./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/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_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:45:38,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:45:38,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:45:38,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:45:38,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:45:38,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:45:38,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:45:38,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:45:38,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:45:38,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:45:38,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:45:38,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:45:38,754 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:45:38,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:45:38,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:45:38,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:45:38,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:45:38,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:45:38,758 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:45:38,758 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:45:38,759 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:45:38,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:45:38,761 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:45:38,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:45:38,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:45:38,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:45:38,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:45:38,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:45:38,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:45:38,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:38,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:45:38,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:45:38,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:45:38,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:45:38,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:45:38,769 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:45:38,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:45:38,770 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:45:38,771 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_35ebcdae-3bcb-43c7-9b00-f87884870d91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 [2023-11-19 07:45:39,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:45:39,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:45:39,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:45:39,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:45:39,087 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:45:39,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:45:42,193 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:45:42,493 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:45:42,494 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/sv-benchmarks/c/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:45:42,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/data/6318901dd/0baa2ec8033247459a36953811e8948e/FLAG99bacfe92 [2023-11-19 07:45:42,542 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/data/6318901dd/0baa2ec8033247459a36953811e8948e [2023-11-19 07:45:42,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:45:42,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:45:42,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:42,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:45:42,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:45:42,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:42" (1/1) ... [2023-11-19 07:45:42,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787290d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:42, skipping insertion in model container [2023-11-19 07:45:42,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:45:42" (1/1) ... [2023-11-19 07:45:42,619 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:45:43,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:43,025 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:45:43,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:45:43,184 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:43,184 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:45:43,192 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:45:43,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43 WrapperNode [2023-11-19 07:45:43,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:45:43,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:43,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:45:43,195 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:45:43,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,291 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-19 07:45:43,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:45:43,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:45:43,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:45:43,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:45:43,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:45:43,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:45:43,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:45:43,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:45:43,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (1/1) ... [2023-11-19 07:45:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:45:43,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:45:43,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:45:43,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35ebcdae-3bcb-43c7-9b00-f87884870d91/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:45:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:45:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:45:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:45:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:45:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:45:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:45:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:45:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:45:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:45:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:45:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:45:43,442 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:45:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:45:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:45:43,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:45:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:45:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:45:43,447 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 07:45:43,604 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:45:43,606 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:45:44,054 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:45:44,217 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:45:44,218 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:45:44,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:44 BoogieIcfgContainer [2023-11-19 07:45:44,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:45:44,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:45:44,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:45:44,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:45:44,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:45:42" (1/3) ... [2023-11-19 07:45:44,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d7f2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:44, skipping insertion in model container [2023-11-19 07:45:44,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:45:43" (2/3) ... [2023-11-19 07:45:44,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d7f2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:45:44, skipping insertion in model container [2023-11-19 07:45:44,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:45:44" (3/3) ... [2023-11-19 07:45:44,262 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_power.oepc_pso.oepc_rmo.oepc.i [2023-11-19 07:45:44,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:45:44,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:45:44,282 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:45:44,376 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:45:44,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 153 transitions, 322 flow [2023-11-19 07:45:44,517 INFO L124 PetriNetUnfolderBase]: 4/149 cut-off events. [2023-11-19 07:45:44,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:44,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 4/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 123 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:45:44,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 153 transitions, 322 flow [2023-11-19 07:45:44,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 149 transitions, 310 flow [2023-11-19 07:45:44,536 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:45:44,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 149 transitions, 310 flow [2023-11-19 07:45:44,550 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 149 transitions, 310 flow [2023-11-19 07:45:44,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 149 transitions, 310 flow [2023-11-19 07:45:44,593 INFO L124 PetriNetUnfolderBase]: 4/149 cut-off events. [2023-11-19 07:45:44,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:44,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 4/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 123 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:45:44,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 4418 [2023-11-19 07:45:50,910 INFO L134 LiptonReduction]: Checked pairs total: 12511 [2023-11-19 07:45:50,910 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-11-19 07:45:50,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:45:50,955 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@c0b5c5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:45:50,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:45:50,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:45:50,959 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:45:50,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:50,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:50,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:45:50,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:50,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash 662, now seen corresponding path program 1 times [2023-11-19 07:45:50,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:50,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567413220] [2023-11-19 07:45:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:50,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:51,138 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 07:45:51,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:51,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567413220] [2023-11-19 07:45:51,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567413220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:51,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:45:51,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174806543] [2023-11-19 07:45:51,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:51,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:45:51,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:45:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:45:51,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 302 [2023-11-19 07:45:51,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 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 07:45:51,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:51,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 302 [2023-11-19 07:45:51,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:53,288 INFO L124 PetriNetUnfolderBase]: 7479/10213 cut-off events. [2023-11-19 07:45:53,289 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-19 07:45:53,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20521 conditions, 10213 events. 7479/10213 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 54378 event pairs, 7479 based on Foata normal form. 0/8755 useless extension candidates. Maximal degree in co-relation 20509. Up to 10091 conditions per place. [2023-11-19 07:45:53,409 INFO L140 encePairwiseOnDemand]: 293/302 looper letters, 27 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-19 07:45:53,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 130 flow [2023-11-19 07:45:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:45:53,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:45:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 308 transitions. [2023-11-19 07:45:53,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5099337748344371 [2023-11-19 07:45:53,433 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 308 transitions. [2023-11-19 07:45:53,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 308 transitions. [2023-11-19 07:45:53,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:53,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 308 transitions. [2023-11-19 07:45:53,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 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 07:45:53,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 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 07:45:53,457 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 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 07:45:53,459 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 308 transitions. [2023-11-19 07:45:53,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 130 flow [2023-11-19 07:45:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:45:53,472 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-19 07:45:53,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-19 07:45:53,484 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-19 07:45:53,484 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-19 07:45:53,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 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 07:45:53,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:53,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:45:53,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:45:53,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:53,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash 652535, now seen corresponding path program 1 times [2023-11-19 07:45:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173229483] [2023-11-19 07:45:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:53,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:53,882 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 07:45:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173229483] [2023-11-19 07:45:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173229483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:53,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:53,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:45:53,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159649401] [2023-11-19 07:45:53,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:53,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:53,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:53,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:53,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 302 [2023-11-19 07:45:53,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 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 07:45:53,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:53,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 302 [2023-11-19 07:45:53,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:45:55,539 INFO L124 PetriNetUnfolderBase]: 5879/8515 cut-off events. [2023-11-19 07:45:55,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:45:55,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16656 conditions, 8515 events. 5879/8515 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 52494 event pairs, 1079 based on Foata normal form. 0/7847 useless extension candidates. Maximal degree in co-relation 16653. Up to 6367 conditions per place. [2023-11-19 07:45:55,643 INFO L140 encePairwiseOnDemand]: 299/302 looper letters, 43 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-11-19 07:45:55,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 212 flow [2023-11-19 07:45:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:45:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:45:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-11-19 07:45:55,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-19 07:45:55,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-11-19 07:45:55,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-11-19 07:45:55,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:45:55,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-11-19 07:45:55,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 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 07:45:55,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:55,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:45:55,658 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 453 transitions. [2023-11-19 07:45:55,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 212 flow [2023-11-19 07:45:55,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:45:55,661 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-19 07:45:55,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-19 07:45:55,664 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-19 07:45:55,664 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-19 07:45:55,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 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 07:45:55,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:45:55,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:45:55,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:45:55,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:45:55,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:45:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash 330081961, now seen corresponding path program 1 times [2023-11-19 07:45:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:45:55,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972727154] [2023-11-19 07:45:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:45:55,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:45:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:45:56,222 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 07:45:56,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:45:56,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972727154] [2023-11-19 07:45:56,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972727154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:45:56,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:45:56,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:45:56,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62238564] [2023-11-19 07:45:56,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:45:56,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:45:56,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:45:56,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:45:56,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:45:56,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 302 [2023-11-19 07:45:56,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:45:56,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:45:56,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 302 [2023-11-19 07:45:56,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:01,252 INFO L124 PetriNetUnfolderBase]: 25671/34572 cut-off events. [2023-11-19 07:46:01,253 INFO L125 PetriNetUnfolderBase]: For 1593/1593 co-relation queries the response was YES. [2023-11-19 07:46:01,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71355 conditions, 34572 events. 25671/34572 cut-off events. For 1593/1593 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 187844 event pairs, 9042 based on Foata normal form. 0/33697 useless extension candidates. Maximal degree in co-relation 71351. Up to 20058 conditions per place. [2023-11-19 07:46:01,578 INFO L140 encePairwiseOnDemand]: 291/302 looper letters, 45 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2023-11-19 07:46:01,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 238 flow [2023-11-19 07:46:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-11-19 07:46:01,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46909492273730685 [2023-11-19 07:46:01,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-11-19 07:46:01,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-11-19 07:46:01,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:01,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-11-19 07:46:01,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 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 07:46:01,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 302.0) internal successors, (1208), 4 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:01,590 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 425 transitions. [2023-11-19 07:46:01,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 238 flow [2023-11-19 07:46:01,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:01,595 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 146 flow [2023-11-19 07:46:01,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-19 07:46:01,597 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-19 07:46:01,597 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 146 flow [2023-11-19 07:46:01,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 07:46:01,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:01,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:01,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:46:01,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:01,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash 330081987, now seen corresponding path program 1 times [2023-11-19 07:46:01,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159226692] [2023-11-19 07:46:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:01,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:02,572 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 07:46:02,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:02,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159226692] [2023-11-19 07:46:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159226692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:02,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:02,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:02,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071849942] [2023-11-19 07:46:02,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:02,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:02,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:02,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:02,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:02,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 302 [2023-11-19 07:46:02,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 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 07:46:02,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:02,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 302 [2023-11-19 07:46:02,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:05,871 INFO L124 PetriNetUnfolderBase]: 14027/20192 cut-off events. [2023-11-19 07:46:05,871 INFO L125 PetriNetUnfolderBase]: For 8855/9607 co-relation queries the response was YES. [2023-11-19 07:46:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48059 conditions, 20192 events. 14027/20192 cut-off events. For 8855/9607 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 127133 event pairs, 4064 based on Foata normal form. 1755/21023 useless extension candidates. Maximal degree in co-relation 48054. Up to 17408 conditions per place. [2023-11-19 07:46:06,029 INFO L140 encePairwiseOnDemand]: 297/302 looper letters, 41 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-11-19 07:46:06,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 270 flow [2023-11-19 07:46:06,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 745 transitions. [2023-11-19 07:46:06,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41114790286975716 [2023-11-19 07:46:06,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 745 transitions. [2023-11-19 07:46:06,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 745 transitions. [2023-11-19 07:46:06,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:06,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 745 transitions. [2023-11-19 07:46:06,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 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 07:46:06,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 0 states have call successors, (0), 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 07:46:06,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 302.0) internal successors, (2114), 7 states have internal predecessors, (2114), 0 states have call successors, (0), 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 07:46:06,045 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 146 flow. Second operand 6 states and 745 transitions. [2023-11-19 07:46:06,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 270 flow [2023-11-19 07:46:06,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:06,108 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 126 flow [2023-11-19 07:46:06,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-11-19 07:46:06,110 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2023-11-19 07:46:06,110 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 126 flow [2023-11-19 07:46:06,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 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 07:46:06,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:06,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:06,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:46:06,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:06,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash -132588526, now seen corresponding path program 1 times [2023-11-19 07:46:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580408161] [2023-11-19 07:46:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:06,331 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 07:46:06,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:06,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580408161] [2023-11-19 07:46:06,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580408161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:06,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:06,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:06,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91238358] [2023-11-19 07:46:06,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:06,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:06,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 302 [2023-11-19 07:46:06,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 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 07:46:06,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:06,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 302 [2023-11-19 07:46:06,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:09,381 INFO L124 PetriNetUnfolderBase]: 18540/25160 cut-off events. [2023-11-19 07:46:09,381 INFO L125 PetriNetUnfolderBase]: For 5448/5448 co-relation queries the response was YES. [2023-11-19 07:46:09,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60078 conditions, 25160 events. 18540/25160 cut-off events. For 5448/5448 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 130215 event pairs, 4807 based on Foata normal form. 275/25435 useless extension candidates. Maximal degree in co-relation 60073. Up to 10821 conditions per place. [2023-11-19 07:46:09,515 INFO L140 encePairwiseOnDemand]: 293/302 looper letters, 60 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2023-11-19 07:46:09,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 348 flow [2023-11-19 07:46:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 555 transitions. [2023-11-19 07:46:09,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594370860927152 [2023-11-19 07:46:09,524 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 555 transitions. [2023-11-19 07:46:09,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 555 transitions. [2023-11-19 07:46:09,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:09,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 555 transitions. [2023-11-19 07:46:09,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 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 07:46:09,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 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 07:46:09,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 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 07:46:09,537 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 126 flow. Second operand 4 states and 555 transitions. [2023-11-19 07:46:09,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 348 flow [2023-11-19 07:46:09,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 69 transitions, 341 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:46:09,542 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 187 flow [2023-11-19 07:46:09,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-19 07:46:09,545 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-19 07:46:09,545 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 187 flow [2023-11-19 07:46:09,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 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 07:46:09,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:09,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:09,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:46:09,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:09,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -620213774, now seen corresponding path program 1 times [2023-11-19 07:46:09,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548097744] [2023-11-19 07:46:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:09,757 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 07:46:09,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:09,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548097744] [2023-11-19 07:46:09,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548097744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:09,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:09,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989974306] [2023-11-19 07:46:09,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:09,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:09,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:09,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:09,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 302 [2023-11-19 07:46:09,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 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 07:46:09,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:09,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 302 [2023-11-19 07:46:09,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:12,614 INFO L124 PetriNetUnfolderBase]: 18282/24814 cut-off events. [2023-11-19 07:46:12,615 INFO L125 PetriNetUnfolderBase]: For 16394/16394 co-relation queries the response was YES. [2023-11-19 07:46:12,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67107 conditions, 24814 events. 18282/24814 cut-off events. For 16394/16394 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 131749 event pairs, 3548 based on Foata normal form. 40/24854 useless extension candidates. Maximal degree in co-relation 67100. Up to 14552 conditions per place. [2023-11-19 07:46:12,777 INFO L140 encePairwiseOnDemand]: 292/302 looper letters, 66 selfloop transitions, 20 changer transitions 0/86 dead transitions. [2023-11-19 07:46:12,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 517 flow [2023-11-19 07:46:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-11-19 07:46:12,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685430463576159 [2023-11-19 07:46:12,781 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-11-19 07:46:12,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-11-19 07:46:12,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:12,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-11-19 07:46:12,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 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 07:46:12,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 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 07:46:12,789 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 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 07:46:12,789 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 187 flow. Second operand 4 states and 566 transitions. [2023-11-19 07:46:12,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 517 flow [2023-11-19 07:46:12,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 86 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:12,943 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 349 flow [2023-11-19 07:46:12,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2023-11-19 07:46:12,944 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-11-19 07:46:12,944 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 349 flow [2023-11-19 07:46:12,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 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 07:46:12,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:12,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:12,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:46:12,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:12,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2004624451, now seen corresponding path program 1 times [2023-11-19 07:46:12,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:12,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447282655] [2023-11-19 07:46:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:12,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:13,161 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 07:46:13,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:13,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447282655] [2023-11-19 07:46:13,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447282655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:13,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:13,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505225916] [2023-11-19 07:46:13,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:13,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:13,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:13,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:13,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 302 [2023-11-19 07:46:13,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 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 07:46:13,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:13,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 302 [2023-11-19 07:46:13,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:16,073 INFO L124 PetriNetUnfolderBase]: 17488/23740 cut-off events. [2023-11-19 07:46:16,074 INFO L125 PetriNetUnfolderBase]: For 43061/43061 co-relation queries the response was YES. [2023-11-19 07:46:16,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73010 conditions, 23740 events. 17488/23740 cut-off events. For 43061/43061 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 126012 event pairs, 3340 based on Foata normal form. 160/23900 useless extension candidates. Maximal degree in co-relation 73000. Up to 10661 conditions per place. [2023-11-19 07:46:16,250 INFO L140 encePairwiseOnDemand]: 293/302 looper letters, 82 selfloop transitions, 13 changer transitions 0/95 dead transitions. [2023-11-19 07:46:16,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 95 transitions, 709 flow [2023-11-19 07:46:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 563 transitions. [2023-11-19 07:46:16,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46605960264900664 [2023-11-19 07:46:16,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 563 transitions. [2023-11-19 07:46:16,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 563 transitions. [2023-11-19 07:46:16,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:16,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 563 transitions. [2023-11-19 07:46:16,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 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 07:46:16,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 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 07:46:16,265 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 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 07:46:16,266 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 349 flow. Second operand 4 states and 563 transitions. [2023-11-19 07:46:16,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 95 transitions, 709 flow [2023-11-19 07:46:16,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 95 transitions, 709 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:46:16,542 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 492 flow [2023-11-19 07:46:16,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=492, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-11-19 07:46:16,543 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-11-19 07:46:16,544 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 492 flow [2023-11-19 07:46:16,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 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 07:46:16,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:16,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:16,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:46:16,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:16,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:16,546 INFO L85 PathProgramCache]: Analyzing trace with hash 857481864, now seen corresponding path program 1 times [2023-11-19 07:46:16,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397448696] [2023-11-19 07:46:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:16,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:16,811 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 07:46:16,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397448696] [2023-11-19 07:46:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397448696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:16,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:16,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:16,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743437523] [2023-11-19 07:46:16,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:16,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:16,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 302 [2023-11-19 07:46:16,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:16,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:16,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 302 [2023-11-19 07:46:16,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:19,597 INFO L124 PetriNetUnfolderBase]: 10392/15555 cut-off events. [2023-11-19 07:46:19,597 INFO L125 PetriNetUnfolderBase]: For 29539/31806 co-relation queries the response was YES. [2023-11-19 07:46:19,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44604 conditions, 15555 events. 10392/15555 cut-off events. For 29539/31806 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 102158 event pairs, 1742 based on Foata normal form. 1475/16527 useless extension candidates. Maximal degree in co-relation 44591. Up to 9197 conditions per place. [2023-11-19 07:46:19,728 INFO L140 encePairwiseOnDemand]: 295/302 looper letters, 104 selfloop transitions, 10 changer transitions 0/139 dead transitions. [2023-11-19 07:46:19,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 139 transitions, 1203 flow [2023-11-19 07:46:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:46:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 717 transitions. [2023-11-19 07:46:19,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47483443708609274 [2023-11-19 07:46:19,732 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 717 transitions. [2023-11-19 07:46:19,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 717 transitions. [2023-11-19 07:46:19,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:19,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 717 transitions. [2023-11-19 07:46:19,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 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 07:46:19,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 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 07:46:19,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 302.0) internal successors, (1812), 6 states have internal predecessors, (1812), 0 states have call successors, (0), 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 07:46:19,741 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 492 flow. Second operand 5 states and 717 transitions. [2023-11-19 07:46:19,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 139 transitions, 1203 flow [2023-11-19 07:46:19,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 139 transitions, 1199 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:19,798 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 563 flow [2023-11-19 07:46:19,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2023-11-19 07:46:19,799 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-11-19 07:46:19,799 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 563 flow [2023-11-19 07:46:19,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:19,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:19,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:19,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:46:19,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:19,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash -947437729, now seen corresponding path program 1 times [2023-11-19 07:46:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146650385] [2023-11-19 07:46:19,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:20,070 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 07:46:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146650385] [2023-11-19 07:46:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146650385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:20,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250261561] [2023-11-19 07:46:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:20,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 302 [2023-11-19 07:46:20,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 563 flow. Second operand has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:20,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:20,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 302 [2023-11-19 07:46:20,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:22,383 INFO L124 PetriNetUnfolderBase]: 8488/13070 cut-off events. [2023-11-19 07:46:22,383 INFO L125 PetriNetUnfolderBase]: For 29420/31074 co-relation queries the response was YES. [2023-11-19 07:46:22,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46077 conditions, 13070 events. 8488/13070 cut-off events. For 29420/31074 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 87561 event pairs, 998 based on Foata normal form. 999/13626 useless extension candidates. Maximal degree in co-relation 46060. Up to 3873 conditions per place. [2023-11-19 07:46:22,520 INFO L140 encePairwiseOnDemand]: 295/302 looper letters, 142 selfloop transitions, 19 changer transitions 0/186 dead transitions. [2023-11-19 07:46:22,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 186 transitions, 1671 flow [2023-11-19 07:46:22,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:46:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:46:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1006 transitions. [2023-11-19 07:46:22,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47587511825922424 [2023-11-19 07:46:22,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1006 transitions. [2023-11-19 07:46:22,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1006 transitions. [2023-11-19 07:46:22,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:22,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1006 transitions. [2023-11-19 07:46:22,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 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 07:46:22,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 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 07:46:22,539 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 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 07:46:22,539 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 563 flow. Second operand 7 states and 1006 transitions. [2023-11-19 07:46:22,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 186 transitions, 1671 flow [2023-11-19 07:46:22,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 186 transitions, 1666 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:22,636 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 692 flow [2023-11-19 07:46:22,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=692, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2023-11-19 07:46:22,638 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-11-19 07:46:22,638 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 692 flow [2023-11-19 07:46:22,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.2) internal successors, (661), 5 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:22,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:22,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:22,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:46:22,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:22,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:22,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1954324963, now seen corresponding path program 1 times [2023-11-19 07:46:22,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:22,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404213324] [2023-11-19 07:46:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:22,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:22,977 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 07:46:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404213324] [2023-11-19 07:46:22,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404213324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:22,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128892724] [2023-11-19 07:46:22,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:22,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:23,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 302 [2023-11-19 07:46:23,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 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 07:46:23,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:23,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 302 [2023-11-19 07:46:23,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:25,372 INFO L124 PetriNetUnfolderBase]: 7915/12176 cut-off events. [2023-11-19 07:46:25,372 INFO L125 PetriNetUnfolderBase]: For 35078/36659 co-relation queries the response was YES. [2023-11-19 07:46:25,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48497 conditions, 12176 events. 7915/12176 cut-off events. For 35078/36659 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 81764 event pairs, 857 based on Foata normal form. 459/12219 useless extension candidates. Maximal degree in co-relation 48477. Up to 3711 conditions per place. [2023-11-19 07:46:25,489 INFO L140 encePairwiseOnDemand]: 295/302 looper letters, 156 selfloop transitions, 28 changer transitions 12/221 dead transitions. [2023-11-19 07:46:25,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 221 transitions, 2059 flow [2023-11-19 07:46:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:46:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:46:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1293 transitions. [2023-11-19 07:46:25,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757174392935982 [2023-11-19 07:46:25,495 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1293 transitions. [2023-11-19 07:46:25,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1293 transitions. [2023-11-19 07:46:25,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:25,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1293 transitions. [2023-11-19 07:46:25,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.66666666666666) internal successors, (1293), 9 states have internal predecessors, (1293), 0 states have call successors, (0), 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 07:46:25,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 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 07:46:25,507 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 302.0) internal successors, (3020), 10 states have internal predecessors, (3020), 0 states have call successors, (0), 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 07:46:25,507 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 692 flow. Second operand 9 states and 1293 transitions. [2023-11-19 07:46:25,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 221 transitions, 2059 flow [2023-11-19 07:46:26,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 221 transitions, 2009 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:26,525 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 820 flow [2023-11-19 07:46:26,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=302, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=820, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2023-11-19 07:46:26,526 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2023-11-19 07:46:26,526 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 820 flow [2023-11-19 07:46:26,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 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 07:46:26,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:26,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:26,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:46:26,528 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:46:26,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -641042917, now seen corresponding path program 1 times [2023-11-19 07:46:26,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:26,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125845520] [2023-11-19 07:46:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:26,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:27,414 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 07:46:27,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:27,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125845520] [2023-11-19 07:46:27,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125845520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:27,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:27,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:27,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821057552] [2023-11-19 07:46:27,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:27,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:27,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:27,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 302 [2023-11-19 07:46:27,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 820 flow. Second operand has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 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 07:46:27,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:27,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 302 [2023-11-19 07:46:27,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand