./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 8e0bd33ffca0122f84e298c52bb9fdae01e72661c94f68aaa49ed0f187d88b87 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:20,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:20,223 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:36:20,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:20,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:20,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:20,261 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:20,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:20,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:20,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:20,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:20,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:20,265 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:20,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:20,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:20,267 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:20,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:20,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:20,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:20,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:20,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:20,271 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:20,272 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:20,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:20,273 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:20,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:20,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:20,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:20,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:20,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:20,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:20,277 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:20,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:20,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:20,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:20,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:20,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:20,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:20,282 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:20,282 INFO L153 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_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0bd33ffca0122f84e298c52bb9fdae01e72661c94f68aaa49ed0f187d88b87 [2023-11-19 07:36:20,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:20,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:20,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:20,649 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:20,650 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:20,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 07:36:23,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:24,124 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:24,125 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 07:36:24,145 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/data/aeb8408a7/1516d20857bd4587a111bd46b26c75e7/FLAGb9a7b4a96 [2023-11-19 07:36:24,164 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/data/aeb8408a7/1516d20857bd4587a111bd46b26c75e7 [2023-11-19 07:36:24,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:24,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:24,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:24,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:24,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:24,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:24,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bcca0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24, skipping insertion in model container [2023-11-19 07:36:24,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:24,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:24,524 WARN L240 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_24d361e3-9c45-4b58-bd86-5124a54bf9bb/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2023-11-19 07:36:24,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:24,813 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:24,828 WARN L240 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_24d361e3-9c45-4b58-bd86-5124a54bf9bb/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2023-11-19 07:36:24,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:24,955 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:24,955 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:36:24,963 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:24,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24 WrapperNode [2023-11-19 07:36:24,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:24,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:24,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:24,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:24,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:24,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,039 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-19 07:36:25,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:25,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:25,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:25,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:25,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:25,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:25,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:25,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:25,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (1/1) ... [2023-11-19 07:36:25,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:25,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:25,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:25,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d361e3-9c45-4b58-bd86-5124a54bf9bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:36:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:36:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:36:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:36:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:36:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:36:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:36:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:36:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:36:25,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:36:25,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:36:25,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:25,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:25,219 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:36:25,414 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:25,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:25,946 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:26,222 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:26,223 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:36:26,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:26 BoogieIcfgContainer [2023-11-19 07:36:26,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:26,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:26,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:26,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:26,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:24" (1/3) ... [2023-11-19 07:36:26,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adb8b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:26, skipping insertion in model container [2023-11-19 07:36:26,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:24" (2/3) ... [2023-11-19 07:36:26,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adb8b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:26, skipping insertion in model container [2023-11-19 07:36:26,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:26" (3/3) ... [2023-11-19 07:36:26,245 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 07:36:26,256 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:36:26,267 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:26,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:36:26,267 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:36:26,333 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:36:26,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 236 flow [2023-11-19 07:36:26,432 INFO L124 PetriNetUnfolderBase]: 2/109 cut-off events. [2023-11-19 07:36:26,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:26,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-19 07:36:26,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 236 flow [2023-11-19 07:36:26,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2023-11-19 07:36:26,453 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:36:26,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2023-11-19 07:36:26,477 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2023-11-19 07:36:26,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2023-11-19 07:36:26,543 INFO L124 PetriNetUnfolderBase]: 2/109 cut-off events. [2023-11-19 07:36:26,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:26,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-19 07:36:26,548 INFO L119 LiptonReduction]: Number of co-enabled transitions 2304 [2023-11-19 07:36:31,233 INFO L134 LiptonReduction]: Checked pairs total: 5500 [2023-11-19 07:36:31,233 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-11-19 07:36:31,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:31,257 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=LoopHeads, 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;@7f2403f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:31,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:36:31,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:36:31,263 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-19 07:36:31,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:36:31,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:31,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:31,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:31,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash -329741430, now seen corresponding path program 1 times [2023-11-19 07:36:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:31,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287291177] [2023-11-19 07:36:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:31,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:31,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287291177] [2023-11-19 07:36:31,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287291177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:31,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:31,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:36:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655142641] [2023-11-19 07:36:31,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:31,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:31,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:31,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:31,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 207 [2023-11-19 07:36:31,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:31,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:31,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 207 [2023-11-19 07:36:31,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:32,501 INFO L124 PetriNetUnfolderBase]: 1555/2452 cut-off events. [2023-11-19 07:36:32,501 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-19 07:36:32,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4799 conditions, 2452 events. 1555/2452 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12027 event pairs, 325 based on Foata normal form. 96/2356 useless extension candidates. Maximal degree in co-relation 4788. Up to 1735 conditions per place. [2023-11-19 07:36:32,530 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 31 selfloop transitions, 2 changer transitions 4/38 dead transitions. [2023-11-19 07:36:32,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 159 flow [2023-11-19 07:36:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:36:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-11-19 07:36:32,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5281803542673108 [2023-11-19 07:36:32,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-11-19 07:36:32,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-11-19 07:36:32,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:32,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-11-19 07:36:32,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:32,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:32,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:32,566 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 328 transitions. [2023-11-19 07:36:32,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 159 flow [2023-11-19 07:36:32,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:32,573 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 54 flow [2023-11-19 07:36:32,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-11-19 07:36:32,579 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-11-19 07:36:32,579 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 54 flow [2023-11-19 07:36:32,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:32,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:32,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:32,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:32,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:32,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash -734840251, now seen corresponding path program 1 times [2023-11-19 07:36:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:32,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119507728] [2023-11-19 07:36:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:32,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:33,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:33,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119507728] [2023-11-19 07:36:33,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119507728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:33,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:33,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:33,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118902003] [2023-11-19 07:36:33,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:33,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:33,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:33,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:33,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:33,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 207 [2023-11-19 07:36:33,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:33,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:33,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 207 [2023-11-19 07:36:33,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:34,174 INFO L124 PetriNetUnfolderBase]: 1463/2192 cut-off events. [2023-11-19 07:36:34,174 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-11-19 07:36:34,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 2192 events. 1463/2192 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9527 event pairs, 460 based on Foata normal form. 132/2324 useless extension candidates. Maximal degree in co-relation 4556. Up to 1094 conditions per place. [2023-11-19 07:36:34,188 INFO L140 encePairwiseOnDemand]: 197/207 looper letters, 34 selfloop transitions, 8 changer transitions 27/69 dead transitions. [2023-11-19 07:36:34,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 294 flow [2023-11-19 07:36:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 674 transitions. [2023-11-19 07:36:34,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46514837819185645 [2023-11-19 07:36:34,194 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 674 transitions. [2023-11-19 07:36:34,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 674 transitions. [2023-11-19 07:36:34,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:34,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 674 transitions. [2023-11-19 07:36:34,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 96.28571428571429) internal successors, (674), 7 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:34,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 207.0) internal successors, (1656), 8 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:34,204 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 207.0) internal successors, (1656), 8 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:34,204 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 54 flow. Second operand 7 states and 674 transitions. [2023-11-19 07:36:34,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 294 flow [2023-11-19 07:36:34,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 69 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:34,208 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 126 flow [2023-11-19 07:36:34,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-11-19 07:36:34,209 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-11-19 07:36:34,209 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 126 flow [2023-11-19 07:36:34,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:34,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:34,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:34,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:34,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash 396677787, now seen corresponding path program 1 times [2023-11-19 07:36:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:34,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167564686] [2023-11-19 07:36:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:34,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:34,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:34,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167564686] [2023-11-19 07:36:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167564686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:34,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:34,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458494424] [2023-11-19 07:36:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:34,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:34,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:34,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 207 [2023-11-19 07:36:34,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:34,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:34,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 207 [2023-11-19 07:36:34,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:35,105 INFO L124 PetriNetUnfolderBase]: 1257/1907 cut-off events. [2023-11-19 07:36:35,106 INFO L125 PetriNetUnfolderBase]: For 1899/1899 co-relation queries the response was YES. [2023-11-19 07:36:35,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5941 conditions, 1907 events. 1257/1907 cut-off events. For 1899/1899 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8227 event pairs, 296 based on Foata normal form. 71/1978 useless extension candidates. Maximal degree in co-relation 5925. Up to 1645 conditions per place. [2023-11-19 07:36:35,122 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 39 selfloop transitions, 4 changer transitions 19/62 dead transitions. [2023-11-19 07:36:35,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 396 flow [2023-11-19 07:36:35,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 513 transitions. [2023-11-19 07:36:35,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956521739130435 [2023-11-19 07:36:35,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 513 transitions. [2023-11-19 07:36:35,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 513 transitions. [2023-11-19 07:36:35,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:35,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 513 transitions. [2023-11-19 07:36:35,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.6) internal successors, (513), 5 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:35,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:35,132 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:35,132 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 126 flow. Second operand 5 states and 513 transitions. [2023-11-19 07:36:35,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 396 flow [2023-11-19 07:36:35,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 389 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:35,143 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 166 flow [2023-11-19 07:36:35,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-11-19 07:36:35,144 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-11-19 07:36:35,145 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 166 flow [2023-11-19 07:36:35,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:35,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:35,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:35,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:35,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:35,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash 974041000, now seen corresponding path program 1 times [2023-11-19 07:36:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695740160] [2023-11-19 07:36:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:36,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695740160] [2023-11-19 07:36:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695740160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:36,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:36,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:36,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675587264] [2023-11-19 07:36:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:36,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:36:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:36:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:36,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 207 [2023-11-19 07:36:36,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 166 flow. Second operand has 8 states, 8 states have (on average 92.75) internal successors, (742), 8 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:36,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:36,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 207 [2023-11-19 07:36:36,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:37,126 INFO L124 PetriNetUnfolderBase]: 1080/1694 cut-off events. [2023-11-19 07:36:37,126 INFO L125 PetriNetUnfolderBase]: For 2737/2737 co-relation queries the response was YES. [2023-11-19 07:36:37,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5729 conditions, 1694 events. 1080/1694 cut-off events. For 2737/2737 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7390 event pairs, 69 based on Foata normal form. 53/1747 useless extension candidates. Maximal degree in co-relation 5710. Up to 1186 conditions per place. [2023-11-19 07:36:37,143 INFO L140 encePairwiseOnDemand]: 202/207 looper letters, 41 selfloop transitions, 4 changer transitions 15/64 dead transitions. [2023-11-19 07:36:37,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 64 transitions, 425 flow [2023-11-19 07:36:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:36:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 599 transitions. [2023-11-19 07:36:37,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822866344605475 [2023-11-19 07:36:37,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 599 transitions. [2023-11-19 07:36:37,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 599 transitions. [2023-11-19 07:36:37,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:37,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 599 transitions. [2023-11-19 07:36:37,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:37,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:37,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:37,156 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 166 flow. Second operand 6 states and 599 transitions. [2023-11-19 07:36:37,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 64 transitions, 425 flow [2023-11-19 07:36:37,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 64 transitions, 413 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:37,168 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 181 flow [2023-11-19 07:36:37,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-11-19 07:36:37,170 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-11-19 07:36:37,170 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 181 flow [2023-11-19 07:36:37,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.75) internal successors, (742), 8 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:37,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:37,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:37,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:37,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:37,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:37,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2032139959, now seen corresponding path program 1 times [2023-11-19 07:36:37,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:37,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691338131] [2023-11-19 07:36:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691338131] [2023-11-19 07:36:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691338131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:38,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000567808] [2023-11-19 07:36:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:38,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:36:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:36:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:38,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 207 [2023-11-19 07:36:38,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 181 flow. Second operand has 9 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:38,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:38,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 207 [2023-11-19 07:36:38,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:40,048 INFO L124 PetriNetUnfolderBase]: 1843/2772 cut-off events. [2023-11-19 07:36:40,049 INFO L125 PetriNetUnfolderBase]: For 4613/4613 co-relation queries the response was YES. [2023-11-19 07:36:40,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9706 conditions, 2772 events. 1843/2772 cut-off events. For 4613/4613 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12697 event pairs, 110 based on Foata normal form. 80/2852 useless extension candidates. Maximal degree in co-relation 9684. Up to 1401 conditions per place. [2023-11-19 07:36:40,074 INFO L140 encePairwiseOnDemand]: 194/207 looper letters, 78 selfloop transitions, 36 changer transitions 27/141 dead transitions. [2023-11-19 07:36:40,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 141 transitions, 1014 flow [2023-11-19 07:36:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:36:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:36:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1113 transitions. [2023-11-19 07:36:40,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44806763285024154 [2023-11-19 07:36:40,081 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1113 transitions. [2023-11-19 07:36:40,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1113 transitions. [2023-11-19 07:36:40,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:40,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1113 transitions. [2023-11-19 07:36:40,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.75) internal successors, (1113), 12 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:40,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 207.0) internal successors, (2691), 13 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:40,092 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 207.0) internal successors, (2691), 13 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:40,092 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 181 flow. Second operand 12 states and 1113 transitions. [2023-11-19 07:36:40,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 141 transitions, 1014 flow [2023-11-19 07:36:40,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 141 transitions, 1000 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:40,116 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 545 flow [2023-11-19 07:36:40,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=545, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2023-11-19 07:36:40,119 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-11-19 07:36:40,119 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 545 flow [2023-11-19 07:36:40,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.66666666666667) internal successors, (762), 9 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:40,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:40,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:40,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:36:40,121 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:40,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 741765647, now seen corresponding path program 2 times [2023-11-19 07:36:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:40,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557241973] [2023-11-19 07:36:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:40,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557241973] [2023-11-19 07:36:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557241973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:41,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:41,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:41,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992001732] [2023-11-19 07:36:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:41,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:36:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:36:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:41,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 207 [2023-11-19 07:36:41,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 545 flow. Second operand has 9 states, 9 states have (on average 91.66666666666667) internal successors, (825), 9 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:41,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:41,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 207 [2023-11-19 07:36:41,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:42,650 INFO L124 PetriNetUnfolderBase]: 1852/2858 cut-off events. [2023-11-19 07:36:42,650 INFO L125 PetriNetUnfolderBase]: For 11072/11259 co-relation queries the response was YES. [2023-11-19 07:36:42,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12660 conditions, 2858 events. 1852/2858 cut-off events. For 11072/11259 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14010 event pairs, 266 based on Foata normal form. 171/2984 useless extension candidates. Maximal degree in co-relation 12632. Up to 1354 conditions per place. [2023-11-19 07:36:42,688 INFO L140 encePairwiseOnDemand]: 201/207 looper letters, 65 selfloop transitions, 18 changer transitions 19/110 dead transitions. [2023-11-19 07:36:42,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 1075 flow [2023-11-19 07:36:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 688 transitions. [2023-11-19 07:36:42,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748102139406487 [2023-11-19 07:36:42,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 688 transitions. [2023-11-19 07:36:42,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 688 transitions. [2023-11-19 07:36:42,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:42,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 688 transitions. [2023-11-19 07:36:42,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:42,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 207.0) internal successors, (1656), 8 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:42,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 207.0) internal successors, (1656), 8 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:42,701 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 545 flow. Second operand 7 states and 688 transitions. [2023-11-19 07:36:42,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 1075 flow [2023-11-19 07:36:42,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 1067 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:42,728 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 646 flow [2023-11-19 07:36:42,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=646, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-11-19 07:36:42,731 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2023-11-19 07:36:42,731 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 646 flow [2023-11-19 07:36:42,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.66666666666667) internal successors, (825), 9 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:42,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:42,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:42,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:36:42,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:42,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash -268189225, now seen corresponding path program 1 times [2023-11-19 07:36:42,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:42,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082021823] [2023-11-19 07:36:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:42,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:43,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:43,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082021823] [2023-11-19 07:36:43,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082021823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:43,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:43,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:36:43,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226155047] [2023-11-19 07:36:43,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:43,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:36:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:43,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:36:43,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:44,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 207 [2023-11-19 07:36:44,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 646 flow. Second operand has 10 states, 10 states have (on average 84.6) internal successors, (846), 10 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:44,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:44,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 207 [2023-11-19 07:36:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:45,937 INFO L124 PetriNetUnfolderBase]: 3018/4568 cut-off events. [2023-11-19 07:36:45,938 INFO L125 PetriNetUnfolderBase]: For 17099/17099 co-relation queries the response was YES. [2023-11-19 07:36:45,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21433 conditions, 4568 events. 3018/4568 cut-off events. For 17099/17099 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 23932 event pairs, 156 based on Foata normal form. 30/4598 useless extension candidates. Maximal degree in co-relation 21402. Up to 2207 conditions per place. [2023-11-19 07:36:45,986 INFO L140 encePairwiseOnDemand]: 194/207 looper letters, 79 selfloop transitions, 93 changer transitions 68/240 dead transitions. [2023-11-19 07:36:45,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 240 transitions, 2417 flow [2023-11-19 07:36:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:36:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-19 07:36:45,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1396 transitions. [2023-11-19 07:36:45,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449597423510467 [2023-11-19 07:36:45,994 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1396 transitions. [2023-11-19 07:36:45,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1396 transitions. [2023-11-19 07:36:45,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:45,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1396 transitions. [2023-11-19 07:36:46,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 93.06666666666666) internal successors, (1396), 15 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 207.0) internal successors, (3312), 16 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,010 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 207.0) internal successors, (3312), 16 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,011 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 646 flow. Second operand 15 states and 1396 transitions. [2023-11-19 07:36:46,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 240 transitions, 2417 flow [2023-11-19 07:36:46,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 240 transitions, 2380 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-19 07:36:46,091 INFO L231 Difference]: Finished difference. Result has 82 places, 130 transitions, 1530 flow [2023-11-19 07:36:46,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1530, PETRI_PLACES=82, PETRI_TRANSITIONS=130} [2023-11-19 07:36:46,093 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2023-11-19 07:36:46,093 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 130 transitions, 1530 flow [2023-11-19 07:36:46,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.6) internal successors, (846), 10 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:46,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:46,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:46,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:36:46,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:46,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1180213185, now seen corresponding path program 2 times [2023-11-19 07:36:46,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:46,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352677590] [2023-11-19 07:36:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:46,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:47,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:47,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352677590] [2023-11-19 07:36:47,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352677590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:47,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:47,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320426273] [2023-11-19 07:36:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:47,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:36:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:36:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:47,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 207 [2023-11-19 07:36:47,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 130 transitions, 1530 flow. Second operand has 9 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:47,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:47,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 207 [2023-11-19 07:36:47,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:48,707 INFO L124 PetriNetUnfolderBase]: 2381/3737 cut-off events. [2023-11-19 07:36:48,707 INFO L125 PetriNetUnfolderBase]: For 25789/26052 co-relation queries the response was YES. [2023-11-19 07:36:48,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21939 conditions, 3737 events. 2381/3737 cut-off events. For 25789/26052 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 20254 event pairs, 160 based on Foata normal form. 193/3915 useless extension candidates. Maximal degree in co-relation 21900. Up to 2017 conditions per place. [2023-11-19 07:36:48,757 INFO L140 encePairwiseOnDemand]: 199/207 looper letters, 110 selfloop transitions, 28 changer transitions 57/210 dead transitions. [2023-11-19 07:36:48,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 210 transitions, 2706 flow [2023-11-19 07:36:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:36:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:36:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 890 transitions. [2023-11-19 07:36:48,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777241009125067 [2023-11-19 07:36:48,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 890 transitions. [2023-11-19 07:36:48,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 890 transitions. [2023-11-19 07:36:48,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:48,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 890 transitions. [2023-11-19 07:36:48,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.88888888888889) internal successors, (890), 9 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 207.0) internal successors, (2070), 10 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,774 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 207.0) internal successors, (2070), 10 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,774 INFO L175 Difference]: Start difference. First operand has 82 places, 130 transitions, 1530 flow. Second operand 9 states and 890 transitions. [2023-11-19 07:36:48,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 210 transitions, 2706 flow [2023-11-19 07:36:48,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 210 transitions, 2605 flow, removed 46 selfloop flow, removed 4 redundant places. [2023-11-19 07:36:48,904 INFO L231 Difference]: Finished difference. Result has 85 places, 130 transitions, 1567 flow [2023-11-19 07:36:48,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1567, PETRI_PLACES=85, PETRI_TRANSITIONS=130} [2023-11-19 07:36:48,907 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 50 predicate places. [2023-11-19 07:36:48,907 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 130 transitions, 1567 flow [2023-11-19 07:36:48,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:48,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:48,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:48,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:36:48,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:48,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1905096113, now seen corresponding path program 3 times [2023-11-19 07:36:48,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:48,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788263476] [2023-11-19 07:36:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:49,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:49,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:49,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788263476] [2023-11-19 07:36:49,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788263476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:49,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:49,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:49,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870208473] [2023-11-19 07:36:49,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:36:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:36:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:49,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 207 [2023-11-19 07:36:49,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 130 transitions, 1567 flow. Second operand has 9 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:49,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:49,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 207 [2023-11-19 07:36:49,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:51,038 INFO L124 PetriNetUnfolderBase]: 2144/3406 cut-off events. [2023-11-19 07:36:51,038 INFO L125 PetriNetUnfolderBase]: For 28395/28597 co-relation queries the response was YES. [2023-11-19 07:36:51,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21213 conditions, 3406 events. 2144/3406 cut-off events. For 28395/28597 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18444 event pairs, 145 based on Foata normal form. 168/3561 useless extension candidates. Maximal degree in co-relation 21172. Up to 2326 conditions per place. [2023-11-19 07:36:51,082 INFO L140 encePairwiseOnDemand]: 197/207 looper letters, 106 selfloop transitions, 38 changer transitions 34/193 dead transitions. [2023-11-19 07:36:51,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 193 transitions, 2608 flow [2023-11-19 07:36:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:36:51,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:36:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 788 transitions. [2023-11-19 07:36:51,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758454106280193 [2023-11-19 07:36:51,087 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 788 transitions. [2023-11-19 07:36:51,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 788 transitions. [2023-11-19 07:36:51,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:51,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 788 transitions. [2023-11-19 07:36:51,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 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) [2023-11-19 07:36:51,095 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 207.0) internal successors, (1863), 9 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) [2023-11-19 07:36:51,095 INFO L175 Difference]: Start difference. First operand has 85 places, 130 transitions, 1567 flow. Second operand 8 states and 788 transitions. [2023-11-19 07:36:51,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 193 transitions, 2608 flow [2023-11-19 07:36:51,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 193 transitions, 2490 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-11-19 07:36:51,300 INFO L231 Difference]: Finished difference. Result has 83 places, 142 transitions, 1812 flow [2023-11-19 07:36:51,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1812, PETRI_PLACES=83, PETRI_TRANSITIONS=142} [2023-11-19 07:36:51,301 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 48 predicate places. [2023-11-19 07:36:51,302 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 142 transitions, 1812 flow [2023-11-19 07:36:51,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:51,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:51,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:51,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:36:51,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:51,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:51,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1052168043, now seen corresponding path program 4 times [2023-11-19 07:36:51,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:51,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073826259] [2023-11-19 07:36:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:52,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:52,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073826259] [2023-11-19 07:36:52,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073826259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:52,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:52,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:36:52,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562871946] [2023-11-19 07:36:52,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:52,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:36:52,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:52,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:36:52,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:52,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 207 [2023-11-19 07:36:52,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 142 transitions, 1812 flow. Second operand has 10 states, 10 states have (on average 82.6) internal successors, (826), 10 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:52,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:52,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 207 [2023-11-19 07:36:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:54,012 INFO L124 PetriNetUnfolderBase]: 2615/4072 cut-off events. [2023-11-19 07:36:54,012 INFO L125 PetriNetUnfolderBase]: For 31633/31633 co-relation queries the response was YES. [2023-11-19 07:36:54,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25262 conditions, 4072 events. 2615/4072 cut-off events. For 31633/31633 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 22095 event pairs, 491 based on Foata normal form. 30/4102 useless extension candidates. Maximal degree in co-relation 25222. Up to 2653 conditions per place. [2023-11-19 07:36:54,065 INFO L140 encePairwiseOnDemand]: 194/207 looper letters, 110 selfloop transitions, 102 changer transitions 36/248 dead transitions. [2023-11-19 07:36:54,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 248 transitions, 3426 flow [2023-11-19 07:36:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:36:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:36:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 990 transitions. [2023-11-19 07:36:54,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2023-11-19 07:36:54,070 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 990 transitions. [2023-11-19 07:36:54,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 990 transitions. [2023-11-19 07:36:54,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:54,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 990 transitions. [2023-11-19 07:36:54,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 207.0) internal successors, (2484), 12 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,080 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 207.0) internal successors, (2484), 12 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,080 INFO L175 Difference]: Start difference. First operand has 83 places, 142 transitions, 1812 flow. Second operand 11 states and 990 transitions. [2023-11-19 07:36:54,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 248 transitions, 3426 flow [2023-11-19 07:36:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 248 transitions, 3287 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-11-19 07:36:54,222 INFO L231 Difference]: Finished difference. Result has 93 places, 180 transitions, 2690 flow [2023-11-19 07:36:54,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=1727, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2690, PETRI_PLACES=93, PETRI_TRANSITIONS=180} [2023-11-19 07:36:54,224 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 58 predicate places. [2023-11-19 07:36:54,225 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 180 transitions, 2690 flow [2023-11-19 07:36:54,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 82.6) internal successors, (826), 10 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:54,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:54,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:54,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:36:54,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:54,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:54,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1971817407, now seen corresponding path program 5 times [2023-11-19 07:36:54,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:54,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362605034] [2023-11-19 07:36:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:55,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:55,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362605034] [2023-11-19 07:36:55,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362605034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:55,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:55,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:55,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243457475] [2023-11-19 07:36:55,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:55,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:36:55,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:36:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:55,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 207 [2023-11-19 07:36:55,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 180 transitions, 2690 flow. Second operand has 9 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:55,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:55,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 207 [2023-11-19 07:36:55,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:57,571 INFO L124 PetriNetUnfolderBase]: 2948/4593 cut-off events. [2023-11-19 07:36:57,572 INFO L125 PetriNetUnfolderBase]: For 40484/40484 co-relation queries the response was YES. [2023-11-19 07:36:57,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30929 conditions, 4593 events. 2948/4593 cut-off events. For 40484/40484 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 25473 event pairs, 166 based on Foata normal form. 30/4623 useless extension candidates. Maximal degree in co-relation 30883. Up to 2549 conditions per place. [2023-11-19 07:36:57,627 INFO L140 encePairwiseOnDemand]: 194/207 looper letters, 103 selfloop transitions, 175 changer transitions 52/330 dead transitions. [2023-11-19 07:36:57,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 330 transitions, 5161 flow [2023-11-19 07:36:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:36:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-19 07:36:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1372 transitions. [2023-11-19 07:36:57,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44186795491143316 [2023-11-19 07:36:57,633 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1372 transitions. [2023-11-19 07:36:57,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1372 transitions. [2023-11-19 07:36:57,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:57,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1372 transitions. [2023-11-19 07:36:57,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.46666666666667) internal successors, (1372), 15 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 207.0) internal successors, (3312), 16 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,647 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 207.0) internal successors, (3312), 16 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,647 INFO L175 Difference]: Start difference. First operand has 93 places, 180 transitions, 2690 flow. Second operand 15 states and 1372 transitions. [2023-11-19 07:36:57,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 330 transitions, 5161 flow [2023-11-19 07:36:57,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 330 transitions, 5078 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-11-19 07:36:57,907 INFO L231 Difference]: Finished difference. Result has 108 places, 242 transitions, 4203 flow [2023-11-19 07:36:57,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4203, PETRI_PLACES=108, PETRI_TRANSITIONS=242} [2023-11-19 07:36:57,908 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 73 predicate places. [2023-11-19 07:36:57,908 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 242 transitions, 4203 flow [2023-11-19 07:36:57,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:57,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:57,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:57,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:36:57,909 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:36:57,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2066649379, now seen corresponding path program 6 times [2023-11-19 07:36:57,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:57,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932134784] [2023-11-19 07:36:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:59,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:59,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932134784] [2023-11-19 07:36:59,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932134784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:59,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:59,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:59,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030136554] [2023-11-19 07:36:59,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:59,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:36:59,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:59,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:36:59,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:59,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 207 [2023-11-19 07:36:59,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 242 transitions, 4203 flow. Second operand has 9 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:59,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:59,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 207 [2023-11-19 07:36:59,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:37:01,932 INFO L124 PetriNetUnfolderBase]: 3357/5277 cut-off events. [2023-11-19 07:37:01,933 INFO L125 PetriNetUnfolderBase]: For 61474/61474 co-relation queries the response was YES. [2023-11-19 07:37:01,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38977 conditions, 5277 events. 3357/5277 cut-off events. For 61474/61474 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 30496 event pairs, 179 based on Foata normal form. 60/5337 useless extension candidates. Maximal degree in co-relation 38924. Up to 2264 conditions per place. [2023-11-19 07:37:02,007 INFO L140 encePairwiseOnDemand]: 195/207 looper letters, 175 selfloop transitions, 135 changer transitions 37/347 dead transitions. [2023-11-19 07:37:02,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 347 transitions, 6443 flow [2023-11-19 07:37:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:37:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:37:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 823 transitions. [2023-11-19 07:37:02,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44176060118089105 [2023-11-19 07:37:02,013 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 823 transitions. [2023-11-19 07:37:02,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 823 transitions. [2023-11-19 07:37:02,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:02,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 823 transitions. [2023-11-19 07:37:02,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.44444444444444) internal successors, (823), 9 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 207.0) internal successors, (2070), 10 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,023 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 207.0) internal successors, (2070), 10 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,023 INFO L175 Difference]: Start difference. First operand has 108 places, 242 transitions, 4203 flow. Second operand 9 states and 823 transitions. [2023-11-19 07:37:02,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 347 transitions, 6443 flow [2023-11-19 07:37:02,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 347 transitions, 6237 flow, removed 103 selfloop flow, removed 4 redundant places. [2023-11-19 07:37:02,381 INFO L231 Difference]: Finished difference. Result has 113 places, 269 transitions, 5161 flow [2023-11-19 07:37:02,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=4063, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5161, PETRI_PLACES=113, PETRI_TRANSITIONS=269} [2023-11-19 07:37:02,382 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 78 predicate places. [2023-11-19 07:37:02,382 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 269 transitions, 5161 flow [2023-11-19 07:37:02,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:02,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:37:02,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:02,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:37:02,383 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:37:02,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2000655581, now seen corresponding path program 7 times [2023-11-19 07:37:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:02,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298495166] [2023-11-19 07:37:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:02,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat