./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R --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 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:08:22,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:08:22,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:08:22,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:08:22,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:08:22,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:08:22,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:08:22,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:08:22,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:08:22,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:08:22,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:08:22,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:08:22,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:08:22,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:08:22,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:08:22,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:08:22,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:08:22,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:08:22,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:08:22,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:08:22,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:08:22,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:08:22,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:08:22,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:08:22,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:08:22,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:08:22,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:08:22,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:08:22,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:08:22,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:08:22,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:08:22,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:08:22,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:08:22,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:08:22,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:08:22,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:08:22,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:08:22,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:08:22,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:08:22,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:08:22,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:08:22,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:08:22,166 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:08:22,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:08:22,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:08:22,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:08:22,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:08:22,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:08:22,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:08:22,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:08:22,170 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:08:22,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:08:22,171 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:08:22,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:08:22,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:08:22,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:08:22,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:08:22,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:08:22,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:08:22,173 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:08:22,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:08:22,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:08:22,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:08:22,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:08:22,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:08:22,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:08:22,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:08:22,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:08:22,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:08:22,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:08:22,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:08:22,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:08:22,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:08:22,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:08:22,176 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:08:22,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:08:22,177 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b55bbc1c83a113dd61cfbd1c59324170026eea9fc3fed8c2e488e492b32e33 [2022-11-25 17:08:22,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:08:22,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:08:22,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:08:22,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:08:22,448 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:08:22,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-11-25 17:08:25,568 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:08:25,995 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:08:25,995 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i [2022-11-25 17:08:26,021 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/data/e30507ffc/22ac793be708466d9dbbbd1f8af85c62/FLAGd9d3f716f [2022-11-25 17:08:26,044 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/data/e30507ffc/22ac793be708466d9dbbbd1f8af85c62 [2022-11-25 17:08:26,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:08:26,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:08:26,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:08:26,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:08:26,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:08:26,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:08:26" (1/1) ... [2022-11-25 17:08:26,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e86452f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:26, skipping insertion in model container [2022-11-25 17:08:26,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:08:26" (1/1) ... [2022-11-25 17:08:26,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:08:26,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:08:26,932 WARN L237 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_0bdc0f65-bd4f-47eb-903f-37253a46046c/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-11-25 17:08:26,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:08:27,005 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:08:27,099 WARN L237 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_0bdc0f65-bd4f-47eb-903f-37253a46046c/sv-benchmarks/c/ldv-races/race-3_1-container_of-global.i[76084,76097] [2022-11-25 17:08:27,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:08:27,261 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:08:27,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27 WrapperNode [2022-11-25 17:08:27,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:08:27,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:08:27,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:08:27,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:08:27,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,358 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-11-25 17:08:27,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:08:27,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:08:27,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:08:27,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:08:27,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,431 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:08:27,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:08:27,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:08:27,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:08:27,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (1/1) ... [2022-11-25 17:08:27,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:08:27,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:08:27,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:08:27,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:08:27,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:08:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:08:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 17:08:27,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:08:27,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:08:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:08:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:08:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-25 17:08:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-25 17:08:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:08:27,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:08:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:08:27,552 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:08:28,003 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:08:28,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:08:28,461 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:08:28,469 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:08:28,470 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:08:28,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:08:28 BoogieIcfgContainer [2022-11-25 17:08:28,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:08:28,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:08:28,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:08:28,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:08:28,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:08:26" (1/3) ... [2022-11-25 17:08:28,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a29240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:08:28, skipping insertion in model container [2022-11-25 17:08:28,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:08:27" (2/3) ... [2022-11-25 17:08:28,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a29240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:08:28, skipping insertion in model container [2022-11-25 17:08:28,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:08:28" (3/3) ... [2022-11-25 17:08:28,481 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2022-11-25 17:08:28,489 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:08:28,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:08:28,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-25 17:08:28,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:08:28,563 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:08:28,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 194 transitions, 404 flow [2022-11-25 17:08:28,683 INFO L130 PetriNetUnfolder]: 10/239 cut-off events. [2022-11-25 17:08:28,691 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:08:28,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 10/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 390 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-25 17:08:28,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 194 transitions, 404 flow [2022-11-25 17:08:28,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 180 transitions, 372 flow [2022-11-25 17:08:28,714 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:08:28,729 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 180 transitions, 372 flow [2022-11-25 17:08:28,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 180 transitions, 372 flow [2022-11-25 17:08:28,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 180 transitions, 372 flow [2022-11-25 17:08:28,782 INFO L130 PetriNetUnfolder]: 7/216 cut-off events. [2022-11-25 17:08:28,782 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:08:28,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 216 events. 7/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 329 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 129. Up to 4 conditions per place. [2022-11-25 17:08:28,786 INFO L119 LiptonReduction]: Number of co-enabled transitions 2652 [2022-11-25 17:09:26,891 INFO L134 LiptonReduction]: Checked pairs total: 5922 [2022-11-25 17:09:26,892 INFO L136 LiptonReduction]: Total number of compositions: 190 [2022-11-25 17:09:26,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:09:26,934 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f948526, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:09:26,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-25 17:09:26,938 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:09:26,939 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:09:26,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:26,942 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:09:26,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash 662, now seen corresponding path program 1 times [2022-11-25 17:09:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:26,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474754073] [2022-11-25 17:09:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:26,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:27,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:27,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474754073] [2022-11-25 17:09:27,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474754073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:27,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:27,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:09:27,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036515873] [2022-11-25 17:09:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:27,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:09:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:09:27,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:09:27,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 384 [2022-11-25 17:09:27,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:27,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:27,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 384 [2022-11-25 17:09:27,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:27,582 INFO L130 PetriNetUnfolder]: 216/443 cut-off events. [2022-11-25 17:09:27,582 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 17:09:27,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 443 events. 216/443 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2126 event pairs, 215 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 774. Up to 389 conditions per place. [2022-11-25 17:09:27,595 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2022-11-25 17:09:27,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2022-11-25 17:09:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:09:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:09:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2022-11-25 17:09:27,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-11-25 17:09:27,623 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2022-11-25 17:09:27,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2022-11-25 17:09:27,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:27,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2022-11-25 17:09:27,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:27,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:27,648 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:27,650 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 384 transitions. [2022-11-25 17:09:27,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2022-11-25 17:09:27,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:09:27,661 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2022-11-25 17:09:27,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2022-11-25 17:09:27,666 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2022-11-25 17:09:27,666 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2022-11-25 17:09:27,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:27,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:27,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:09:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:09:27,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:27,667 INFO L85 PathProgramCache]: Analyzing trace with hash 20321620, now seen corresponding path program 1 times [2022-11-25 17:09:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:27,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197520834] [2022-11-25 17:09:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:28,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197520834] [2022-11-25 17:09:28,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197520834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:28,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:28,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:28,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235559661] [2022-11-25 17:09:28,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:28,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:28,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:28,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:28,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:28,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 384 [2022-11-25 17:09:28,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:28,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:28,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 384 [2022-11-25 17:09:28,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:28,610 INFO L130 PetriNetUnfolder]: 344/667 cut-off events. [2022-11-25 17:09:28,610 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:09:28,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 667 events. 344/667 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3435 event pairs, 183 based on Foata normal form. 0/610 useless extension candidates. Maximal degree in co-relation 1285. Up to 474 conditions per place. [2022-11-25 17:09:28,614 INFO L137 encePairwiseOnDemand]: 377/384 looper letters, 30 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2022-11-25 17:09:28,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 154 flow [2022-11-25 17:09:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:28,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2022-11-25 17:09:28,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4592013888888889 [2022-11-25 17:09:28,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2022-11-25 17:09:28,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2022-11-25 17:09:28,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:28,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2022-11-25 17:09:28,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:28,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:28,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:28,627 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 529 transitions. [2022-11-25 17:09:28,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 154 flow [2022-11-25 17:09:28,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:09:28,629 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2022-11-25 17:09:28,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2022-11-25 17:09:28,631 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-11-25 17:09:28,631 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2022-11-25 17:09:28,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:28,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:28,633 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:09:28,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:09:28,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 629969835, now seen corresponding path program 1 times [2022-11-25 17:09:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:28,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517603911] [2022-11-25 17:09:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:28,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:28,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517603911] [2022-11-25 17:09:28,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517603911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:28,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:28,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:09:28,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565817873] [2022-11-25 17:09:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:28,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:09:28,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:29,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:09:29,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:09:29,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 384 [2022-11-25 17:09:29,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:29,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 384 [2022-11-25 17:09:29,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:29,454 INFO L130 PetriNetUnfolder]: 451/834 cut-off events. [2022-11-25 17:09:29,454 INFO L131 PetriNetUnfolder]: For 238/247 co-relation queries the response was YES. [2022-11-25 17:09:29,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 834 events. 451/834 cut-off events. For 238/247 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4271 event pairs, 225 based on Foata normal form. 47/873 useless extension candidates. Maximal degree in co-relation 2030. Up to 599 conditions per place. [2022-11-25 17:09:29,460 INFO L137 encePairwiseOnDemand]: 375/384 looper letters, 33 selfloop transitions, 10 changer transitions 2/47 dead transitions. [2022-11-25 17:09:29,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 238 flow [2022-11-25 17:09:29,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:09:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:09:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 694 transitions. [2022-11-25 17:09:29,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4518229166666667 [2022-11-25 17:09:29,463 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 694 transitions. [2022-11-25 17:09:29,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 694 transitions. [2022-11-25 17:09:29,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:29,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 694 transitions. [2022-11-25 17:09:29,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 384.0) internal successors, (1920), 5 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 384.0) internal successors, (1920), 5 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,470 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 694 transitions. [2022-11-25 17:09:29,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 238 flow [2022-11-25 17:09:29,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:29,472 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 165 flow [2022-11-25 17:09:29,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2022-11-25 17:09:29,473 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-11-25 17:09:29,473 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 165 flow [2022-11-25 17:09:29,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:29,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:29,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:09:29,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1914786451, now seen corresponding path program 1 times [2022-11-25 17:09:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:29,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739365097] [2022-11-25 17:09:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:29,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:29,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:29,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739365097] [2022-11-25 17:09:29,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739365097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:29,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:29,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:09:29,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552266131] [2022-11-25 17:09:29,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:29,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:29,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:29,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 384 [2022-11-25 17:09:29,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:29,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 384 [2022-11-25 17:09:29,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:29,714 INFO L130 PetriNetUnfolder]: 107/214 cut-off events. [2022-11-25 17:09:29,714 INFO L131 PetriNetUnfolder]: For 171/187 co-relation queries the response was YES. [2022-11-25 17:09:29,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 214 events. 107/214 cut-off events. For 171/187 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 759 event pairs, 41 based on Foata normal form. 31/235 useless extension candidates. Maximal degree in co-relation 557. Up to 149 conditions per place. [2022-11-25 17:09:29,716 INFO L137 encePairwiseOnDemand]: 382/384 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-11-25 17:09:29,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 144 flow [2022-11-25 17:09:29,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:29,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-11-25 17:09:29,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2022-11-25 17:09:29,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-11-25 17:09:29,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-11-25 17:09:29,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:29,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-11-25 17:09:29,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,731 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 165 flow. Second operand 3 states and 546 transitions. [2022-11-25 17:09:29,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 144 flow [2022-11-25 17:09:29,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 129 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-25 17:09:29,735 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 59 flow [2022-11-25 17:09:29,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2022-11-25 17:09:29,737 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2022-11-25 17:09:29,737 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 59 flow [2022-11-25 17:09:29,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:29,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:29,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:29,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:09:29,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1073737129, now seen corresponding path program 1 times [2022-11-25 17:09:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:29,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668953953] [2022-11-25 17:09:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:29,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:30,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:30,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668953953] [2022-11-25 17:09:30,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668953953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:30,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:30,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:09:30,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869189845] [2022-11-25 17:09:30,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:30,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:30,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:30,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 384 [2022-11-25 17:09:30,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:30,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:30,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 384 [2022-11-25 17:09:30,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:30,710 INFO L130 PetriNetUnfolder]: 94/223 cut-off events. [2022-11-25 17:09:30,710 INFO L131 PetriNetUnfolder]: For 65/70 co-relation queries the response was YES. [2022-11-25 17:09:30,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 223 events. 94/223 cut-off events. For 65/70 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 946 event pairs, 46 based on Foata normal form. 11/228 useless extension candidates. Maximal degree in co-relation 510. Up to 103 conditions per place. [2022-11-25 17:09:30,712 INFO L137 encePairwiseOnDemand]: 380/384 looper letters, 25 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-11-25 17:09:30,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 142 flow [2022-11-25 17:09:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2022-11-25 17:09:30,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4678819444444444 [2022-11-25 17:09:30,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2022-11-25 17:09:30,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2022-11-25 17:09:30,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:30,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2022-11-25 17:09:30,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:30,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:30,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:30,720 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 59 flow. Second operand 3 states and 539 transitions. [2022-11-25 17:09:30,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 142 flow [2022-11-25 17:09:30,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:30,722 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 77 flow [2022-11-25 17:09:30,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-11-25 17:09:30,725 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2022-11-25 17:09:30,725 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 77 flow [2022-11-25 17:09:30,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:30,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:30,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:30,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:09:30,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:30,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash -723317027, now seen corresponding path program 2 times [2022-11-25 17:09:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:30,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223910819] [2022-11-25 17:09:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:33,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:33,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223910819] [2022-11-25 17:09:33,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223910819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:33,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:33,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:09:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63759717] [2022-11-25 17:09:33,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:33,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:09:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:33,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:09:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:09:35,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:09:35,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 77 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:35,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:35,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:09:35,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:37,049 INFO L130 PetriNetUnfolder]: 233/464 cut-off events. [2022-11-25 17:09:37,049 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-25 17:09:37,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 464 events. 233/464 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1920 event pairs, 30 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 1265. Up to 241 conditions per place. [2022-11-25 17:09:37,053 INFO L137 encePairwiseOnDemand]: 372/384 looper letters, 69 selfloop transitions, 21 changer transitions 0/90 dead transitions. [2022-11-25 17:09:37,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 90 transitions, 455 flow [2022-11-25 17:09:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:09:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:09:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1863 transitions. [2022-11-25 17:09:37,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.404296875 [2022-11-25 17:09:37,067 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1863 transitions. [2022-11-25 17:09:37,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1863 transitions. [2022-11-25 17:09:37,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:37,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1863 transitions. [2022-11-25 17:09:37,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.25) internal successors, (1863), 12 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:37,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 384.0) internal successors, (4992), 13 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:37,086 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 384.0) internal successors, (4992), 13 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:37,087 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 77 flow. Second operand 12 states and 1863 transitions. [2022-11-25 17:09:37,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 90 transitions, 455 flow [2022-11-25 17:09:37,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 90 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:37,090 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 240 flow [2022-11-25 17:09:37,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=240, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2022-11-25 17:09:37,090 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2022-11-25 17:09:37,091 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 240 flow [2022-11-25 17:09:37,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:37,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:37,092 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:37,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:09:37,092 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:37,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1241337733, now seen corresponding path program 3 times [2022-11-25 17:09:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:37,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512027106] [2022-11-25 17:09:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:39,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:39,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512027106] [2022-11-25 17:09:39,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512027106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:39,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:39,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:09:39,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277546459] [2022-11-25 17:09:39,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:39,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:09:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:39,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:09:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:09:41,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:09:41,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 240 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:41,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:41,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:09:41,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:42,682 INFO L130 PetriNetUnfolder]: 273/573 cut-off events. [2022-11-25 17:09:42,682 INFO L131 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2022-11-25 17:09:42,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 573 events. 273/573 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2605 event pairs, 105 based on Foata normal form. 1/573 useless extension candidates. Maximal degree in co-relation 1952. Up to 451 conditions per place. [2022-11-25 17:09:42,686 INFO L137 encePairwiseOnDemand]: 372/384 looper letters, 75 selfloop transitions, 27 changer transitions 0/102 dead transitions. [2022-11-25 17:09:42,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 722 flow [2022-11-25 17:09:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:09:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:09:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1699 transitions. [2022-11-25 17:09:42,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4022253787878788 [2022-11-25 17:09:42,694 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1699 transitions. [2022-11-25 17:09:42,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1699 transitions. [2022-11-25 17:09:42,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:42,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1699 transitions. [2022-11-25 17:09:42,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 154.45454545454547) internal successors, (1699), 11 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:42,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:42,709 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:42,709 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 240 flow. Second operand 11 states and 1699 transitions. [2022-11-25 17:09:42,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 722 flow [2022-11-25 17:09:42,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 102 transitions, 694 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-11-25 17:09:42,715 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 503 flow [2022-11-25 17:09:42,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2022-11-25 17:09:42,716 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2022-11-25 17:09:42,717 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 503 flow [2022-11-25 17:09:42,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:42,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:42,718 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:42,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:09:42,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:42,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1303787593, now seen corresponding path program 4 times [2022-11-25 17:09:42,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:42,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392601901] [2022-11-25 17:09:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:42,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:44,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:44,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392601901] [2022-11-25 17:09:44,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392601901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:44,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:44,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:09:44,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269919424] [2022-11-25 17:09:44,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:44,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:09:44,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:09:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:09:47,003 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:09:47,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:47,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:47,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:09:47,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:48,372 INFO L130 PetriNetUnfolder]: 331/721 cut-off events. [2022-11-25 17:09:48,372 INFO L131 PetriNetUnfolder]: For 1469/1469 co-relation queries the response was YES. [2022-11-25 17:09:48,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 721 events. 331/721 cut-off events. For 1469/1469 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3708 event pairs, 75 based on Foata normal form. 1/721 useless extension candidates. Maximal degree in co-relation 2782. Up to 394 conditions per place. [2022-11-25 17:09:48,379 INFO L137 encePairwiseOnDemand]: 371/384 looper letters, 104 selfloop transitions, 41 changer transitions 0/145 dead transitions. [2022-11-25 17:09:48,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 145 transitions, 1177 flow [2022-11-25 17:09:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:09:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:09:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1715 transitions. [2022-11-25 17:09:48,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40601325757575757 [2022-11-25 17:09:48,386 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1715 transitions. [2022-11-25 17:09:48,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1715 transitions. [2022-11-25 17:09:48,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:48,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1715 transitions. [2022-11-25 17:09:48,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 155.9090909090909) internal successors, (1715), 11 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:48,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:48,401 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:48,401 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 503 flow. Second operand 11 states and 1715 transitions. [2022-11-25 17:09:48,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 145 transitions, 1177 flow [2022-11-25 17:09:48,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 145 transitions, 1159 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-25 17:09:48,414 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 778 flow [2022-11-25 17:09:48,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=778, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2022-11-25 17:09:48,417 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2022-11-25 17:09:48,417 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 778 flow [2022-11-25 17:09:48,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:48,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:48,418 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:48,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:09:48,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:48,420 INFO L85 PathProgramCache]: Analyzing trace with hash -138878879, now seen corresponding path program 5 times [2022-11-25 17:09:48,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:48,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727208198] [2022-11-25 17:09:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:48,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:50,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:50,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727208198] [2022-11-25 17:09:50,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727208198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:50,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:50,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:09:50,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484301501] [2022-11-25 17:09:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:50,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:09:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:50,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:09:50,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:09:52,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:09:52,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 778 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:52,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:52,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:09:52,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:53,750 INFO L130 PetriNetUnfolder]: 369/824 cut-off events. [2022-11-25 17:09:53,750 INFO L131 PetriNetUnfolder]: For 2713/2713 co-relation queries the response was YES. [2022-11-25 17:09:53,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3597 conditions, 824 events. 369/824 cut-off events. For 2713/2713 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4532 event pairs, 160 based on Foata normal form. 1/824 useless extension candidates. Maximal degree in co-relation 3569. Up to 674 conditions per place. [2022-11-25 17:09:53,758 INFO L137 encePairwiseOnDemand]: 373/384 looper letters, 111 selfloop transitions, 35 changer transitions 0/146 dead transitions. [2022-11-25 17:09:53,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 146 transitions, 1436 flow [2022-11-25 17:09:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:09:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:09:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1703 transitions. [2022-11-25 17:09:53,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4031723484848485 [2022-11-25 17:09:53,766 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1703 transitions. [2022-11-25 17:09:53,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1703 transitions. [2022-11-25 17:09:53,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:53,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1703 transitions. [2022-11-25 17:09:53,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 154.8181818181818) internal successors, (1703), 11 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:53,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:53,780 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:53,780 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 778 flow. Second operand 11 states and 1703 transitions. [2022-11-25 17:09:53,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 146 transitions, 1436 flow [2022-11-25 17:09:53,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 146 transitions, 1361 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-11-25 17:09:53,801 INFO L231 Difference]: Finished difference. Result has 95 places, 114 transitions, 1063 flow [2022-11-25 17:09:53,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1063, PETRI_PLACES=95, PETRI_TRANSITIONS=114} [2022-11-25 17:09:53,803 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2022-11-25 17:09:53,804 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 114 transitions, 1063 flow [2022-11-25 17:09:53,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:53,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:53,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:53,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:09:53,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:53,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1743433443, now seen corresponding path program 6 times [2022-11-25 17:09:53,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:53,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808048471] [2022-11-25 17:09:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:53,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:55,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:55,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808048471] [2022-11-25 17:09:55,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808048471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:55,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:55,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:09:55,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522581274] [2022-11-25 17:09:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:55,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:09:55,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:55,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:09:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:09:57,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:09:57,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 114 transitions, 1063 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:57,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:57,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:09:57,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:58,989 INFO L130 PetriNetUnfolder]: 379/858 cut-off events. [2022-11-25 17:09:58,989 INFO L131 PetriNetUnfolder]: For 3359/3359 co-relation queries the response was YES. [2022-11-25 17:09:58,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 858 events. 379/858 cut-off events. For 3359/3359 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4844 event pairs, 94 based on Foata normal form. 1/858 useless extension candidates. Maximal degree in co-relation 3904. Up to 515 conditions per place. [2022-11-25 17:09:58,999 INFO L137 encePairwiseOnDemand]: 371/384 looper letters, 114 selfloop transitions, 53 changer transitions 0/167 dead transitions. [2022-11-25 17:09:58,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 167 transitions, 1717 flow [2022-11-25 17:09:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:09:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:09:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1711 transitions. [2022-11-25 17:09:59,006 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4050662878787879 [2022-11-25 17:09:59,006 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1711 transitions. [2022-11-25 17:09:59,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1711 transitions. [2022-11-25 17:09:59,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:59,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1711 transitions. [2022-11-25 17:09:59,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 155.54545454545453) internal successors, (1711), 11 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,039 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,039 INFO L175 Difference]: Start difference. First operand has 95 places, 114 transitions, 1063 flow. Second operand 11 states and 1711 transitions. [2022-11-25 17:09:59,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 167 transitions, 1717 flow [2022-11-25 17:09:59,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 167 transitions, 1644 flow, removed 34 selfloop flow, removed 1 redundant places. [2022-11-25 17:09:59,062 INFO L231 Difference]: Finished difference. Result has 109 places, 126 transitions, 1275 flow [2022-11-25 17:09:59,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1275, PETRI_PLACES=109, PETRI_TRANSITIONS=126} [2022-11-25 17:09:59,065 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2022-11-25 17:09:59,065 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 126 transitions, 1275 flow [2022-11-25 17:09:59,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:59,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:59,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:09:59,067 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:59,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1216393561, now seen corresponding path program 1 times [2022-11-25 17:09:59,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:59,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422863444] [2022-11-25 17:09:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:59,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:09:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:09:59,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:09:59,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422863444] [2022-11-25 17:09:59,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422863444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:09:59,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:09:59,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:09:59,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42968260] [2022-11-25 17:09:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:09:59,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:09:59,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:09:59,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:09:59,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:09:59,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 384 [2022-11-25 17:09:59,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 1275 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:09:59,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 384 [2022-11-25 17:09:59,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:09:59,834 INFO L130 PetriNetUnfolder]: 115/366 cut-off events. [2022-11-25 17:09:59,834 INFO L131 PetriNetUnfolder]: For 1796/1806 co-relation queries the response was YES. [2022-11-25 17:09:59,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 366 events. 115/366 cut-off events. For 1796/1806 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1978 event pairs, 34 based on Foata normal form. 9/366 useless extension candidates. Maximal degree in co-relation 1699. Up to 186 conditions per place. [2022-11-25 17:09:59,839 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 79 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2022-11-25 17:09:59,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 1189 flow [2022-11-25 17:09:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:09:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:09:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2022-11-25 17:09:59,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644097222222222 [2022-11-25 17:09:59,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2022-11-25 17:09:59,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2022-11-25 17:09:59,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:09:59,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2022-11-25 17:09:59,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,846 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 1275 flow. Second operand 3 states and 535 transitions. [2022-11-25 17:09:59,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 1189 flow [2022-11-25 17:09:59,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 1092 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-11-25 17:09:59,860 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 909 flow [2022-11-25 17:09:59,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=909, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2022-11-25 17:09:59,861 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2022-11-25 17:09:59,861 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 909 flow [2022-11-25 17:09:59,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:09:59,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:09:59,862 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:09:59,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:09:59,863 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:09:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:09:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2125086277, now seen corresponding path program 2 times [2022-11-25 17:09:59,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:09:59,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864285701] [2022-11-25 17:09:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:09:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:09:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:01,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:01,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864285701] [2022-11-25 17:10:01,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864285701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:01,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:01,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:10:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178438263] [2022-11-25 17:10:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:01,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:10:01,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:01,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:10:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:10:02,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 384 [2022-11-25 17:10:02,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 909 flow. Second operand has 11 states, 11 states have (on average 154.72727272727272) internal successors, (1702), 11 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:02,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:02,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 384 [2022-11-25 17:10:02,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:03,192 INFO L130 PetriNetUnfolder]: 209/618 cut-off events. [2022-11-25 17:10:03,193 INFO L131 PetriNetUnfolder]: For 3092/3096 co-relation queries the response was YES. [2022-11-25 17:10:03,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 618 events. 209/618 cut-off events. For 3092/3096 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3857 event pairs, 77 based on Foata normal form. 6/611 useless extension candidates. Maximal degree in co-relation 2749. Up to 316 conditions per place. [2022-11-25 17:10:03,199 INFO L137 encePairwiseOnDemand]: 374/384 looper letters, 99 selfloop transitions, 42 changer transitions 15/170 dead transitions. [2022-11-25 17:10:03,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 170 transitions, 1881 flow [2022-11-25 17:10:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:10:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:10:03,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1130 transitions. [2022-11-25 17:10:03,204 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42038690476190477 [2022-11-25 17:10:03,204 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1130 transitions. [2022-11-25 17:10:03,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1130 transitions. [2022-11-25 17:10:03,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:03,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1130 transitions. [2022-11-25 17:10:03,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.42857142857142) internal successors, (1130), 7 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:03,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:03,214 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:03,214 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 909 flow. Second operand 7 states and 1130 transitions. [2022-11-25 17:10:03,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 170 transitions, 1881 flow [2022-11-25 17:10:03,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 170 transitions, 1839 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:10:03,235 INFO L231 Difference]: Finished difference. Result has 106 places, 118 transitions, 1266 flow [2022-11-25 17:10:03,236 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1266, PETRI_PLACES=106, PETRI_TRANSITIONS=118} [2022-11-25 17:10:03,237 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 70 predicate places. [2022-11-25 17:10:03,237 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 118 transitions, 1266 flow [2022-11-25 17:10:03,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 154.72727272727272) internal successors, (1702), 11 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:03,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:03,238 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:03,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:10:03,239 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:03,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:03,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1637172327, now seen corresponding path program 7 times [2022-11-25 17:10:03,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565077691] [2022-11-25 17:10:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:03,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:05,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:05,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565077691] [2022-11-25 17:10:05,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565077691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:05,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:05,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:10:05,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726687777] [2022-11-25 17:10:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:05,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:10:05,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:05,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:10:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:10:07,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:07,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 118 transitions, 1266 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:07,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:07,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:07,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:08,358 INFO L130 PetriNetUnfolder]: 214/598 cut-off events. [2022-11-25 17:10:08,359 INFO L131 PetriNetUnfolder]: For 3080/3080 co-relation queries the response was YES. [2022-11-25 17:10:08,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 598 events. 214/598 cut-off events. For 3080/3080 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3512 event pairs, 55 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 2798. Up to 367 conditions per place. [2022-11-25 17:10:08,366 INFO L137 encePairwiseOnDemand]: 371/384 looper letters, 99 selfloop transitions, 56 changer transitions 1/156 dead transitions. [2022-11-25 17:10:08,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 156 transitions, 1814 flow [2022-11-25 17:10:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:10:08,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:10:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1699 transitions. [2022-11-25 17:10:08,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4022253787878788 [2022-11-25 17:10:08,372 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1699 transitions. [2022-11-25 17:10:08,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1699 transitions. [2022-11-25 17:10:08,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:08,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1699 transitions. [2022-11-25 17:10:08,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 154.45454545454547) internal successors, (1699), 11 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:08,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:08,385 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:08,386 INFO L175 Difference]: Start difference. First operand has 106 places, 118 transitions, 1266 flow. Second operand 11 states and 1699 transitions. [2022-11-25 17:10:08,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 156 transitions, 1814 flow [2022-11-25 17:10:08,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 156 transitions, 1752 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-11-25 17:10:08,409 INFO L231 Difference]: Finished difference. Result has 118 places, 126 transitions, 1483 flow [2022-11-25 17:10:08,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1483, PETRI_PLACES=118, PETRI_TRANSITIONS=126} [2022-11-25 17:10:08,410 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 82 predicate places. [2022-11-25 17:10:08,410 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 126 transitions, 1483 flow [2022-11-25 17:10:08,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:08,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:08,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:08,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:10:08,412 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1681102993, now seen corresponding path program 3 times [2022-11-25 17:10:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:08,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507915165] [2022-11-25 17:10:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:08,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507915165] [2022-11-25 17:10:09,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507915165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:09,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:09,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:10:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225318641] [2022-11-25 17:10:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:09,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:10:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:10:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:10:10,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 384 [2022-11-25 17:10:10,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 154.72727272727272) internal successors, (1702), 11 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:10,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:10,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 384 [2022-11-25 17:10:10,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:11,793 INFO L130 PetriNetUnfolder]: 211/678 cut-off events. [2022-11-25 17:10:11,793 INFO L131 PetriNetUnfolder]: For 4352/4360 co-relation queries the response was YES. [2022-11-25 17:10:11,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 678 events. 211/678 cut-off events. For 4352/4360 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4573 event pairs, 42 based on Foata normal form. 6/673 useless extension candidates. Maximal degree in co-relation 3250. Up to 187 conditions per place. [2022-11-25 17:10:11,800 INFO L137 encePairwiseOnDemand]: 374/384 looper letters, 99 selfloop transitions, 69 changer transitions 21/204 dead transitions. [2022-11-25 17:10:11,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 204 transitions, 2527 flow [2022-11-25 17:10:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:10:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:10:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1919 transitions. [2022-11-25 17:10:11,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4164496527777778 [2022-11-25 17:10:11,807 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1919 transitions. [2022-11-25 17:10:11,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1919 transitions. [2022-11-25 17:10:11,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:11,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1919 transitions. [2022-11-25 17:10:11,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 159.91666666666666) internal successors, (1919), 12 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:11,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 384.0) internal successors, (4992), 13 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:11,822 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 384.0) internal successors, (4992), 13 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:11,822 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 1483 flow. Second operand 12 states and 1919 transitions. [2022-11-25 17:10:11,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 204 transitions, 2527 flow [2022-11-25 17:10:11,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 204 transitions, 2471 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 17:10:11,858 INFO L231 Difference]: Finished difference. Result has 129 places, 134 transitions, 1746 flow [2022-11-25 17:10:11,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1746, PETRI_PLACES=129, PETRI_TRANSITIONS=134} [2022-11-25 17:10:11,859 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2022-11-25 17:10:11,860 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 134 transitions, 1746 flow [2022-11-25 17:10:11,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 154.72727272727272) internal successors, (1702), 11 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:11,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:11,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:11,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:10:11,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:11,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash 790164693, now seen corresponding path program 8 times [2022-11-25 17:10:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:11,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777673800] [2022-11-25 17:10:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:13,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:13,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777673800] [2022-11-25 17:10:13,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777673800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:13,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:13,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:10:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744099689] [2022-11-25 17:10:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:10:13,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:10:13,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:10:15,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:15,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 134 transitions, 1746 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:15,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:15,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:15,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:16,701 INFO L130 PetriNetUnfolder]: 217/661 cut-off events. [2022-11-25 17:10:16,701 INFO L131 PetriNetUnfolder]: For 4889/4889 co-relation queries the response was YES. [2022-11-25 17:10:16,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3417 conditions, 661 events. 217/661 cut-off events. For 4889/4889 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4244 event pairs, 105 based on Foata normal form. 4/664 useless extension candidates. Maximal degree in co-relation 3367. Up to 499 conditions per place. [2022-11-25 17:10:16,707 INFO L137 encePairwiseOnDemand]: 373/384 looper letters, 138 selfloop transitions, 23 changer transitions 9/170 dead transitions. [2022-11-25 17:10:16,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 170 transitions, 2411 flow [2022-11-25 17:10:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:10:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:10:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1542 transitions. [2022-11-25 17:10:16,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4015625 [2022-11-25 17:10:16,713 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1542 transitions. [2022-11-25 17:10:16,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1542 transitions. [2022-11-25 17:10:16,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:16,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1542 transitions. [2022-11-25 17:10:16,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 154.2) internal successors, (1542), 10 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) [2022-11-25 17:10:16,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:16,725 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:16,725 INFO L175 Difference]: Start difference. First operand has 129 places, 134 transitions, 1746 flow. Second operand 10 states and 1542 transitions. [2022-11-25 17:10:16,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 170 transitions, 2411 flow [2022-11-25 17:10:16,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 170 transitions, 2287 flow, removed 49 selfloop flow, removed 4 redundant places. [2022-11-25 17:10:16,765 INFO L231 Difference]: Finished difference. Result has 136 places, 135 transitions, 1748 flow [2022-11-25 17:10:16,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1748, PETRI_PLACES=136, PETRI_TRANSITIONS=135} [2022-11-25 17:10:16,766 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 100 predicate places. [2022-11-25 17:10:16,766 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 1748 flow [2022-11-25 17:10:16,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:16,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:16,767 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:16,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:10:16,768 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:16,768 INFO L85 PathProgramCache]: Analyzing trace with hash 824520979, now seen corresponding path program 4 times [2022-11-25 17:10:16,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:16,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794861088] [2022-11-25 17:10:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:17,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:17,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794861088] [2022-11-25 17:10:17,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794861088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:17,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:17,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:10:17,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500354203] [2022-11-25 17:10:17,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:17,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:10:17,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:17,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:10:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:10:18,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 384 [2022-11-25 17:10:18,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 1748 flow. Second operand has 7 states, 7 states have (on average 160.71428571428572) internal successors, (1125), 7 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:18,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:18,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 384 [2022-11-25 17:10:18,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:18,625 INFO L130 PetriNetUnfolder]: 167/598 cut-off events. [2022-11-25 17:10:18,626 INFO L131 PetriNetUnfolder]: For 4754/4757 co-relation queries the response was YES. [2022-11-25 17:10:18,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 598 events. 167/598 cut-off events. For 4754/4757 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4120 event pairs, 60 based on Foata normal form. 14/609 useless extension candidates. Maximal degree in co-relation 2957. Up to 217 conditions per place. [2022-11-25 17:10:18,631 INFO L137 encePairwiseOnDemand]: 377/384 looper letters, 70 selfloop transitions, 28 changer transitions 55/159 dead transitions. [2022-11-25 17:10:18,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 159 transitions, 2212 flow [2022-11-25 17:10:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:10:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:10:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 995 transitions. [2022-11-25 17:10:18,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4318576388888889 [2022-11-25 17:10:18,641 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 995 transitions. [2022-11-25 17:10:18,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 995 transitions. [2022-11-25 17:10:18,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:18,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 995 transitions. [2022-11-25 17:10:18,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.83333333333334) internal successors, (995), 6 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:18,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:18,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:18,654 INFO L175 Difference]: Start difference. First operand has 136 places, 135 transitions, 1748 flow. Second operand 6 states and 995 transitions. [2022-11-25 17:10:18,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 159 transitions, 2212 flow [2022-11-25 17:10:18,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 159 transitions, 2127 flow, removed 29 selfloop flow, removed 5 redundant places. [2022-11-25 17:10:18,692 INFO L231 Difference]: Finished difference. Result has 137 places, 79 transitions, 965 flow [2022-11-25 17:10:18,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=965, PETRI_PLACES=137, PETRI_TRANSITIONS=79} [2022-11-25 17:10:18,693 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 101 predicate places. [2022-11-25 17:10:18,693 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 79 transitions, 965 flow [2022-11-25 17:10:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.71428571428572) internal successors, (1125), 7 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:18,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:18,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:18,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:10:18,694 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:18,695 INFO L85 PathProgramCache]: Analyzing trace with hash 172839789, now seen corresponding path program 5 times [2022-11-25 17:10:18,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:18,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214801734] [2022-11-25 17:10:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:18,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:20,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:20,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214801734] [2022-11-25 17:10:20,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214801734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:20,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:20,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:10:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577963157] [2022-11-25 17:10:20,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:20,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:10:20,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:20,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:10:20,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:10:21,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 384 [2022-11-25 17:10:21,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 79 transitions, 965 flow. Second operand has 12 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:21,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:21,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 384 [2022-11-25 17:10:21,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:22,412 INFO L130 PetriNetUnfolder]: 89/326 cut-off events. [2022-11-25 17:10:22,412 INFO L131 PetriNetUnfolder]: For 2439/2446 co-relation queries the response was YES. [2022-11-25 17:10:22,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1672 conditions, 326 events. 89/326 cut-off events. For 2439/2446 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1751 event pairs, 29 based on Foata normal form. 3/326 useless extension candidates. Maximal degree in co-relation 1617. Up to 169 conditions per place. [2022-11-25 17:10:22,415 INFO L137 encePairwiseOnDemand]: 375/384 looper letters, 53 selfloop transitions, 31 changer transitions 16/104 dead transitions. [2022-11-25 17:10:22,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 104 transitions, 1262 flow [2022-11-25 17:10:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:10:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:10:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1886 transitions. [2022-11-25 17:10:22,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4092881944444444 [2022-11-25 17:10:22,420 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1886 transitions. [2022-11-25 17:10:22,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1886 transitions. [2022-11-25 17:10:22,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:22,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1886 transitions. [2022-11-25 17:10:22,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 157.16666666666666) internal successors, (1886), 12 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:22,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 384.0) internal successors, (4992), 13 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:22,432 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 384.0) internal successors, (4992), 13 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:22,432 INFO L175 Difference]: Start difference. First operand has 137 places, 79 transitions, 965 flow. Second operand 12 states and 1886 transitions. [2022-11-25 17:10:22,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 104 transitions, 1262 flow [2022-11-25 17:10:22,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 104 transitions, 1029 flow, removed 92 selfloop flow, removed 28 redundant places. [2022-11-25 17:10:22,449 INFO L231 Difference]: Finished difference. Result has 102 places, 68 transitions, 698 flow [2022-11-25 17:10:22,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=698, PETRI_PLACES=102, PETRI_TRANSITIONS=68} [2022-11-25 17:10:22,450 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2022-11-25 17:10:22,451 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 68 transitions, 698 flow [2022-11-25 17:10:22,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.58333333333334) internal successors, (1843), 12 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:22,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:22,452 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:10:22,452 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1987553121, now seen corresponding path program 9 times [2022-11-25 17:10:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:22,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855341855] [2022-11-25 17:10:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:22,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:24,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:24,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855341855] [2022-11-25 17:10:24,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855341855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:24,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:24,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:10:24,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215623112] [2022-11-25 17:10:24,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:24,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:10:24,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:24,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:10:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:10:26,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:26,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 68 transitions, 698 flow. Second operand has 12 states, 12 states have (on average 149.75) internal successors, (1797), 12 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:26,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:26,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:26,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:27,285 INFO L130 PetriNetUnfolder]: 84/290 cut-off events. [2022-11-25 17:10:27,286 INFO L131 PetriNetUnfolder]: For 1208/1208 co-relation queries the response was YES. [2022-11-25 17:10:27,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 290 events. 84/290 cut-off events. For 1208/1208 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1413 event pairs, 24 based on Foata normal form. 3/293 useless extension candidates. Maximal degree in co-relation 1264. Up to 135 conditions per place. [2022-11-25 17:10:27,288 INFO L137 encePairwiseOnDemand]: 374/384 looper letters, 58 selfloop transitions, 12 changer transitions 30/100 dead transitions. [2022-11-25 17:10:27,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 100 transitions, 1050 flow [2022-11-25 17:10:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:10:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:10:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1545 transitions. [2022-11-25 17:10:27,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2022-11-25 17:10:27,293 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1545 transitions. [2022-11-25 17:10:27,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1545 transitions. [2022-11-25 17:10:27,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:27,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1545 transitions. [2022-11-25 17:10:27,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 154.5) internal successors, (1545), 10 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:27,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:27,302 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:27,302 INFO L175 Difference]: Start difference. First operand has 102 places, 68 transitions, 698 flow. Second operand 10 states and 1545 transitions. [2022-11-25 17:10:27,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 100 transitions, 1050 flow [2022-11-25 17:10:27,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 937 flow, removed 42 selfloop flow, removed 12 redundant places. [2022-11-25 17:10:27,312 INFO L231 Difference]: Finished difference. Result has 96 places, 61 transitions, 567 flow [2022-11-25 17:10:27,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=567, PETRI_PLACES=96, PETRI_TRANSITIONS=61} [2022-11-25 17:10:27,313 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2022-11-25 17:10:27,313 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 61 transitions, 567 flow [2022-11-25 17:10:27,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 149.75) internal successors, (1797), 12 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:27,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:27,314 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:27,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:10:27,315 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:27,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2079922231, now seen corresponding path program 10 times [2022-11-25 17:10:27,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:27,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105391040] [2022-11-25 17:10:27,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:27,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:28,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:28,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105391040] [2022-11-25 17:10:28,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105391040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:28,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:28,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:10:28,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656066356] [2022-11-25 17:10:28,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:28,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:10:28,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:28,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:10:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:10:31,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:31,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 61 transitions, 567 flow. Second operand has 12 states, 12 states have (on average 149.75) internal successors, (1797), 12 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:31,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:31,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:31,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:32,077 INFO L130 PetriNetUnfolder]: 67/243 cut-off events. [2022-11-25 17:10:32,078 INFO L131 PetriNetUnfolder]: For 830/830 co-relation queries the response was YES. [2022-11-25 17:10:32,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 243 events. 67/243 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1097 event pairs, 21 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 1031. Up to 143 conditions per place. [2022-11-25 17:10:32,079 INFO L137 encePairwiseOnDemand]: 373/384 looper letters, 53 selfloop transitions, 16 changer transitions 17/86 dead transitions. [2022-11-25 17:10:32,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 86 transitions, 846 flow [2022-11-25 17:10:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:10:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:10:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1690 transitions. [2022-11-25 17:10:32,085 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40009469696969696 [2022-11-25 17:10:32,085 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1690 transitions. [2022-11-25 17:10:32,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1690 transitions. [2022-11-25 17:10:32,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:32,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1690 transitions. [2022-11-25 17:10:32,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 153.63636363636363) internal successors, (1690), 11 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:32,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:32,095 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 384.0) internal successors, (4608), 12 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:32,095 INFO L175 Difference]: Start difference. First operand has 96 places, 61 transitions, 567 flow. Second operand 11 states and 1690 transitions. [2022-11-25 17:10:32,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 86 transitions, 846 flow [2022-11-25 17:10:32,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 86 transitions, 798 flow, removed 12 selfloop flow, removed 9 redundant places. [2022-11-25 17:10:32,103 INFO L231 Difference]: Finished difference. Result has 95 places, 61 transitions, 567 flow [2022-11-25 17:10:32,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=567, PETRI_PLACES=95, PETRI_TRANSITIONS=61} [2022-11-25 17:10:32,104 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2022-11-25 17:10:32,104 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 61 transitions, 567 flow [2022-11-25 17:10:32,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 149.75) internal successors, (1797), 12 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:32,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:32,106 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:32,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:10:32,106 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -502356043, now seen corresponding path program 11 times [2022-11-25 17:10:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:32,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37092278] [2022-11-25 17:10:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:32,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:33,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37092278] [2022-11-25 17:10:33,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37092278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:33,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:33,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:10:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700806066] [2022-11-25 17:10:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:33,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:10:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:33,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:10:33,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:10:35,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:35,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 61 transitions, 567 flow. Second operand has 12 states, 12 states have (on average 149.75) internal successors, (1797), 12 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:35,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:35,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:35,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:36,867 INFO L130 PetriNetUnfolder]: 57/221 cut-off events. [2022-11-25 17:10:36,868 INFO L131 PetriNetUnfolder]: For 726/726 co-relation queries the response was YES. [2022-11-25 17:10:36,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 221 events. 57/221 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 954 event pairs, 15 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 923. Up to 87 conditions per place. [2022-11-25 17:10:36,869 INFO L137 encePairwiseOnDemand]: 374/384 looper letters, 35 selfloop transitions, 4 changer transitions 41/80 dead transitions. [2022-11-25 17:10:36,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 80 transitions, 768 flow [2022-11-25 17:10:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:10:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:10:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1537 transitions. [2022-11-25 17:10:36,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4002604166666667 [2022-11-25 17:10:36,885 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1537 transitions. [2022-11-25 17:10:36,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1537 transitions. [2022-11-25 17:10:36,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:36,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1537 transitions. [2022-11-25 17:10:36,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 153.7) internal successors, (1537), 10 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:36,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:36,891 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:36,891 INFO L175 Difference]: Start difference. First operand has 95 places, 61 transitions, 567 flow. Second operand 10 states and 1537 transitions. [2022-11-25 17:10:36,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 80 transitions, 768 flow [2022-11-25 17:10:36,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 80 transitions, 732 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-25 17:10:36,899 INFO L231 Difference]: Finished difference. Result has 95 places, 38 transitions, 328 flow [2022-11-25 17:10:36,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=328, PETRI_PLACES=95, PETRI_TRANSITIONS=38} [2022-11-25 17:10:36,900 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2022-11-25 17:10:36,900 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 38 transitions, 328 flow [2022-11-25 17:10:36,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 149.75) internal successors, (1797), 12 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:36,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:36,901 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:36,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 17:10:36,901 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:36,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:36,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1385905407, now seen corresponding path program 12 times [2022-11-25 17:10:36,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:36,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992511263] [2022-11-25 17:10:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:36,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:38,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:38,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992511263] [2022-11-25 17:10:38,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992511263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:38,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:38,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:10:38,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498253782] [2022-11-25 17:10:38,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:38,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:10:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:38,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:10:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:10:40,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:40,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 38 transitions, 328 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:40,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:40,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:40,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:41,418 INFO L130 PetriNetUnfolder]: 16/108 cut-off events. [2022-11-25 17:10:41,418 INFO L131 PetriNetUnfolder]: For 359/359 co-relation queries the response was YES. [2022-11-25 17:10:41,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 108 events. 16/108 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 356 event pairs, 3 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 469. Up to 74 conditions per place. [2022-11-25 17:10:41,419 INFO L137 encePairwiseOnDemand]: 375/384 looper letters, 37 selfloop transitions, 5 changer transitions 12/54 dead transitions. [2022-11-25 17:10:41,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 54 transitions, 519 flow [2022-11-25 17:10:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:10:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:10:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1520 transitions. [2022-11-25 17:10:41,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2022-11-25 17:10:41,422 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1520 transitions. [2022-11-25 17:10:41,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1520 transitions. [2022-11-25 17:10:41,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:41,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1520 transitions. [2022-11-25 17:10:41,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:41,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:41,428 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:41,428 INFO L175 Difference]: Start difference. First operand has 95 places, 38 transitions, 328 flow. Second operand 10 states and 1520 transitions. [2022-11-25 17:10:41,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 54 transitions, 519 flow [2022-11-25 17:10:41,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 54 transitions, 414 flow, removed 26 selfloop flow, removed 20 redundant places. [2022-11-25 17:10:41,430 INFO L231 Difference]: Finished difference. Result has 71 places, 38 transitions, 262 flow [2022-11-25 17:10:41,431 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=262, PETRI_PLACES=71, PETRI_TRANSITIONS=38} [2022-11-25 17:10:41,431 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2022-11-25 17:10:41,431 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 38 transitions, 262 flow [2022-11-25 17:10:41,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:41,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:41,432 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:41,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 17:10:41,432 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash 405577661, now seen corresponding path program 13 times [2022-11-25 17:10:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:41,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476099557] [2022-11-25 17:10:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:43,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:43,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476099557] [2022-11-25 17:10:43,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476099557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:43,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:43,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:10:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493392185] [2022-11-25 17:10:43,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:10:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:43,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:10:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:10:45,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:45,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 38 transitions, 262 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:45,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:45,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:45,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:45,933 INFO L130 PetriNetUnfolder]: 15/105 cut-off events. [2022-11-25 17:10:45,933 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2022-11-25 17:10:45,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 105 events. 15/105 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 343 event pairs, 4 based on Foata normal form. 2/106 useless extension candidates. Maximal degree in co-relation 402. Up to 61 conditions per place. [2022-11-25 17:10:45,934 INFO L137 encePairwiseOnDemand]: 375/384 looper letters, 31 selfloop transitions, 4 changer transitions 17/52 dead transitions. [2022-11-25 17:10:45,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 52 transitions, 428 flow [2022-11-25 17:10:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:10:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:10:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1520 transitions. [2022-11-25 17:10:45,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2022-11-25 17:10:45,937 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1520 transitions. [2022-11-25 17:10:45,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1520 transitions. [2022-11-25 17:10:45,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:45,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1520 transitions. [2022-11-25 17:10:45,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:45,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:45,941 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:45,941 INFO L175 Difference]: Start difference. First operand has 71 places, 38 transitions, 262 flow. Second operand 10 states and 1520 transitions. [2022-11-25 17:10:45,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 52 transitions, 428 flow [2022-11-25 17:10:45,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 52 transitions, 389 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-25 17:10:45,943 INFO L231 Difference]: Finished difference. Result has 71 places, 33 transitions, 216 flow [2022-11-25 17:10:45,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=216, PETRI_PLACES=71, PETRI_TRANSITIONS=33} [2022-11-25 17:10:45,944 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 35 predicate places. [2022-11-25 17:10:45,944 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 33 transitions, 216 flow [2022-11-25 17:10:45,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:45,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:45,945 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:45,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 17:10:45,945 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:45,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash 395538141, now seen corresponding path program 14 times [2022-11-25 17:10:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:45,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447636597] [2022-11-25 17:10:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:45,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:47,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:47,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447636597] [2022-11-25 17:10:47,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447636597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:47,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:47,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:10:47,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639811382] [2022-11-25 17:10:47,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:47,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:10:47,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:10:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:10:49,467 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:49,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 33 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:49,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:49,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:49,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:50,159 INFO L130 PetriNetUnfolder]: 14/86 cut-off events. [2022-11-25 17:10:50,159 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2022-11-25 17:10:50,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 86 events. 14/86 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 222 event pairs, 0 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 326. Up to 31 conditions per place. [2022-11-25 17:10:50,160 INFO L137 encePairwiseOnDemand]: 375/384 looper letters, 29 selfloop transitions, 10 changer transitions 11/50 dead transitions. [2022-11-25 17:10:50,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 50 transitions, 392 flow [2022-11-25 17:10:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:10:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:10:50,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1522 transitions. [2022-11-25 17:10:50,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3963541666666667 [2022-11-25 17:10:50,163 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1522 transitions. [2022-11-25 17:10:50,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1522 transitions. [2022-11-25 17:10:50,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:50,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1522 transitions. [2022-11-25 17:10:50,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 152.2) internal successors, (1522), 10 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:50,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:50,170 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:50,171 INFO L175 Difference]: Start difference. First operand has 71 places, 33 transitions, 216 flow. Second operand 10 states and 1522 transitions. [2022-11-25 17:10:50,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 50 transitions, 392 flow [2022-11-25 17:10:50,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 342 flow, removed 10 selfloop flow, removed 13 redundant places. [2022-11-25 17:10:50,174 INFO L231 Difference]: Finished difference. Result has 63 places, 33 transitions, 207 flow [2022-11-25 17:10:50,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=207, PETRI_PLACES=63, PETRI_TRANSITIONS=33} [2022-11-25 17:10:50,175 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2022-11-25 17:10:50,175 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 33 transitions, 207 flow [2022-11-25 17:10:50,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:50,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:50,176 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:50,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 17:10:50,177 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:50,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1149651059, now seen corresponding path program 15 times [2022-11-25 17:10:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:50,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148185191] [2022-11-25 17:10:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:51,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:51,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148185191] [2022-11-25 17:10:51,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148185191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:51,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:51,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:10:51,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214653733] [2022-11-25 17:10:51,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:51,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:10:51,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:51,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:10:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:10:53,406 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:53,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 33 transitions, 207 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:53,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:53,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:53,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:54,124 INFO L130 PetriNetUnfolder]: 12/80 cut-off events. [2022-11-25 17:10:54,124 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-25 17:10:54,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 80 events. 12/80 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 197 event pairs, 0 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 290. Up to 31 conditions per place. [2022-11-25 17:10:54,125 INFO L137 encePairwiseOnDemand]: 375/384 looper letters, 29 selfloop transitions, 10 changer transitions 7/46 dead transitions. [2022-11-25 17:10:54,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 46 transitions, 349 flow [2022-11-25 17:10:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:10:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:10:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1518 transitions. [2022-11-25 17:10:54,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3953125 [2022-11-25 17:10:54,128 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1518 transitions. [2022-11-25 17:10:54,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1518 transitions. [2022-11-25 17:10:54,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:54,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1518 transitions. [2022-11-25 17:10:54,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.8) internal successors, (1518), 10 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:54,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:54,133 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:54,133 INFO L175 Difference]: Start difference. First operand has 63 places, 33 transitions, 207 flow. Second operand 10 states and 1518 transitions. [2022-11-25 17:10:54,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 46 transitions, 349 flow [2022-11-25 17:10:54,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 46 transitions, 325 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-25 17:10:54,135 INFO L231 Difference]: Finished difference. Result has 63 places, 33 transitions, 214 flow [2022-11-25 17:10:54,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=63, PETRI_TRANSITIONS=33} [2022-11-25 17:10:54,135 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2022-11-25 17:10:54,135 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 33 transitions, 214 flow [2022-11-25 17:10:54,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:54,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:54,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:54,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 17:10:54,136 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:54,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1611894993, now seen corresponding path program 16 times [2022-11-25 17:10:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:54,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566481104] [2022-11-25 17:10:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:54,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:55,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:55,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566481104] [2022-11-25 17:10:55,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566481104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:55,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:55,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:10:55,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440095102] [2022-11-25 17:10:55,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:55,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:10:55,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:10:55,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:10:57,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:10:57,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 33 transitions, 214 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:57,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:57,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:10:57,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:10:58,224 INFO L130 PetriNetUnfolder]: 11/77 cut-off events. [2022-11-25 17:10:58,224 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-25 17:10:58,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 77 events. 11/77 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 1 based on Foata normal form. 2/78 useless extension candidates. Maximal degree in co-relation 280. Up to 23 conditions per place. [2022-11-25 17:10:58,225 INFO L137 encePairwiseOnDemand]: 375/384 looper letters, 25 selfloop transitions, 8 changer transitions 11/44 dead transitions. [2022-11-25 17:10:58,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 44 transitions, 334 flow [2022-11-25 17:10:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:10:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:10:58,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1518 transitions. [2022-11-25 17:10:58,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3953125 [2022-11-25 17:10:58,228 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1518 transitions. [2022-11-25 17:10:58,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1518 transitions. [2022-11-25 17:10:58,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:10:58,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1518 transitions. [2022-11-25 17:10:58,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.8) internal successors, (1518), 10 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:58,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:58,235 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:58,235 INFO L175 Difference]: Start difference. First operand has 63 places, 33 transitions, 214 flow. Second operand 10 states and 1518 transitions. [2022-11-25 17:10:58,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 44 transitions, 334 flow [2022-11-25 17:10:58,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 44 transitions, 298 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-25 17:10:58,238 INFO L231 Difference]: Finished difference. Result has 62 places, 28 transitions, 156 flow [2022-11-25 17:10:58,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=156, PETRI_PLACES=62, PETRI_TRANSITIONS=28} [2022-11-25 17:10:58,238 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-11-25 17:10:58,239 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 28 transitions, 156 flow [2022-11-25 17:10:58,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:58,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:58,239 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:10:58,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 17:10:58,240 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:10:58,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:58,240 INFO L85 PathProgramCache]: Analyzing trace with hash -643012667, now seen corresponding path program 17 times [2022-11-25 17:10:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:58,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387414674] [2022-11-25 17:10:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:58,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:59,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387414674] [2022-11-25 17:10:59,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387414674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:59,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:59,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:10:59,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425521228] [2022-11-25 17:10:59,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:59,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:10:59,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:59,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:10:59,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:11:01,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:11:01,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 28 transitions, 156 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:01,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:11:01,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:11:01,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:11:02,043 INFO L130 PetriNetUnfolder]: 11/59 cut-off events. [2022-11-25 17:11:02,043 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-11-25 17:11:02,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 59 events. 11/59 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 207. Up to 11 conditions per place. [2022-11-25 17:11:02,044 INFO L137 encePairwiseOnDemand]: 374/384 looper letters, 14 selfloop transitions, 8 changer transitions 15/37 dead transitions. [2022-11-25 17:11:02,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 37 transitions, 246 flow [2022-11-25 17:11:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:11:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:11:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1515 transitions. [2022-11-25 17:11:02,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2022-11-25 17:11:02,047 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1515 transitions. [2022-11-25 17:11:02,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1515 transitions. [2022-11-25 17:11:02,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:11:02,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1515 transitions. [2022-11-25 17:11:02,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.5) internal successors, (1515), 10 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:02,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:02,051 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:02,051 INFO L175 Difference]: Start difference. First operand has 62 places, 28 transitions, 156 flow. Second operand 10 states and 1515 transitions. [2022-11-25 17:11:02,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 37 transitions, 246 flow [2022-11-25 17:11:02,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 37 transitions, 211 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-25 17:11:02,053 INFO L231 Difference]: Finished difference. Result has 55 places, 22 transitions, 98 flow [2022-11-25 17:11:02,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=22} [2022-11-25 17:11:02,054 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-11-25 17:11:02,054 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 22 transitions, 98 flow [2022-11-25 17:11:02,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:02,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:11:02,055 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 17:11:02,055 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:11:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1707050919, now seen corresponding path program 18 times [2022-11-25 17:11:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:02,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398041614] [2022-11-25 17:11:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:03,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:03,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398041614] [2022-11-25 17:11:03,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398041614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:03,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:03,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:11:03,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802106275] [2022-11-25 17:11:03,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:03,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:11:03,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:03,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:11:03,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:11:05,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 384 [2022-11-25 17:11:05,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 22 transitions, 98 flow. Second operand has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:05,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:11:05,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 384 [2022-11-25 17:11:05,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:11:05,755 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2022-11-25 17:11:05,755 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 17:11:05,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 21 events. 0/21 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-11-25 17:11:05,756 INFO L137 encePairwiseOnDemand]: 374/384 looper letters, 12 selfloop transitions, 9 changer transitions 0/21 dead transitions. [2022-11-25 17:11:05,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 21 transitions, 136 flow [2022-11-25 17:11:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:11:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:11:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1502 transitions. [2022-11-25 17:11:05,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39114583333333336 [2022-11-25 17:11:05,759 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1502 transitions. [2022-11-25 17:11:05,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1502 transitions. [2022-11-25 17:11:05,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:11:05,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1502 transitions. [2022-11-25 17:11:05,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 150.2) internal successors, (1502), 10 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:05,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:05,765 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 384.0) internal successors, (4224), 11 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:05,765 INFO L175 Difference]: Start difference. First operand has 55 places, 22 transitions, 98 flow. Second operand 10 states and 1502 transitions. [2022-11-25 17:11:05,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 21 transitions, 136 flow [2022-11-25 17:11:05,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 21 transitions, 90 flow, removed 1 selfloop flow, removed 21 redundant places. [2022-11-25 17:11:05,767 INFO L231 Difference]: Finished difference. Result has 40 places, 21 transitions, 66 flow [2022-11-25 17:11:05,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=66, PETRI_PLACES=40, PETRI_TRANSITIONS=21} [2022-11-25 17:11:05,767 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2022-11-25 17:11:05,768 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 21 transitions, 66 flow [2022-11-25 17:11:05,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.6153846153846) internal successors, (1945), 13 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:05,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:11:05,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 17:11:05,769 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-25 17:11:05,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1707050909, now seen corresponding path program 6 times [2022-11-25 17:11:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:05,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619990969] [2022-11-25 17:11:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:05,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:06,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:06,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619990969] [2022-11-25 17:11:06,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619990969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:06,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:06,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:11:06,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252717857] [2022-11-25 17:11:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:11:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:11:06,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:11:07,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 384 [2022-11-25 17:11:07,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 21 transitions, 66 flow. Second operand has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:07,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:11:07,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 384 [2022-11-25 17:11:07,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:11:07,825 INFO L130 PetriNetUnfolder]: 0/20 cut-off events. [2022-11-25 17:11:07,825 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:11:07,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 20 events. 0/20 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2022-11-25 17:11:07,825 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2022-11-25 17:11:07,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 20 transitions, 98 flow [2022-11-25 17:11:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:11:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:11:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1104 transitions. [2022-11-25 17:11:07,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2022-11-25 17:11:07,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1104 transitions. [2022-11-25 17:11:07,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1104 transitions. [2022-11-25 17:11:07,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:11:07,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1104 transitions. [2022-11-25 17:11:07,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:07,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:07,834 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:07,834 INFO L175 Difference]: Start difference. First operand has 40 places, 21 transitions, 66 flow. Second operand 7 states and 1104 transitions. [2022-11-25 17:11:07,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 20 transitions, 98 flow [2022-11-25 17:11:07,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 83 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 17:11:07,835 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2022-11-25 17:11:07,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2022-11-25 17:11:07,836 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-11-25 17:11:07,836 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2022-11-25 17:11:07,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 156.72727272727272) internal successors, (1724), 11 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:11:07,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-11-25 17:11:07,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-11-25 17:11:07,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-11-25 17:11:07,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-11-25 17:11:07,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-11-25 17:11:07,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-11-25 17:11:07,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-25 17:11:07,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-25 17:11:07,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 17:11:07,843 INFO L445 BasicCegarLoop]: Path program histogram: [18, 6, 1, 1, 1, 1] [2022-11-25 17:11:07,847 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:11:07,848 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:11:07,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:11:07 BasicIcfg [2022-11-25 17:11:07,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:11:07,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:11:07,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:11:07,853 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:11:07,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:08:28" (3/4) ... [2022-11-25 17:11:07,857 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:11:07,865 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_callback [2022-11-25 17:11:07,872 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-25 17:11:07,872 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-25 17:11:07,873 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:11:07,873 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:11:07,918 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:11:07,918 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:11:07,919 INFO L158 Benchmark]: Toolchain (without parser) took 161868.55ms. Allocated memory was 195.0MB in the beginning and 589.3MB in the end (delta: 394.3MB). Free memory was 159.7MB in the beginning and 497.8MB in the end (delta: -338.1MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2022-11-25 17:11:07,919 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:11:07,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1207.06ms. Allocated memory is still 195.0MB. Free memory was 159.7MB in the beginning and 103.3MB in the end (delta: 56.4MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-25 17:11:07,920 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.43ms. Allocated memory is still 195.0MB. Free memory was 102.4MB in the beginning and 99.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:11:07,921 INFO L158 Benchmark]: Boogie Preprocessor took 93.58ms. Allocated memory is still 195.0MB. Free memory was 99.1MB in the beginning and 97.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:11:07,921 INFO L158 Benchmark]: RCFGBuilder took 1018.76ms. Allocated memory is still 195.0MB. Free memory was 97.0MB in the beginning and 156.8MB in the end (delta: -59.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-25 17:11:07,921 INFO L158 Benchmark]: TraceAbstraction took 159377.26ms. Allocated memory was 195.0MB in the beginning and 589.3MB in the end (delta: 394.3MB). Free memory was 155.7MB in the beginning and 502.0MB in the end (delta: -346.3MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2022-11-25 17:11:07,922 INFO L158 Benchmark]: Witness Printer took 66.30ms. Allocated memory is still 589.3MB. Free memory was 501.0MB in the beginning and 497.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:11:07,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1207.06ms. Allocated memory is still 195.0MB. Free memory was 159.7MB in the beginning and 103.3MB in the end (delta: 56.4MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.43ms. Allocated memory is still 195.0MB. Free memory was 102.4MB in the beginning and 99.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.58ms. Allocated memory is still 195.0MB. Free memory was 99.1MB in the beginning and 97.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1018.76ms. Allocated memory is still 195.0MB. Free memory was 97.0MB in the beginning and 156.8MB in the end (delta: -59.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 159377.26ms. Allocated memory was 195.0MB in the beginning and 589.3MB in the end (delta: 394.3MB). Free memory was 155.7MB in the beginning and 502.0MB in the end (delta: -346.3MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. * Witness Printer took 66.30ms. Allocated memory is still 589.3MB. Free memory was 501.0MB in the beginning and 497.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 58.2s, 180 PlacesBefore, 36 PlacesAfterwards, 180 TransitionsBefore, 32 TransitionsAfterwards, 2652 CoEnabledTransitionPairs, 8 FixpointIterations, 110 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 190 TotalNumberOfCompositions, 5922 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2677, independent: 2451, independent conditional: 0, independent unconditional: 2451, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 82, unknown conditional: 0, unknown unconditional: 82] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1798, independent: 1741, independent conditional: 0, independent unconditional: 1741, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1798, independent: 1736, independent conditional: 0, independent unconditional: 1736, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37771, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 2038, dependent conditional: 0, dependent unconditional: 2038, unknown: 35705, unknown conditional: 0, unknown unconditional: 35705] ], Cache Queries: [ total: 2677, independent: 710, independent conditional: 0, independent unconditional: 710, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 1863, unknown conditional: 0, unknown unconditional: 1863] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 11, Unknown conditional cache size: 0, Unknown unconditional cache size: 11 - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: 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 4 procedures, 202 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 159.2s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 62.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 58.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8878 SdHoareTripleChecker+Valid, 51.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7432 mSDsluCounter, 8377 SdHoareTripleChecker+Invalid, 45.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8230 mSDsCounter, 801 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45553 IncrementalHoareTripleChecker+Invalid, 46354 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 801 mSolverCounterUnsat, 147 mSDtfsCounter, 45553 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1748occurred in iteration=15, InterpolantAutomatonStates: 240, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 36.5s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 496 ConstructedInterpolants, 0 QuantifiedInterpolants, 10801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:11:07,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bdc0f65-bd4f-47eb-903f-37253a46046c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE