130 PetriNetUnfolder]: For 58/67 co-relation queries the response was YES. [2021-10-21 20:30:40,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 417 events. 40/417 cut-off events. For 58/67 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2180 event pairs, 5 based on Foata normal form. 4/415 useless extension candidates. Maximal degree in co-relation 543. Up to 57 conditions per place. [2021-10-21 20:30:40,786 INFO L132 encePairwiseOnDemand]: 121/132 looper letters, 14 selfloop transitions, 11 changer transitions 6/134 dead transitions. [2021-10-21 20:30:40,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 439 flow [2021-10-21 20:30:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:30:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 20:30:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1108 transitions. [2021-10-21 20:30:40,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8393939393939394 [2021-10-21 20:30:40,792 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1108 transitions. [2021-10-21 20:30:40,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1108 transitions. [2021-10-21 20:30:40,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:40,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1108 transitions. [2021-10-21 20:30:40,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 110.8) internal successors, (1108), 10 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,805 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,805 INFO L186 Difference]: Start difference. First operand has 139 places, 124 transitions, 343 flow. Second operand 10 states and 1108 transitions. [2021-10-21 20:30:40,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 439 flow [2021-10-21 20:30:40,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 134 transitions, 427 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-10-21 20:30:40,817 INFO L242 Difference]: Finished difference. Result has 140 places, 128 transitions, 392 flow [2021-10-21 20:30:40,817 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=392, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2021-10-21 20:30:40,818 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 16 predicate places. [2021-10-21 20:30:40,818 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 392 flow [2021-10-21 20:30:40,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.6) internal successors, (1096), 10 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:40,819 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] [2021-10-21 20:30:40,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:30:40,820 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:40,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:40,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2114683115, now seen corresponding path program 4 times [2021-10-21 20:30:40,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:40,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823892710] [2021-10-21 20:30:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:40,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:41,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:41,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823892710] [2021-10-21 20:30:41,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823892710] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:41,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:41,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 20:30:41,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525985641] [2021-10-21 20:30:41,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:30:41,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:41,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:30:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:30:41,007 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 132 [2021-10-21 20:30:41,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 392 flow. Second operand has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:41,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:41,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 132 [2021-10-21 20:30:41,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:41,545 INFO L129 PetriNetUnfolder]: 471/1527 cut-off events. [2021-10-21 20:30:41,545 INFO L130 PetriNetUnfolder]: For 490/507 co-relation queries the response was YES. [2021-10-21 20:30:41,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 1527 events. 471/1527 cut-off events. For 490/507 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11451 event pairs, 91 based on Foata normal form. 3/1454 useless extension candidates. Maximal degree in co-relation 3125. Up to 289 conditions per place. [2021-10-21 20:30:41,559 INFO L132 encePairwiseOnDemand]: 119/132 looper letters, 43 selfloop transitions, 13 changer transitions 63/206 dead transitions. [2021-10-21 20:30:41,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 206 transitions, 885 flow [2021-10-21 20:30:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:30:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-21 20:30:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1323 transitions. [2021-10-21 20:30:41,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7709790209790209 [2021-10-21 20:30:41,565 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1323 transitions. [2021-10-21 20:30:41,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1323 transitions. [2021-10-21 20:30:41,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:41,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1323 transitions. [2021-10-21 20:30:41,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:41,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:41,583 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:41,583 INFO L186 Difference]: Start difference. First operand has 140 places, 128 transitions, 392 flow. Second operand 13 states and 1323 transitions. [2021-10-21 20:30:41,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 206 transitions, 885 flow [2021-10-21 20:30:41,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 206 transitions, 871 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-10-21 20:30:41,597 INFO L242 Difference]: Finished difference. Result has 151 places, 128 transitions, 427 flow [2021-10-21 20:30:41,598 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=427, PETRI_PLACES=151, PETRI_TRANSITIONS=128} [2021-10-21 20:30:41,600 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 27 predicate places. [2021-10-21 20:30:41,600 INFO L470 AbstractCegarLoop]: Abstraction has has 151 places, 128 transitions, 427 flow [2021-10-21 20:30:41,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:41,602 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:41,602 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] [2021-10-21 20:30:41,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:30:41,602 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:41,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1482413425, now seen corresponding path program 5 times [2021-10-21 20:30:41,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:41,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662186158] [2021-10-21 20:30:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:41,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:41,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:41,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662186158] [2021-10-21 20:30:41,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662186158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:41,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:41,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 20:30:41,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009089341] [2021-10-21 20:30:41,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:30:41,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:30:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:30:41,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 132 [2021-10-21 20:30:41,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 128 transitions, 427 flow. Second operand has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:41,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:41,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 132 [2021-10-21 20:30:41,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:42,160 INFO L129 PetriNetUnfolder]: 113/488 cut-off events. [2021-10-21 20:30:42,160 INFO L130 PetriNetUnfolder]: For 298/308 co-relation queries the response was YES. [2021-10-21 20:30:42,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 488 events. 113/488 cut-off events. For 298/308 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2405 event pairs, 19 based on Foata normal form. 23/499 useless extension candidates. Maximal degree in co-relation 1077. Up to 95 conditions per place. [2021-10-21 20:30:42,166 INFO L132 encePairwiseOnDemand]: 121/132 looper letters, 39 selfloop transitions, 14 changer transitions 33/167 dead transitions. [2021-10-21 20:30:42,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 167 transitions, 773 flow [2021-10-21 20:30:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:30:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-21 20:30:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1103 transitions. [2021-10-21 20:30:42,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.759641873278237 [2021-10-21 20:30:42,174 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1103 transitions. [2021-10-21 20:30:42,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1103 transitions. [2021-10-21 20:30:42,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:42,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1103 transitions. [2021-10-21 20:30:42,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 100.27272727272727) internal successors, (1103), 11 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,190 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,190 INFO L186 Difference]: Start difference. First operand has 151 places, 128 transitions, 427 flow. Second operand 11 states and 1103 transitions. [2021-10-21 20:30:42,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 167 transitions, 773 flow [2021-10-21 20:30:42,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 167 transitions, 718 flow, removed 6 selfloop flow, removed 14 redundant places. [2021-10-21 20:30:42,202 INFO L242 Difference]: Finished difference. Result has 144 places, 124 transitions, 406 flow [2021-10-21 20:30:42,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=406, PETRI_PLACES=144, PETRI_TRANSITIONS=124} [2021-10-21 20:30:42,203 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 20 predicate places. [2021-10-21 20:30:42,203 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 124 transitions, 406 flow [2021-10-21 20:30:42,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.33333333333333) internal successors, (867), 9 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:42,205 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] [2021-10-21 20:30:42,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 20:30:42,205 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:42,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:42,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1486167199, now seen corresponding path program 6 times [2021-10-21 20:30:42,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:42,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402844630] [2021-10-21 20:30:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:42,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:42,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:42,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402844630] [2021-10-21 20:30:42,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402844630] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:42,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:42,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:42,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715163921] [2021-10-21 20:30:42,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:42,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:42,447 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:42,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 124 transitions, 406 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:42,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:42,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:42,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:42,793 INFO L129 PetriNetUnfolder]: 127/495 cut-off events. [2021-10-21 20:30:42,793 INFO L130 PetriNetUnfolder]: For 348/348 co-relation queries the response was YES. [2021-10-21 20:30:42,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 495 events. 127/495 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2188 event pairs, 43 based on Foata normal form. 4/495 useless extension candidates. Maximal degree in co-relation 1140. Up to 161 conditions per place. [2021-10-21 20:30:42,800 INFO L132 encePairwiseOnDemand]: 119/132 looper letters, 51 selfloop transitions, 18 changer transitions 18/166 dead transitions. [2021-10-21 20:30:42,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 166 transitions, 733 flow [2021-10-21 20:30:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:30:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:30:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1542 transitions. [2021-10-21 20:30:42,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7301136363636364 [2021-10-21 20:30:42,807 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1542 transitions. [2021-10-21 20:30:42,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1542 transitions. [2021-10-21 20:30:42,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:42,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1542 transitions. [2021-10-21 20:30:42,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 96.375) internal successors, (1542), 16 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,823 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,823 INFO L186 Difference]: Start difference. First operand has 144 places, 124 transitions, 406 flow. Second operand 16 states and 1542 transitions. [2021-10-21 20:30:42,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 166 transitions, 733 flow [2021-10-21 20:30:42,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 166 transitions, 707 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-10-21 20:30:42,831 INFO L242 Difference]: Finished difference. Result has 155 places, 128 transitions, 482 flow [2021-10-21 20:30:42,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=482, PETRI_PLACES=155, PETRI_TRANSITIONS=128} [2021-10-21 20:30:42,832 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 31 predicate places. [2021-10-21 20:30:42,832 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 128 transitions, 482 flow [2021-10-21 20:30:42,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:42,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:42,833 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] [2021-10-21 20:30:42,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 20:30:42,833 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:42,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1762845811, now seen corresponding path program 7 times [2021-10-21 20:30:42,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:42,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838535954] [2021-10-21 20:30:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:42,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:42,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:42,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838535954] [2021-10-21 20:30:42,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838535954] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:42,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:42,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:42,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584063324] [2021-10-21 20:30:42,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:42,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:42,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:42,999 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:43,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 128 transitions, 482 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:43,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:43,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:43,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:43,563 INFO L129 PetriNetUnfolder]: 224/786 cut-off events. [2021-10-21 20:30:43,563 INFO L130 PetriNetUnfolder]: For 1148/1148 co-relation queries the response was YES. [2021-10-21 20:30:43,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2233 conditions, 786 events. 224/786 cut-off events. For 1148/1148 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4221 event pairs, 51 based on Foata normal form. 8/788 useless extension candidates. Maximal degree in co-relation 2212. Up to 174 conditions per place. [2021-10-21 20:30:43,575 INFO L132 encePairwiseOnDemand]: 118/132 looper letters, 71 selfloop transitions, 34 changer transitions 39/223 dead transitions. [2021-10-21 20:30:43,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 223 transitions, 1251 flow [2021-10-21 20:30:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 20:30:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-21 20:30:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2232 transitions. [2021-10-21 20:30:43,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7351778656126482 [2021-10-21 20:30:43,584 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2232 transitions. [2021-10-21 20:30:43,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2232 transitions. [2021-10-21 20:30:43,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:43,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2232 transitions. [2021-10-21 20:30:43,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 97.04347826086956) internal successors, (2232), 23 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:43,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 132.0) internal successors, (3168), 24 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:43,605 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 132.0) internal successors, (3168), 24 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:43,605 INFO L186 Difference]: Start difference. First operand has 155 places, 128 transitions, 482 flow. Second operand 23 states and 2232 transitions. [2021-10-21 20:30:43,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 223 transitions, 1251 flow [2021-10-21 20:30:43,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 223 transitions, 1159 flow, removed 25 selfloop flow, removed 9 redundant places. [2021-10-21 20:30:43,618 INFO L242 Difference]: Finished difference. Result has 176 places, 146 transitions, 684 flow [2021-10-21 20:30:43,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=684, PETRI_PLACES=176, PETRI_TRANSITIONS=146} [2021-10-21 20:30:43,618 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 52 predicate places. [2021-10-21 20:30:43,619 INFO L470 AbstractCegarLoop]: Abstraction has has 176 places, 146 transitions, 684 flow [2021-10-21 20:30:43,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:43,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:43,620 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] [2021-10-21 20:30:43,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 20:30:43,620 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash 282255605, now seen corresponding path program 8 times [2021-10-21 20:30:43,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:43,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389825028] [2021-10-21 20:30:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:43,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:43,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:43,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:43,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389825028] [2021-10-21 20:30:43,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389825028] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:43,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:43,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:43,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064108314] [2021-10-21 20:30:43,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:43,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:43,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:43,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:43,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 146 transitions, 684 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:43,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:43,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:43,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:44,362 INFO L129 PetriNetUnfolder]: 235/825 cut-off events. [2021-10-21 20:30:44,362 INFO L130 PetriNetUnfolder]: For 2824/2831 co-relation queries the response was YES. [2021-10-21 20:30:44,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 825 events. 235/825 cut-off events. For 2824/2831 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4479 event pairs, 63 based on Foata normal form. 10/828 useless extension candidates. Maximal degree in co-relation 2809. Up to 179 conditions per place. [2021-10-21 20:30:44,377 INFO L132 encePairwiseOnDemand]: 118/132 looper letters, 75 selfloop transitions, 48 changer transitions 25/227 dead transitions. [2021-10-21 20:30:44,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 227 transitions, 1539 flow [2021-10-21 20:30:44,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 20:30:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-21 20:30:44,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1849 transitions. [2021-10-21 20:30:44,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7372408293460925 [2021-10-21 20:30:44,385 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1849 transitions. [2021-10-21 20:30:44,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1849 transitions. [2021-10-21 20:30:44,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:44,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1849 transitions. [2021-10-21 20:30:44,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.3157894736842) internal successors, (1849), 19 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:44,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 132.0) internal successors, (2640), 20 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:44,403 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 132.0) internal successors, (2640), 20 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:44,403 INFO L186 Difference]: Start difference. First operand has 176 places, 146 transitions, 684 flow. Second operand 19 states and 1849 transitions. [2021-10-21 20:30:44,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 227 transitions, 1539 flow [2021-10-21 20:30:44,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 227 transitions, 1330 flow, removed 96 selfloop flow, removed 15 redundant places. [2021-10-21 20:30:44,424 INFO L242 Difference]: Finished difference. Result has 180 places, 161 transitions, 896 flow [2021-10-21 20:30:44,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=896, PETRI_PLACES=180, PETRI_TRANSITIONS=161} [2021-10-21 20:30:44,425 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 56 predicate places. [2021-10-21 20:30:44,425 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 161 transitions, 896 flow [2021-10-21 20:30:44,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:44,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:44,426 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] [2021-10-21 20:30:44,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 20:30:44,427 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:44,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:44,427 INFO L82 PathProgramCache]: Analyzing trace with hash 320770149, now seen corresponding path program 9 times [2021-10-21 20:30:44,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:44,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371361971] [2021-10-21 20:30:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:44,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:44,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:44,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:44,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371361971] [2021-10-21 20:30:44,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371361971] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:44,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:44,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 20:30:44,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704980842] [2021-10-21 20:30:44,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:30:44,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:30:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:30:44,598 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:44,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 161 transitions, 896 flow. Second operand has 10 states, 10 states have (on average 94.2) internal successors, (942), 10 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:44,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:44,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:44,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:45,063 INFO L129 PetriNetUnfolder]: 301/1053 cut-off events. [2021-10-21 20:30:45,064 INFO L130 PetriNetUnfolder]: For 4871/4905 co-relation queries the response was YES. [2021-10-21 20:30:45,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3737 conditions, 1053 events. 301/1053 cut-off events. For 4871/4905 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6908 event pairs, 84 based on Foata normal form. 11/1015 useless extension candidates. Maximal degree in co-relation 3703. Up to 221 conditions per place. [2021-10-21 20:30:45,084 INFO L132 encePairwiseOnDemand]: 118/132 looper letters, 69 selfloop transitions, 53 changer transitions 20/221 dead transitions. [2021-10-21 20:30:45,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 221 transitions, 1541 flow [2021-10-21 20:30:45,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:30:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-21 20:30:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1474 transitions. [2021-10-21 20:30:45,091 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2021-10-21 20:30:45,091 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1474 transitions. [2021-10-21 20:30:45,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1474 transitions. [2021-10-21 20:30:45,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:45,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1474 transitions. [2021-10-21 20:30:45,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 98.26666666666667) internal successors, (1474), 15 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) [2021-10-21 20:30:45,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 132.0) internal successors, (2112), 16 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:45,105 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 132.0) internal successors, (2112), 16 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:45,105 INFO L186 Difference]: Start difference. First operand has 180 places, 161 transitions, 896 flow. Second operand 15 states and 1474 transitions. [2021-10-21 20:30:45,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 221 transitions, 1541 flow [2021-10-21 20:30:45,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 221 transitions, 1434 flow, removed 41 selfloop flow, removed 11 redundant places. [2021-10-21 20:30:45,134 INFO L242 Difference]: Finished difference. Result has 183 places, 166 transitions, 997 flow [2021-10-21 20:30:45,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=997, PETRI_PLACES=183, PETRI_TRANSITIONS=166} [2021-10-21 20:30:45,135 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 59 predicate places. [2021-10-21 20:30:45,135 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 166 transitions, 997 flow [2021-10-21 20:30:45,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.2) internal successors, (942), 10 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:45,146 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:45,146 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] [2021-10-21 20:30:45,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 20:30:45,146 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:45,147 INFO L82 PathProgramCache]: Analyzing trace with hash -23663371, now seen corresponding path program 10 times [2021-10-21 20:30:45,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:45,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377906457] [2021-10-21 20:30:45,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:45,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:45,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:45,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377906457] [2021-10-21 20:30:45,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377906457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:45,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:45,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 20:30:45,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655560413] [2021-10-21 20:30:45,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:30:45,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:45,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:30:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:30:45,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:45,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 166 transitions, 997 flow. Second operand has 11 states, 11 states have (on average 93.9090909090909) internal successors, (1033), 11 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:45,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:45,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:45,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:45,804 INFO L129 PetriNetUnfolder]: 243/871 cut-off events. [2021-10-21 20:30:45,805 INFO L130 PetriNetUnfolder]: For 4557/4609 co-relation queries the response was YES. [2021-10-21 20:30:45,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 871 events. 243/871 cut-off events. For 4557/4609 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5274 event pairs, 53 based on Foata normal form. 26/855 useless extension candidates. Maximal degree in co-relation 3131. Up to 173 conditions per place. [2021-10-21 20:30:45,822 INFO L132 encePairwiseOnDemand]: 118/132 looper letters, 72 selfloop transitions, 46 changer transitions 17/214 dead transitions. [2021-10-21 20:30:45,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 214 transitions, 1513 flow [2021-10-21 20:30:45,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 20:30:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 20:30:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1754 transitions. [2021-10-21 20:30:45,828 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7382154882154882 [2021-10-21 20:30:45,828 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1754 transitions. [2021-10-21 20:30:45,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1754 transitions. [2021-10-21 20:30:45,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:45,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1754 transitions. [2021-10-21 20:30:45,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 97.44444444444444) internal successors, (1754), 18 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:45,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 132.0) internal successors, (2508), 19 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:45,841 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 132.0) internal successors, (2508), 19 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:45,841 INFO L186 Difference]: Start difference. First operand has 183 places, 166 transitions, 997 flow. Second operand 18 states and 1754 transitions. [2021-10-21 20:30:45,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 214 transitions, 1513 flow [2021-10-21 20:30:45,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 214 transitions, 1353 flow, removed 48 selfloop flow, removed 14 redundant places. [2021-10-21 20:30:45,868 INFO L242 Difference]: Finished difference. Result has 188 places, 158 transitions, 931 flow [2021-10-21 20:30:45,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=931, PETRI_PLACES=188, PETRI_TRANSITIONS=158} [2021-10-21 20:30:45,870 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 64 predicate places. [2021-10-21 20:30:45,870 INFO L470 AbstractCegarLoop]: Abstraction has has 188 places, 158 transitions, 931 flow [2021-10-21 20:30:45,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 93.9090909090909) internal successors, (1033), 11 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:45,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:45,871 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] [2021-10-21 20:30:45,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 20:30:45,871 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1935754509, now seen corresponding path program 11 times [2021-10-21 20:30:45,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:45,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542537729] [2021-10-21 20:30:45,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:45,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:46,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:46,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542537729] [2021-10-21 20:30:46,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542537729] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:46,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:46,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:46,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077035284] [2021-10-21 20:30:46,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:46,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:46,034 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:46,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 158 transitions, 931 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:46,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:46,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:46,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:46,552 INFO L129 PetriNetUnfolder]: 167/638 cut-off events. [2021-10-21 20:30:46,552 INFO L130 PetriNetUnfolder]: For 3499/3525 co-relation queries the response was YES. [2021-10-21 20:30:46,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 638 events. 167/638 cut-off events. For 3499/3525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3339 event pairs, 54 based on Foata normal form. 27/639 useless extension candidates. Maximal degree in co-relation 2351. Up to 149 conditions per place. [2021-10-21 20:30:46,564 INFO L132 encePairwiseOnDemand]: 118/132 looper letters, 61 selfloop transitions, 24 changer transitions 35/199 dead transitions. [2021-10-21 20:30:46,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 199 transitions, 1400 flow [2021-10-21 20:30:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 20:30:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-21 20:30:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2206 transitions. [2021-10-21 20:30:46,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7266139657444005 [2021-10-21 20:30:46,573 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2206 transitions. [2021-10-21 20:30:46,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2206 transitions. [2021-10-21 20:30:46,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:46,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2206 transitions. [2021-10-21 20:30:46,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 95.91304347826087) internal successors, (2206), 23 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:46,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 132.0) internal successors, (3168), 24 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:46,593 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 132.0) internal successors, (3168), 24 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:46,594 INFO L186 Difference]: Start difference. First operand has 188 places, 158 transitions, 931 flow. Second operand 23 states and 2206 transitions. [2021-10-21 20:30:46,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 199 transitions, 1400 flow [2021-10-21 20:30:46,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 199 transitions, 1245 flow, removed 36 selfloop flow, removed 20 redundant places. [2021-10-21 20:30:46,611 INFO L242 Difference]: Finished difference. Result has 198 places, 141 transitions, 709 flow [2021-10-21 20:30:46,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=709, PETRI_PLACES=198, PETRI_TRANSITIONS=141} [2021-10-21 20:30:46,612 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 74 predicate places. [2021-10-21 20:30:46,612 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 141 transitions, 709 flow [2021-10-21 20:30:46,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:46,613 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:46,613 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] [2021-10-21 20:30:46,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 20:30:46,613 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1044002411, now seen corresponding path program 12 times [2021-10-21 20:30:46,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:46,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948068359] [2021-10-21 20:30:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:46,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:46,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:46,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948068359] [2021-10-21 20:30:46,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948068359] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:46,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:46,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:46,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594825785] [2021-10-21 20:30:46,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:46,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:46,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:46,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:46,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 141 transitions, 709 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:46,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:46,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:46,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:47,173 INFO L129 PetriNetUnfolder]: 99/451 cut-off events. [2021-10-21 20:30:47,173 INFO L130 PetriNetUnfolder]: For 2191/2203 co-relation queries the response was YES. [2021-10-21 20:30:47,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 451 events. 99/451 cut-off events. For 2191/2203 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1941 event pairs, 52 based on Foata normal form. 10/449 useless extension candidates. Maximal degree in co-relation 1529. Up to 141 conditions per place. [2021-10-21 20:30:47,181 INFO L132 encePairwiseOnDemand]: 119/132 looper letters, 45 selfloop transitions, 16 changer transitions 21/161 dead transitions. [2021-10-21 20:30:47,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 161 transitions, 1020 flow [2021-10-21 20:30:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:30:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:30:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1531 transitions. [2021-10-21 20:30:47,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.724905303030303 [2021-10-21 20:30:47,186 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1531 transitions. [2021-10-21 20:30:47,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1531 transitions. [2021-10-21 20:30:47,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:47,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1531 transitions. [2021-10-21 20:30:47,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 95.6875) internal successors, (1531), 16 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:47,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:47,199 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:47,199 INFO L186 Difference]: Start difference. First operand has 198 places, 141 transitions, 709 flow. Second operand 16 states and 1531 transitions. [2021-10-21 20:30:47,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 161 transitions, 1020 flow [2021-10-21 20:30:47,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 161 transitions, 865 flow, removed 32 selfloop flow, removed 29 redundant places. [2021-10-21 20:30:47,215 INFO L242 Difference]: Finished difference. Result has 175 places, 131 transitions, 570 flow [2021-10-21 20:30:47,215 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=570, PETRI_PLACES=175, PETRI_TRANSITIONS=131} [2021-10-21 20:30:47,215 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 51 predicate places. [2021-10-21 20:30:47,216 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 131 transitions, 570 flow [2021-10-21 20:30:47,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:47,216 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:47,217 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] [2021-10-21 20:30:47,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 20:30:47,217 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:47,218 INFO L82 PathProgramCache]: Analyzing trace with hash -2092648697, now seen corresponding path program 13 times [2021-10-21 20:30:47,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:47,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634083336] [2021-10-21 20:30:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:47,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:47,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:47,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634083336] [2021-10-21 20:30:47,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634083336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:47,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:47,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:47,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401987580] [2021-10-21 20:30:47,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:47,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:47,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:47,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 131 transitions, 570 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:47,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:47,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:47,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:47,732 INFO L129 PetriNetUnfolder]: 50/277 cut-off events. [2021-10-21 20:30:47,732 INFO L130 PetriNetUnfolder]: For 756/764 co-relation queries the response was YES. [2021-10-21 20:30:47,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 277 events. 50/277 cut-off events. For 756/764 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 800 event pairs, 15 based on Foata normal form. 9/281 useless extension candidates. Maximal degree in co-relation 826. Up to 60 conditions per place. [2021-10-21 20:30:47,736 INFO L132 encePairwiseOnDemand]: 120/132 looper letters, 31 selfloop transitions, 11 changer transitions 22/141 dead transitions. [2021-10-21 20:30:47,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 141 transitions, 763 flow [2021-10-21 20:30:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:30:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-21 20:30:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1335 transitions. [2021-10-21 20:30:47,740 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7224025974025974 [2021-10-21 20:30:47,740 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1335 transitions. [2021-10-21 20:30:47,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1335 transitions. [2021-10-21 20:30:47,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:47,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1335 transitions. [2021-10-21 20:30:47,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 95.35714285714286) internal successors, (1335), 14 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:47,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 132.0) internal successors, (1980), 15 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:47,751 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 132.0) internal successors, (1980), 15 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:47,751 INFO L186 Difference]: Start difference. First operand has 175 places, 131 transitions, 570 flow. Second operand 14 states and 1335 transitions. [2021-10-21 20:30:47,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 141 transitions, 763 flow [2021-10-21 20:30:47,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 141 transitions, 651 flow, removed 24 selfloop flow, removed 18 redundant places. [2021-10-21 20:30:47,761 INFO L242 Difference]: Finished difference. Result has 165 places, 117 transitions, 420 flow [2021-10-21 20:30:47,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=420, PETRI_PLACES=165, PETRI_TRANSITIONS=117} [2021-10-21 20:30:47,762 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 41 predicate places. [2021-10-21 20:30:47,762 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 117 transitions, 420 flow [2021-10-21 20:30:47,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:47,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:47,764 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] [2021-10-21 20:30:47,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 20:30:47,764 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:47,765 INFO L82 PathProgramCache]: Analyzing trace with hash -408885421, now seen corresponding path program 14 times [2021-10-21 20:30:47,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:47,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939871361] [2021-10-21 20:30:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:47,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:47,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:47,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939871361] [2021-10-21 20:30:47,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939871361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:47,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:47,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:47,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124223952] [2021-10-21 20:30:47,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:47,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:47,922 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:47,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 117 transitions, 420 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:47,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:47,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:47,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:48,504 INFO L129 PetriNetUnfolder]: 174/644 cut-off events. [2021-10-21 20:30:48,504 INFO L130 PetriNetUnfolder]: For 737/737 co-relation queries the response was YES. [2021-10-21 20:30:48,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 644 events. 174/644 cut-off events. For 737/737 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3261 event pairs, 49 based on Foata normal form. 8/650 useless extension candidates. Maximal degree in co-relation 1635. Up to 136 conditions per place. [2021-10-21 20:30:48,515 INFO L132 encePairwiseOnDemand]: 118/132 looper letters, 63 selfloop transitions, 29 changer transitions 36/205 dead transitions. [2021-10-21 20:30:48,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 205 transitions, 1124 flow [2021-10-21 20:30:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 20:30:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-21 20:30:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2219 transitions. [2021-10-21 20:30:48,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7308959156785244 [2021-10-21 20:30:48,521 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2219 transitions. [2021-10-21 20:30:48,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2219 transitions. [2021-10-21 20:30:48,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:48,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2219 transitions. [2021-10-21 20:30:48,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 96.47826086956522) internal successors, (2219), 23 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:48,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 132.0) internal successors, (3168), 24 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:48,536 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 132.0) internal successors, (3168), 24 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:48,536 INFO L186 Difference]: Start difference. First operand has 165 places, 117 transitions, 420 flow. Second operand 23 states and 2219 transitions. [2021-10-21 20:30:48,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 205 transitions, 1124 flow [2021-10-21 20:30:48,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 205 transitions, 926 flow, removed 50 selfloop flow, removed 23 redundant places. [2021-10-21 20:30:48,548 INFO L242 Difference]: Finished difference. Result has 167 places, 136 transitions, 573 flow [2021-10-21 20:30:48,549 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=573, PETRI_PLACES=167, PETRI_TRANSITIONS=136} [2021-10-21 20:30:48,549 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 43 predicate places. [2021-10-21 20:30:48,549 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 136 transitions, 573 flow [2021-10-21 20:30:48,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:48,550 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:48,550 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] [2021-10-21 20:30:48,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 20:30:48,551 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:48,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1964506617, now seen corresponding path program 15 times [2021-10-21 20:30:48,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:48,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138602172] [2021-10-21 20:30:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:48,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:48,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:48,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138602172] [2021-10-21 20:30:48,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138602172] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:48,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:48,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:48,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864496039] [2021-10-21 20:30:48,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:48,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:48,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:48,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:48,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:48,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 136 transitions, 573 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:48,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:48,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:48,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:49,201 INFO L129 PetriNetUnfolder]: 192/756 cut-off events. [2021-10-21 20:30:49,201 INFO L130 PetriNetUnfolder]: For 1321/1337 co-relation queries the response was YES. [2021-10-21 20:30:49,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2087 conditions, 756 events. 192/756 cut-off events. For 1321/1337 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4303 event pairs, 28 based on Foata normal form. 6/760 useless extension candidates. Maximal degree in co-relation 2059. Up to 119 conditions per place. [2021-10-21 20:30:49,214 INFO L132 encePairwiseOnDemand]: 118/132 looper letters, 62 selfloop transitions, 45 changer transitions 23/207 dead transitions. [2021-10-21 20:30:49,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 207 transitions, 1298 flow [2021-10-21 20:30:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 20:30:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-21 20:30:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1837 transitions. [2021-10-21 20:30:49,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7324561403508771 [2021-10-21 20:30:49,219 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1837 transitions. [2021-10-21 20:30:49,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1837 transitions. [2021-10-21 20:30:49,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:49,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1837 transitions. [2021-10-21 20:30:49,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:49,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 132.0) internal successors, (2640), 20 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:49,232 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 132.0) internal successors, (2640), 20 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:49,232 INFO L186 Difference]: Start difference. First operand has 167 places, 136 transitions, 573 flow. Second operand 19 states and 1837 transitions. [2021-10-21 20:30:49,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 207 transitions, 1298 flow [2021-10-21 20:30:49,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 207 transitions, 1088 flow, removed 88 selfloop flow, removed 17 redundant places. [2021-10-21 20:30:49,246 INFO L242 Difference]: Finished difference. Result has 169 places, 150 transitions, 752 flow [2021-10-21 20:30:49,247 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=752, PETRI_PLACES=169, PETRI_TRANSITIONS=150} [2021-10-21 20:30:49,247 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 45 predicate places. [2021-10-21 20:30:49,247 INFO L470 AbstractCegarLoop]: Abstraction has has 169 places, 150 transitions, 752 flow [2021-10-21 20:30:49,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:49,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:49,248 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] [2021-10-21 20:30:49,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 20:30:49,249 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:49,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1201908207, now seen corresponding path program 16 times [2021-10-21 20:30:49,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:49,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974265458] [2021-10-21 20:30:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:49,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:49,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:49,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974265458] [2021-10-21 20:30:49,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974265458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:49,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:49,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:49,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254229734] [2021-10-21 20:30:49,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:49,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:49,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:49,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:49,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:49,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 150 transitions, 752 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:49,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:49,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:49,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:49,760 INFO L129 PetriNetUnfolder]: 166/627 cut-off events. [2021-10-21 20:30:49,760 INFO L130 PetriNetUnfolder]: For 1526/1552 co-relation queries the response was YES. [2021-10-21 20:30:49,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 627 events. 166/627 cut-off events. For 1526/1552 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3069 event pairs, 92 based on Foata normal form. 8/635 useless extension candidates. Maximal degree in co-relation 1895. Up to 294 conditions per place. [2021-10-21 20:30:49,771 INFO L132 encePairwiseOnDemand]: 120/132 looper letters, 60 selfloop transitions, 15 changer transitions 18/170 dead transitions. [2021-10-21 20:30:49,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 170 transitions, 1065 flow [2021-10-21 20:30:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:30:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:30:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1519 transitions. [2021-10-21 20:30:49,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7192234848484849 [2021-10-21 20:30:49,785 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1519 transitions. [2021-10-21 20:30:49,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1519 transitions. [2021-10-21 20:30:49,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:49,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1519 transitions. [2021-10-21 20:30:49,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.9375) internal successors, (1519), 16 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:49,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:49,800 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:49,802 INFO L186 Difference]: Start difference. First operand has 169 places, 150 transitions, 752 flow. Second operand 16 states and 1519 transitions. [2021-10-21 20:30:49,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 170 transitions, 1065 flow [2021-10-21 20:30:49,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 170 transitions, 966 flow, removed 22 selfloop flow, removed 12 redundant places. [2021-10-21 20:30:49,815 INFO L242 Difference]: Finished difference. Result has 174 places, 149 transitions, 726 flow [2021-10-21 20:30:49,816 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=726, PETRI_PLACES=174, PETRI_TRANSITIONS=149} [2021-10-21 20:30:49,816 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 50 predicate places. [2021-10-21 20:30:49,816 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 149 transitions, 726 flow [2021-10-21 20:30:49,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:49,817 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:49,817 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] [2021-10-21 20:30:49,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-21 20:30:49,818 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:49,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1159856433, now seen corresponding path program 17 times [2021-10-21 20:30:49,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:49,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719264586] [2021-10-21 20:30:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:49,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:49,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:49,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719264586] [2021-10-21 20:30:49,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719264586] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:49,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:49,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 20:30:49,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746682633] [2021-10-21 20:30:49,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 20:30:49,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:49,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 20:30:49,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:30:50,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:50,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 149 transitions, 726 flow. Second operand has 11 states, 11 states have (on average 93.9090909090909) internal successors, (1033), 11 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:50,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:50,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:50,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:50,347 INFO L129 PetriNetUnfolder]: 136/594 cut-off events. [2021-10-21 20:30:50,347 INFO L130 PetriNetUnfolder]: For 1062/1089 co-relation queries the response was YES. [2021-10-21 20:30:50,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 594 events. 136/594 cut-off events. For 1062/1089 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3023 event pairs, 39 based on Foata normal form. 7/601 useless extension candidates. Maximal degree in co-relation 1635. Up to 116 conditions per place. [2021-10-21 20:30:50,356 INFO L132 encePairwiseOnDemand]: 118/132 looper letters, 55 selfloop transitions, 28 changer transitions 18/178 dead transitions. [2021-10-21 20:30:50,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 178 transitions, 1061 flow [2021-10-21 20:30:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:30:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:30:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1543 transitions. [2021-10-21 20:30:50,359 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7305871212121212 [2021-10-21 20:30:50,360 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1543 transitions. [2021-10-21 20:30:50,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1543 transitions. [2021-10-21 20:30:50,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:50,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1543 transitions. [2021-10-21 20:30:50,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 96.4375) internal successors, (1543), 16 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:50,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:50,368 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:50,368 INFO L186 Difference]: Start difference. First operand has 174 places, 149 transitions, 726 flow. Second operand 16 states and 1543 transitions. [2021-10-21 20:30:50,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 178 transitions, 1061 flow [2021-10-21 20:30:50,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 178 transitions, 1003 flow, removed 14 selfloop flow, removed 11 redundant places. [2021-10-21 20:30:50,380 INFO L242 Difference]: Finished difference. Result has 177 places, 142 transitions, 696 flow [2021-10-21 20:30:50,381 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=696, PETRI_PLACES=177, PETRI_TRANSITIONS=142} [2021-10-21 20:30:50,381 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 53 predicate places. [2021-10-21 20:30:50,381 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 142 transitions, 696 flow [2021-10-21 20:30:50,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 93.9090909090909) internal successors, (1033), 11 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:50,382 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:50,382 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] [2021-10-21 20:30:50,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 20:30:50,382 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash 860920411, now seen corresponding path program 18 times [2021-10-21 20:30:50,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:50,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890218130] [2021-10-21 20:30:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:50,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:50,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:50,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890218130] [2021-10-21 20:30:50,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890218130] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:50,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:50,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:50,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686304737] [2021-10-21 20:30:50,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:50,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:50,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:50,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:50,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:50,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 142 transitions, 696 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:50,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:50,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:50,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:50,854 INFO L129 PetriNetUnfolder]: 113/485 cut-off events. [2021-10-21 20:30:50,854 INFO L130 PetriNetUnfolder]: For 1457/1502 co-relation queries the response was YES. [2021-10-21 20:30:50,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 485 events. 113/485 cut-off events. For 1457/1502 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2143 event pairs, 64 based on Foata normal form. 14/495 useless extension candidates. Maximal degree in co-relation 1491. Up to 178 conditions per place. [2021-10-21 20:30:50,862 INFO L132 encePairwiseOnDemand]: 120/132 looper letters, 46 selfloop transitions, 10 changer transitions 21/154 dead transitions. [2021-10-21 20:30:50,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 154 transitions, 916 flow [2021-10-21 20:30:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:30:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:30:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1516 transitions. [2021-10-21 20:30:50,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7178030303030303 [2021-10-21 20:30:50,865 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1516 transitions. [2021-10-21 20:30:50,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1516 transitions. [2021-10-21 20:30:50,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:50,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1516 transitions. [2021-10-21 20:30:50,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.75) internal successors, (1516), 16 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:50,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:50,874 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:50,874 INFO L186 Difference]: Start difference. First operand has 177 places, 142 transitions, 696 flow. Second operand 16 states and 1516 transitions. [2021-10-21 20:30:50,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 154 transitions, 916 flow [2021-10-21 20:30:50,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 154 transitions, 815 flow, removed 20 selfloop flow, removed 17 redundant places. [2021-10-21 20:30:50,887 INFO L242 Difference]: Finished difference. Result has 175 places, 132 transitions, 547 flow [2021-10-21 20:30:50,887 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=547, PETRI_PLACES=175, PETRI_TRANSITIONS=132} [2021-10-21 20:30:50,888 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 51 predicate places. [2021-10-21 20:30:50,888 INFO L470 AbstractCegarLoop]: Abstraction has has 175 places, 132 transitions, 547 flow [2021-10-21 20:30:50,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:50,888 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:50,889 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] [2021-10-21 20:30:50,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 20:30:50,889 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:50,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1322731893, now seen corresponding path program 19 times [2021-10-21 20:30:50,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:50,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264841174] [2021-10-21 20:30:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:50,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:51,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:51,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264841174] [2021-10-21 20:30:51,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264841174] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:51,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:51,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:51,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143042883] [2021-10-21 20:30:51,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:51,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:51,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:51,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:51,035 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:51,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 132 transitions, 547 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:51,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:51,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:51,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:51,367 INFO L129 PetriNetUnfolder]: 58/309 cut-off events. [2021-10-21 20:30:51,367 INFO L130 PetriNetUnfolder]: For 520/524 co-relation queries the response was YES. [2021-10-21 20:30:51,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 309 events. 58/309 cut-off events. For 520/524 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 983 event pairs, 29 based on Foata normal form. 8/317 useless extension candidates. Maximal degree in co-relation 832. Up to 96 conditions per place. [2021-10-21 20:30:51,372 INFO L132 encePairwiseOnDemand]: 120/132 looper letters, 34 selfloop transitions, 9 changer transitions 21/141 dead transitions. [2021-10-21 20:30:51,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 141 transitions, 725 flow [2021-10-21 20:30:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 20:30:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 20:30:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1514 transitions. [2021-10-21 20:30:51,375 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7168560606060606 [2021-10-21 20:30:51,376 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1514 transitions. [2021-10-21 20:30:51,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1514 transitions. [2021-10-21 20:30:51,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:51,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1514 transitions. [2021-10-21 20:30:51,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.625) internal successors, (1514), 16 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:51,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:51,384 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:51,384 INFO L186 Difference]: Start difference. First operand has 175 places, 132 transitions, 547 flow. Second operand 16 states and 1514 transitions. [2021-10-21 20:30:51,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 141 transitions, 725 flow [2021-10-21 20:30:51,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 141 transitions, 612 flow, removed 28 selfloop flow, removed 24 redundant places. [2021-10-21 20:30:51,392 INFO L242 Difference]: Finished difference. Result has 160 places, 120 transitions, 411 flow [2021-10-21 20:30:51,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=411, PETRI_PLACES=160, PETRI_TRANSITIONS=120} [2021-10-21 20:30:51,393 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, 36 predicate places. [2021-10-21 20:30:51,393 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 120 transitions, 411 flow [2021-10-21 20:30:51,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:51,394 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 20:30:51,394 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] [2021-10-21 20:30:51,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-21 20:30:51,395 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-21 20:30:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:51,395 INFO L82 PathProgramCache]: Analyzing trace with hash -536058539, now seen corresponding path program 20 times [2021-10-21 20:30:51,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:51,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395577238] [2021-10-21 20:30:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:51,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:51,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:51,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395577238] [2021-10-21 20:30:51,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395577238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:51,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:51,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:51,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992543613] [2021-10-21 20:30:51,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:51,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:51,557 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 132 [2021-10-21 20:30:51,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 120 transitions, 411 flow. Second operand has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:51,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 20:30:51,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 132 [2021-10-21 20:30:51,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 20:30:51,805 INFO L129 PetriNetUnfolder]: 20/137 cut-off events. [2021-10-21 20:30:51,805 INFO L130 PetriNetUnfolder]: For 137/137 co-relation queries the response was YES. [2021-10-21 20:30:51,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 137 events. 20/137 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 248 event pairs, 0 based on Foata normal form. 4/141 useless extension candidates. Maximal degree in co-relation 327. Up to 18 conditions per place. [2021-10-21 20:30:51,807 INFO L132 encePairwiseOnDemand]: 120/132 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2021-10-21 20:30:51,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 102 transitions, 461 flow [2021-10-21 20:30:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:30:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-21 20:30:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1409 transitions. [2021-10-21 20:30:51,810 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7116161616161616 [2021-10-21 20:30:51,810 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1409 transitions. [2021-10-21 20:30:51,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1409 transitions. [2021-10-21 20:30:51,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:30:51,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1409 transitions. [2021-10-21 20:30:51,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 93.93333333333334) internal successors, (1409), 15 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:51,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 132.0) internal successors, (2112), 16 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:51,818 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 132.0) internal successors, (2112), 16 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:51,818 INFO L186 Difference]: Start difference. First operand has 160 places, 120 transitions, 411 flow. Second operand 15 states and 1409 transitions. [2021-10-21 20:30:51,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 102 transitions, 461 flow [2021-10-21 20:30:51,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 102 transitions, 363 flow, removed 19 selfloop flow, removed 21 redundant places. [2021-10-21 20:30:51,822 INFO L242 Difference]: Finished difference. Result has 113 places, 0 transitions, 0 flow [2021-10-21 20:30:51,822 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=113, PETRI_TRANSITIONS=0} [2021-10-21 20:30:51,823 INFO L334 CegarLoopForPetriNet]: 124 programPoint places, -11 predicate places. [2021-10-21 20:30:51,823 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 0 transitions, 0 flow [2021-10-21 20:30:51,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 93.66666666666667) internal successors, (1124), 12 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) [2021-10-21 20:30:51,826 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:30:51,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 20:30:51,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 20:30:51,828 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 20:30:51,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-21 20:30:51,834 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 20:30:51,835 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:30:51,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:30:51 BasicIcfg [2021-10-21 20:30:51,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:30:51,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:30:51,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:30:51,847 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:30:51,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:37" (3/4) ... [2021-10-21 20:30:51,850 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:30:51,857 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-21 20:30:51,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-21 20:30:51,858 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-21 20:30:51,869 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-21 20:30:51,869 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:30:51,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:30:51,870 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:30:51,945 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:30:51,946 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:30:51,948 INFO L168 Benchmark]: Toolchain (without parser) took 15511.12 ms. Allocated memory was 125.8 MB in the beginning and 220.2 MB in the end (delta: 94.4 MB). Free memory was 91.5 MB in the beginning and 132.3 MB in the end (delta: -40.9 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:51,948 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:30:51,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.02 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 99.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:51,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.86 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 97.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:51,950 INFO L168 Benchmark]: Boogie Preprocessor took 43.69 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 96.4 MB in the end (delta: 983.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:30:51,950 INFO L168 Benchmark]: RCFGBuilder took 613.06 ms. Allocated memory is still 125.8 MB. Free memory was 96.4 MB in the beginning and 81.1 MB in the end (delta: 15.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:51,951 INFO L168 Benchmark]: TraceAbstraction took 14381.00 ms. Allocated memory was 125.8 MB in the beginning and 220.2 MB in the end (delta: 94.4 MB). Free memory was 80.6 MB in the beginning and 135.5 MB in the end (delta: -54.9 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:51,951 INFO L168 Benchmark]: Witness Printer took 99.83 ms. Allocated memory is still 220.2 MB. Free memory was 135.5 MB in the beginning and 132.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:51,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory is still 40.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.02 ms. Allocated memory is still 125.8 MB. Free memory was 91.5 MB in the beginning and 99.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.86 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 97.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.69 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 96.4 MB in the end (delta: 983.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 613.06 ms. Allocated memory is still 125.8 MB. Free memory was 96.4 MB in the beginning and 81.1 MB in the end (delta: 15.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14381.00 ms. Allocated memory was 125.8 MB in the beginning and 220.2 MB in the end (delta: 94.4 MB). Free memory was 80.6 MB in the beginning and 135.5 MB in the end (delta: -54.9 MB). Peak memory consumption was 41.5 MB. Max. memory is 16.1 GB. * Witness Printer took 99.83 ms. Allocated memory is still 220.2 MB. Free memory was 135.5 MB in the beginning and 132.3 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 104]: 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 7 procedures, 171 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 59.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14206.4ms, OverallIterations: 20, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 9480.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 111.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 566 SDtfs, 1451 SDslu, 2345 SDs, 0 SdLazy, 4535 SolverSat, 334 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2575.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 420 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 3272.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=9, InterpolantAutomatonStates: 324, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 94.1ms SsaConstructionTime, 933.8ms SatisfiabilityAnalysisTime, 3153.8ms InterpolantComputationTime, 2180 NumberOfCodeBlocks, 2180 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2160 ConstructedInterpolants, 0 QuantifiedInterpolants, 5306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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! [2021-10-21 20:30:52,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e0194e9-2a3b-4f53-b078-909acaba1557/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...